NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 00:38:40,610 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 00:38:40,612 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 00:38:40,623 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 00:38:40,623 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 00:38:40,624 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 00:38:40,625 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 00:38:40,627 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 00:38:40,629 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 00:38:40,629 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 00:38:40,630 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 00:38:40,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 00:38:40,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 00:38:40,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 00:38:40,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 00:38:40,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 00:38:40,635 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 00:38:40,636 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 00:38:40,638 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 00:38:40,640 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 00:38:40,641 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 00:38:40,642 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 00:38:40,644 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 00:38:40,644 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 00:38:40,644 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 00:38:40,645 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 00:38:40,646 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 00:38:40,647 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 00:38:40,647 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 00:38:40,648 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 00:38:40,648 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 00:38:40,649 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 00:38:40,650 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 00:38:40,650 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 00:38:40,651 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 00:38:40,651 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 00:38:40,651 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 00:38:40,652 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 00:38:40,652 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 00:38:40,653 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 00:38:40,667 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 00:38:40,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 00:38:40,668 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 00:38:40,669 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 00:38:40,669 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 00:38:40,669 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 00:38:40,669 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 00:38:40,669 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 00:38:40,670 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 00:38:40,670 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 00:38:40,670 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 00:38:40,670 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 00:38:40,670 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 00:38:40,670 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 00:38:40,671 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:38:40,671 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 00:38:40,671 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 00:38:40,671 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 00:38:40,671 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 00:38:40,672 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 00:38:40,672 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 00:38:40,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 00:38:40,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 00:38:40,672 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 00:38:40,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 00:38:40,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 00:38:40,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 00:38:40,673 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 00:38:40,673 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 00:38:40,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 00:38:40,712 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 00:38:40,716 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 00:38:40,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 00:38:40,717 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 00:38:40,718 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 00:38:40,788 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/e77a32bfbdc94b419621588e478253ad/FLAG2e7a74ef0 [2020-06-22 00:38:41,142 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 00:38:41,143 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 00:38:41,150 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/e77a32bfbdc94b419621588e478253ad/FLAG2e7a74ef0 [2020-06-22 00:38:41,534 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/e77a32bfbdc94b419621588e478253ad [2020-06-22 00:38:41,546 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 00:38:41,548 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 00:38:41,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 00:38:41,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 00:38:41,553 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 00:38:41,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184a156b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41, skipping insertion in model container [2020-06-22 00:38:41,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 00:38:41,587 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 00:38:41,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 00:38:41,762 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 00:38:41,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 00:38:41,859 INFO L195 MainTranslator]: Completed translation [2020-06-22 00:38:41,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41 WrapperNode [2020-06-22 00:38:41,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 00:38:41,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 00:38:41,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 00:38:41,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 00:38:41,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 00:38:41,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 00:38:41,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 00:38:41,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 00:38:41,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... [2020-06-22 00:38:41,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 00:38:41,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 00:38:41,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 00:38:41,923 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 00:38:41,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 00:38:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 00:38:41,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 00:38:42,199 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 00:38:42,200 INFO L286 CfgBuilder]: Removed 35 assue(true) statements. [2020-06-22 00:38:42,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:38:42 BoogieIcfgContainer [2020-06-22 00:38:42,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 00:38:42,202 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 00:38:42,202 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 00:38:42,204 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 00:38:42,205 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:38:42" (1/1) ... [2020-06-22 00:38:42,222 INFO L313 BlockEncoder]: Initial Icfg 38 locations, 55 edges [2020-06-22 00:38:42,224 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 00:38:42,224 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 00:38:42,225 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 00:38:42,225 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 00:38:42,227 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 00:38:42,228 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 00:38:42,228 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 00:38:42,258 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 00:38:42,293 INFO L200 BlockEncoder]: SBE split 15 edges [2020-06-22 00:38:42,298 INFO L70 emoveInfeasibleEdges]: Removed 6 edges and 0 locations because of local infeasibility [2020-06-22 00:38:42,300 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:38:42,330 INFO L100 BaseMinimizeStates]: Removed 22 edges and 11 locations by large block encoding [2020-06-22 00:38:42,333 INFO L70 RemoveSinkStates]: Removed 12 edges and 7 locations by removing sink states [2020-06-22 00:38:42,335 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 00:38:42,335 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:38:42,340 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 00:38:42,341 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 00:38:42,341 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 00:38:42,342 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:38:42,345 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 00:38:42,345 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 00:38:42,346 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 00:38:42,346 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:38:42,346 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 00:38:42,347 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 00:38:42,347 INFO L313 BlockEncoder]: Encoded RCFG 16 locations, 43 edges [2020-06-22 00:38:42,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:38:42 BasicIcfg [2020-06-22 00:38:42,348 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 00:38:42,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 00:38:42,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 00:38:42,353 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 00:38:42,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 12:38:41" (1/4) ... [2020-06-22 00:38:42,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3909193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (2/4) ... [2020-06-22 00:38:42,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3909193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:38:42" (3/4) ... [2020-06-22 00:38:42,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3909193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:38:42" (4/4) ... [2020-06-22 00:38:42,357 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 00:38:42,367 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 00:38:42,375 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 00:38:42,392 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 00:38:42,420 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 00:38:42,421 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 00:38:42,421 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 00:38:42,421 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 00:38:42,421 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 00:38:42,422 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 00:38:42,422 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 00:38:42,422 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 00:38:42,422 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 00:38:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-06-22 00:38:42,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 00:38:42,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-06-22 00:38:42,502 INFO L451 ceAbstractionStarter]: At program point L97(lines 97 100) the Hoare annotation is: true [2020-06-22 00:38:42,503 INFO L451 ceAbstractionStarter]: At program point L62(lines 55 64) the Hoare annotation is: true [2020-06-22 00:38:42,503 INFO L451 ceAbstractionStarter]: At program point L89(lines 89 92) the Hoare annotation is: true [2020-06-22 00:38:42,503 INFO L448 ceAbstractionStarter]: For program point L81(lines 81 84) no Hoare annotation was computed. [2020-06-22 00:38:42,503 INFO L448 ceAbstractionStarter]: For program point L112(line 112) no Hoare annotation was computed. [2020-06-22 00:38:42,503 INFO L448 ceAbstractionStarter]: For program point L104(line 104) no Hoare annotation was computed. [2020-06-22 00:38:42,504 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 43) no Hoare annotation was computed. [2020-06-22 00:38:42,504 INFO L448 ceAbstractionStarter]: For program point L96(line 96) no Hoare annotation was computed. [2020-06-22 00:38:42,504 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-06-22 00:38:42,504 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 63) no Hoare annotation was computed. [2020-06-22 00:38:42,504 INFO L448 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2020-06-22 00:38:42,505 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2020-06-22 00:38:42,505 INFO L451 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2020-06-22 00:38:42,505 INFO L451 ceAbstractionStarter]: At program point L78(lines 78 113) the Hoare annotation is: true [2020-06-22 00:38:42,505 INFO L451 ceAbstractionStarter]: At program point L76-2(lines 76 114) the Hoare annotation is: true [2020-06-22 00:38:42,505 INFO L448 ceAbstractionStarter]: For program point L105(lines 105 108) no Hoare annotation was computed. [2020-06-22 00:38:42,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:38:42 BasicIcfg [2020-06-22 00:38:42,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 00:38:42,515 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 00:38:42,515 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 00:38:42,519 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 00:38:42,519 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:38:42,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 12:38:41" (1/5) ... [2020-06-22 00:38:42,520 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4136379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,520 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:38:42,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:38:41" (2/5) ... [2020-06-22 00:38:42,521 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4136379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,521 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:38:42,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:38:42" (3/5) ... [2020-06-22 00:38:42,521 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4136379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,522 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:38:42,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:38:42" (4/5) ... [2020-06-22 00:38:42,522 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4136379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:38:42, skipping insertion in model container [2020-06-22 00:38:42,522 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:38:42,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:38:42" (5/5) ... [2020-06-22 00:38:42,524 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 00:38:42,550 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 00:38:42,550 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 00:38:42,551 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 00:38:42,551 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 00:38:42,551 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 00:38:42,551 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 00:38:42,551 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 00:38:42,551 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 00:38:42,551 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 00:38:42,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-06-22 00:38:42,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-06-22 00:38:42,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:42,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:42,581 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:42,581 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-22 00:38:42,581 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 00:38:42,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-06-22 00:38:42,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-06-22 00:38:42,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:42,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:42,584 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:42,584 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-22 00:38:42,589 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue [252] ULTIMATE.startENTRY-->L76-2: Formula: (and (= 0 v_~open_called~0_9) (= v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20 0) (= |v_ULTIMATE.start_my_init_#res_5| 0) (= v_~ldv_mutex~0_17 1)) InVars {} OutVars{ULTIMATE.start_main_#t~post10=|v_ULTIMATE.start_main_#t~post10_5|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_8|, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_5|, ULTIMATE.start_main_#t~ret1=|v_ULTIMATE.start_main_#t~ret1_5|, ~open_called~0=v_~open_called~0_9, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_5|, ULTIMATE.start_my_init_#res=|v_ULTIMATE.start_my_init_#res_5|, ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_19|, ULTIMATE.start_main_#t~ret11=|v_ULTIMATE.start_main_#t~ret11_5|, ULTIMATE.start_main_#t~ret9=|v_ULTIMATE.start_main_#t~ret9_5|, ~ldv_mutex~0=v_~ldv_mutex~0_17, ULTIMATE.start_main_#t~ret7=|v_ULTIMATE.start_main_#t~ret7_5|, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post10, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~ret1, ~open_called~0, ULTIMATE.start_main_#t~post8, ULTIMATE.start_my_init_#res, ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~ret11, ULTIMATE.start_main_#t~ret9, ~ldv_mutex~0, ULTIMATE.start_main_#t~ret7, ULTIMATE.start_main_#t~ret5] 10#L76-2true [2020-06-22 00:38:42,590 INFO L796 eck$LassoCheckResult]: Loop: 10#L76-2true [214] L76-2-->L80: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= 0 |v_ULTIMATE.start_main_#t~nondet3_3|) |v_ULTIMATE.start_main_#t~switch4_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_3|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet2] 3#L80true [144] L80-->L81: Formula: |v_ULTIMATE.start_main_#t~switch4_4| InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_4|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_4|} AuxVars[] AssignedVars[] 6#L81true [225] L81-->L78: Formula: (> 0 v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_7) InVars {ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_7} OutVars{ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_7} AuxVars[] AssignedVars[] 16#L78true [168] L78-->L76-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet3] 10#L76-2true [2020-06-22 00:38:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:42,595 INFO L82 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 1 times [2020-06-22 00:38:42,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:42,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:42,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:42,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash 7444322, now seen corresponding path program 1 times [2020-06-22 00:38:42,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:42,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:42,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:42,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 267877244, now seen corresponding path program 1 times [2020-06-22 00:38:42,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:42,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:42,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:42,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:38:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:38:42,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 00:38:42,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 00:38:42,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 00:38:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 00:38:42,797 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-06-22 00:38:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 00:38:42,861 INFO L93 Difference]: Finished difference Result 16 states and 42 transitions. [2020-06-22 00:38:42,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 00:38:42,865 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 42 transitions. [2020-06-22 00:38:42,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-06-22 00:38:42,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 42 transitions. [2020-06-22 00:38:42,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-06-22 00:38:42,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-06-22 00:38:42,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 42 transitions. [2020-06-22 00:38:42,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:38:42,874 INFO L706 BuchiCegarLoop]: Abstraction has 16 states and 42 transitions. [2020-06-22 00:38:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 42 transitions. [2020-06-22 00:38:42,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-06-22 00:38:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-06-22 00:38:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 42 transitions. [2020-06-22 00:38:42,905 INFO L729 BuchiCegarLoop]: Abstraction has 16 states and 42 transitions. [2020-06-22 00:38:42,905 INFO L609 BuchiCegarLoop]: Abstraction has 16 states and 42 transitions. [2020-06-22 00:38:42,905 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 00:38:42,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 42 transitions. [2020-06-22 00:38:42,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-06-22 00:38:42,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:42,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:42,907 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:42,907 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-22 00:38:42,908 INFO L794 eck$LassoCheckResult]: Stem: 57#ULTIMATE.startENTRY [252] ULTIMATE.startENTRY-->L76-2: Formula: (and (= 0 v_~open_called~0_9) (= v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20 0) (= |v_ULTIMATE.start_my_init_#res_5| 0) (= v_~ldv_mutex~0_17 1)) InVars {} OutVars{ULTIMATE.start_main_#t~post10=|v_ULTIMATE.start_main_#t~post10_5|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_8|, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_5|, ULTIMATE.start_main_#t~ret1=|v_ULTIMATE.start_main_#t~ret1_5|, ~open_called~0=v_~open_called~0_9, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_5|, ULTIMATE.start_my_init_#res=|v_ULTIMATE.start_my_init_#res_5|, ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_19|, ULTIMATE.start_main_#t~ret11=|v_ULTIMATE.start_main_#t~ret11_5|, ULTIMATE.start_main_#t~ret9=|v_ULTIMATE.start_main_#t~ret9_5|, ~ldv_mutex~0=v_~ldv_mutex~0_17, ULTIMATE.start_main_#t~ret7=|v_ULTIMATE.start_main_#t~ret7_5|, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post10, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~ret1, ~open_called~0, ULTIMATE.start_main_#t~post8, ULTIMATE.start_my_init_#res, ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~ret11, ULTIMATE.start_main_#t~ret9, ~ldv_mutex~0, ULTIMATE.start_main_#t~ret7, ULTIMATE.start_main_#t~ret5] 54#L76-2 [2020-06-22 00:38:42,908 INFO L796 eck$LassoCheckResult]: Loop: 54#L76-2 [214] L76-2-->L80: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= 0 |v_ULTIMATE.start_main_#t~nondet3_3|) |v_ULTIMATE.start_main_#t~switch4_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_3|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet2] 46#L80 [144] L80-->L81: Formula: |v_ULTIMATE.start_main_#t~switch4_4| InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_4|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_4|} AuxVars[] AssignedVars[] 47#L81 [226] L81-->L78: Formula: (< 0 v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_7) InVars {ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_7} OutVars{ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_7} AuxVars[] AssignedVars[] 44#L78 [168] L78-->L76-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet3] 54#L76-2 [2020-06-22 00:38:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 2 times [2020-06-22 00:38:42,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:42,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:42,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:42,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 7444353, now seen corresponding path program 1 times [2020-06-22 00:38:42,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:42,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:42,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:38:42,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:42,923 INFO L82 PathProgramCache]: Analyzing trace with hash 267877275, now seen corresponding path program 1 times [2020-06-22 00:38:42,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:42,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:42,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:42,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:38:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:38:42,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 00:38:42,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 00:38:42,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 00:38:42,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 00:38:42,964 INFO L87 Difference]: Start difference. First operand 16 states and 42 transitions. cyclomatic complexity: 27 Second operand 3 states. [2020-06-22 00:38:43,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 00:38:43,084 INFO L93 Difference]: Finished difference Result 27 states and 69 transitions. [2020-06-22 00:38:43,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 00:38:43,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 69 transitions. [2020-06-22 00:38:43,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-06-22 00:38:43,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 69 transitions. [2020-06-22 00:38:43,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-06-22 00:38:43,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-06-22 00:38:43,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 69 transitions. [2020-06-22 00:38:43,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:38:43,090 INFO L706 BuchiCegarLoop]: Abstraction has 27 states and 69 transitions. [2020-06-22 00:38:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 69 transitions. [2020-06-22 00:38:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-06-22 00:38:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-06-22 00:38:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 69 transitions. [2020-06-22 00:38:43,094 INFO L729 BuchiCegarLoop]: Abstraction has 27 states and 69 transitions. [2020-06-22 00:38:43,094 INFO L609 BuchiCegarLoop]: Abstraction has 27 states and 69 transitions. [2020-06-22 00:38:43,094 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 00:38:43,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 69 transitions. [2020-06-22 00:38:43,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-06-22 00:38:43,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:43,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:43,096 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:43,096 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-06-22 00:38:43,096 INFO L794 eck$LassoCheckResult]: Stem: 106#ULTIMATE.startENTRY [252] ULTIMATE.startENTRY-->L76-2: Formula: (and (= 0 v_~open_called~0_9) (= v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20 0) (= |v_ULTIMATE.start_my_init_#res_5| 0) (= v_~ldv_mutex~0_17 1)) InVars {} OutVars{ULTIMATE.start_main_#t~post10=|v_ULTIMATE.start_main_#t~post10_5|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_8|, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_5|, ULTIMATE.start_main_#t~ret1=|v_ULTIMATE.start_main_#t~ret1_5|, ~open_called~0=v_~open_called~0_9, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_5|, ULTIMATE.start_my_init_#res=|v_ULTIMATE.start_my_init_#res_5|, ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_19|, ULTIMATE.start_main_#t~ret11=|v_ULTIMATE.start_main_#t~ret11_5|, ULTIMATE.start_main_#t~ret9=|v_ULTIMATE.start_main_#t~ret9_5|, ~ldv_mutex~0=v_~ldv_mutex~0_17, ULTIMATE.start_main_#t~ret7=|v_ULTIMATE.start_main_#t~ret7_5|, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post10, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~ret1, ~open_called~0, ULTIMATE.start_main_#t~post8, ULTIMATE.start_my_init_#res, ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~ret11, ULTIMATE.start_main_#t~ret9, ~ldv_mutex~0, ULTIMATE.start_main_#t~ret7, ULTIMATE.start_main_#t~ret5] 105#L76-2 [2020-06-22 00:38:43,097 INFO L796 eck$LassoCheckResult]: Loop: 105#L76-2 [214] L76-2-->L80: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= 0 |v_ULTIMATE.start_main_#t~nondet3_3|) |v_ULTIMATE.start_main_#t~switch4_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_3|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet2] 94#L80 [224] L80-->L88: Formula: (and (not |v_ULTIMATE.start_main_#t~switch4_6|) |v_ULTIMATE.start_main_#t~switch4_5| (= 1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4] 96#L88 [193] L88-->L89: Formula: |v_ULTIMATE.start_main_#t~switch4_7| InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} AuxVars[] AssignedVars[] 110#L89 [233] L89-->L78: Formula: (< v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11 1) InVars {ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} OutVars{ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} AuxVars[] AssignedVars[] 98#L78 [168] L78-->L76-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet3] 105#L76-2 [2020-06-22 00:38:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 3 times [2020-06-22 00:38:43,097 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:43,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash 233128693, now seen corresponding path program 1 times [2020-06-22 00:38:43,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:38:43,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:38:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:38:43,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 00:38:43,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 00:38:43,115 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 00:38:43,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 00:38:43,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 00:38:43,116 INFO L87 Difference]: Start difference. First operand 27 states and 69 transitions. cyclomatic complexity: 43 Second operand 3 states. [2020-06-22 00:38:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 00:38:43,191 INFO L93 Difference]: Finished difference Result 51 states and 113 transitions. [2020-06-22 00:38:43,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 00:38:43,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 113 transitions. [2020-06-22 00:38:43,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2020-06-22 00:38:43,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 51 states and 113 transitions. [2020-06-22 00:38:43,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2020-06-22 00:38:43,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2020-06-22 00:38:43,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 113 transitions. [2020-06-22 00:38:43,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:38:43,197 INFO L706 BuchiCegarLoop]: Abstraction has 51 states and 113 transitions. [2020-06-22 00:38:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 113 transitions. [2020-06-22 00:38:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-06-22 00:38:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-06-22 00:38:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 81 transitions. [2020-06-22 00:38:43,202 INFO L729 BuchiCegarLoop]: Abstraction has 33 states and 81 transitions. [2020-06-22 00:38:43,202 INFO L609 BuchiCegarLoop]: Abstraction has 33 states and 81 transitions. [2020-06-22 00:38:43,202 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 00:38:43,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 81 transitions. [2020-06-22 00:38:43,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2020-06-22 00:38:43,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:43,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:43,204 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:43,204 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-06-22 00:38:43,205 INFO L794 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY [252] ULTIMATE.startENTRY-->L76-2: Formula: (and (= 0 v_~open_called~0_9) (= v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20 0) (= |v_ULTIMATE.start_my_init_#res_5| 0) (= v_~ldv_mutex~0_17 1)) InVars {} OutVars{ULTIMATE.start_main_#t~post10=|v_ULTIMATE.start_main_#t~post10_5|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_8|, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_5|, ULTIMATE.start_main_#t~ret1=|v_ULTIMATE.start_main_#t~ret1_5|, ~open_called~0=v_~open_called~0_9, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_5|, ULTIMATE.start_my_init_#res=|v_ULTIMATE.start_my_init_#res_5|, ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_19|, ULTIMATE.start_main_#t~ret11=|v_ULTIMATE.start_main_#t~ret11_5|, ULTIMATE.start_main_#t~ret9=|v_ULTIMATE.start_main_#t~ret9_5|, ~ldv_mutex~0=v_~ldv_mutex~0_17, ULTIMATE.start_main_#t~ret7=|v_ULTIMATE.start_main_#t~ret7_5|, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post10, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~ret1, ~open_called~0, ULTIMATE.start_main_#t~post8, ULTIMATE.start_my_init_#res, ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~ret11, ULTIMATE.start_main_#t~ret9, ~ldv_mutex~0, ULTIMATE.start_main_#t~ret7, ULTIMATE.start_main_#t~ret5] 197#L76-2 [2020-06-22 00:38:43,205 INFO L796 eck$LassoCheckResult]: Loop: 197#L76-2 [214] L76-2-->L80: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= 0 |v_ULTIMATE.start_main_#t~nondet3_3|) |v_ULTIMATE.start_main_#t~switch4_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_3|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet2] 208#L80 [222] L80-->L88: Formula: (and (not |v_ULTIMATE.start_main_#t~switch4_6|) (not |v_ULTIMATE.start_main_#t~switch4_5|) (> 1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4] 206#L88 [193] L88-->L89: Formula: |v_ULTIMATE.start_main_#t~switch4_7| InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} AuxVars[] AssignedVars[] 201#L89 [233] L89-->L78: Formula: (< v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11 1) InVars {ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} OutVars{ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} AuxVars[] AssignedVars[] 182#L78 [168] L78-->L76-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet3] 197#L76-2 [2020-06-22 00:38:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,206 INFO L82 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 4 times [2020-06-22 00:38:43,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:43,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,212 INFO L82 PathProgramCache]: Analyzing trace with hash 233069111, now seen corresponding path program 1 times [2020-06-22 00:38:43,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:38:43,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:38:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:38:43,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 00:38:43,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 00:38:43,224 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 00:38:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 00:38:43,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 00:38:43,225 INFO L87 Difference]: Start difference. First operand 33 states and 81 transitions. cyclomatic complexity: 49 Second operand 3 states. [2020-06-22 00:38:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 00:38:43,294 INFO L93 Difference]: Finished difference Result 41 states and 87 transitions. [2020-06-22 00:38:43,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 00:38:43,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 87 transitions. [2020-06-22 00:38:43,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2020-06-22 00:38:43,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 87 transitions. [2020-06-22 00:38:43,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-06-22 00:38:43,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-06-22 00:38:43,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 87 transitions. [2020-06-22 00:38:43,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:38:43,300 INFO L706 BuchiCegarLoop]: Abstraction has 41 states and 87 transitions. [2020-06-22 00:38:43,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 87 transitions. [2020-06-22 00:38:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-06-22 00:38:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-06-22 00:38:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 87 transitions. [2020-06-22 00:38:43,304 INFO L729 BuchiCegarLoop]: Abstraction has 41 states and 87 transitions. [2020-06-22 00:38:43,304 INFO L609 BuchiCegarLoop]: Abstraction has 41 states and 87 transitions. [2020-06-22 00:38:43,304 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 00:38:43,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 87 transitions. [2020-06-22 00:38:43,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2020-06-22 00:38:43,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:43,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:43,306 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:43,306 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-06-22 00:38:43,306 INFO L794 eck$LassoCheckResult]: Stem: 272#ULTIMATE.startENTRY [252] ULTIMATE.startENTRY-->L76-2: Formula: (and (= 0 v_~open_called~0_9) (= v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20 0) (= |v_ULTIMATE.start_my_init_#res_5| 0) (= v_~ldv_mutex~0_17 1)) InVars {} OutVars{ULTIMATE.start_main_#t~post10=|v_ULTIMATE.start_main_#t~post10_5|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_8|, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_5|, ULTIMATE.start_main_#t~ret1=|v_ULTIMATE.start_main_#t~ret1_5|, ~open_called~0=v_~open_called~0_9, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_5|, ULTIMATE.start_my_init_#res=|v_ULTIMATE.start_my_init_#res_5|, ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_19|, ULTIMATE.start_main_#t~ret11=|v_ULTIMATE.start_main_#t~ret11_5|, ULTIMATE.start_main_#t~ret9=|v_ULTIMATE.start_main_#t~ret9_5|, ~ldv_mutex~0=v_~ldv_mutex~0_17, ULTIMATE.start_main_#t~ret7=|v_ULTIMATE.start_main_#t~ret7_5|, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post10, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~ret1, ~open_called~0, ULTIMATE.start_main_#t~post8, ULTIMATE.start_my_init_#res, ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~ret11, ULTIMATE.start_main_#t~ret9, ~ldv_mutex~0, ULTIMATE.start_main_#t~ret7, ULTIMATE.start_main_#t~ret5] 269#L76-2 [2020-06-22 00:38:43,307 INFO L796 eck$LassoCheckResult]: Loop: 269#L76-2 [215] L76-2-->L80: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (not |v_ULTIMATE.start_main_#t~switch4_3|) (> 0 |v_ULTIMATE.start_main_#t~nondet3_3|)) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_3|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet2] 270#L80 [222] L80-->L88: Formula: (and (not |v_ULTIMATE.start_main_#t~switch4_6|) (not |v_ULTIMATE.start_main_#t~switch4_5|) (> 1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4] 296#L88 [193] L88-->L89: Formula: |v_ULTIMATE.start_main_#t~switch4_7| InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} AuxVars[] AssignedVars[] 279#L89 [233] L89-->L78: Formula: (< v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11 1) InVars {ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} OutVars{ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} AuxVars[] AssignedVars[] 259#L78 [168] L78-->L76-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet3] 269#L76-2 [2020-06-22 00:38:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,307 INFO L82 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 5 times [2020-06-22 00:38:43,307 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:43,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash 233992632, now seen corresponding path program 1 times [2020-06-22 00:38:43,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:38:43,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:38:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:38:43,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 00:38:43,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 00:38:43,333 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 00:38:43,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 00:38:43,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 00:38:43,334 INFO L87 Difference]: Start difference. First operand 41 states and 87 transitions. cyclomatic complexity: 47 Second operand 3 states. [2020-06-22 00:38:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 00:38:43,402 INFO L93 Difference]: Finished difference Result 41 states and 73 transitions. [2020-06-22 00:38:43,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 00:38:43,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 73 transitions. [2020-06-22 00:38:43,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2020-06-22 00:38:43,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 73 transitions. [2020-06-22 00:38:43,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-06-22 00:38:43,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-06-22 00:38:43,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 73 transitions. [2020-06-22 00:38:43,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:38:43,406 INFO L706 BuchiCegarLoop]: Abstraction has 41 states and 73 transitions. [2020-06-22 00:38:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 73 transitions. [2020-06-22 00:38:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-06-22 00:38:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-06-22 00:38:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 73 transitions. [2020-06-22 00:38:43,410 INFO L729 BuchiCegarLoop]: Abstraction has 41 states and 73 transitions. [2020-06-22 00:38:43,410 INFO L609 BuchiCegarLoop]: Abstraction has 41 states and 73 transitions. [2020-06-22 00:38:43,410 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 00:38:43,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 73 transitions. [2020-06-22 00:38:43,411 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2020-06-22 00:38:43,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:38:43,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:38:43,412 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:38:43,412 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-06-22 00:38:43,412 INFO L794 eck$LassoCheckResult]: Stem: 362#ULTIMATE.startENTRY [252] ULTIMATE.startENTRY-->L76-2: Formula: (and (= 0 v_~open_called~0_9) (= v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20 0) (= |v_ULTIMATE.start_my_init_#res_5| 0) (= v_~ldv_mutex~0_17 1)) InVars {} OutVars{ULTIMATE.start_main_#t~post10=|v_ULTIMATE.start_main_#t~post10_5|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_8|, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_20, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_5|, ULTIMATE.start_main_#t~ret1=|v_ULTIMATE.start_main_#t~ret1_5|, ~open_called~0=v_~open_called~0_9, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_5|, ULTIMATE.start_my_init_#res=|v_ULTIMATE.start_my_init_#res_5|, ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_19|, ULTIMATE.start_main_#t~ret11=|v_ULTIMATE.start_main_#t~ret11_5|, ULTIMATE.start_main_#t~ret9=|v_ULTIMATE.start_main_#t~ret9_5|, ~ldv_mutex~0=v_~ldv_mutex~0_17, ULTIMATE.start_main_#t~ret7=|v_ULTIMATE.start_main_#t~ret7_5|, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post10, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~ret1, ~open_called~0, ULTIMATE.start_main_#t~post8, ULTIMATE.start_my_init_#res, ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~ret11, ULTIMATE.start_main_#t~ret9, ~ldv_mutex~0, ULTIMATE.start_main_#t~ret7, ULTIMATE.start_main_#t~ret5] 357#L76-2 [2020-06-22 00:38:43,413 INFO L796 eck$LassoCheckResult]: Loop: 357#L76-2 [217] L76-2-->L80: Formula: (and (not |v_ULTIMATE.start_main_#t~switch4_3|) (< 0 |v_ULTIMATE.start_main_#t~nondet3_3|) (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|)) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_3|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet2] 360#L80 [224] L80-->L88: Formula: (and (not |v_ULTIMATE.start_main_#t~switch4_6|) |v_ULTIMATE.start_main_#t~switch4_5| (= 1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4] 382#L88 [193] L88-->L89: Formula: |v_ULTIMATE.start_main_#t~switch4_7| InVars {ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_7|} AuxVars[] AssignedVars[] 365#L89 [233] L89-->L78: Formula: (< v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11 1) InVars {ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} OutVars{ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0=v_ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0_11} AuxVars[] AssignedVars[] 351#L78 [168] L78-->L76-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~switch4=|v_ULTIMATE.start_main_#t~switch4_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~switch4, ULTIMATE.start_main_#t~nondet3] 357#L76-2 [2020-06-22 00:38:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 6 times [2020-06-22 00:38:43,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:43,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,422 INFO L82 PathProgramCache]: Analyzing trace with hash 235899256, now seen corresponding path program 1 times [2020-06-22 00:38:43,422 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,423 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:38:43,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:38:43,429 INFO L82 PathProgramCache]: Analyzing trace with hash -280614754, now seen corresponding path program 1 times [2020-06-22 00:38:43,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:38:43,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:38:43,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:38:43,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:38:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:38:43,510 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-06-22 00:38:43,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:38:43 BasicIcfg [2020-06-22 00:38:43,521 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 00:38:43,522 INFO L168 Benchmark]: Toolchain (without parser) took 1975.01 ms. Allocated memory was 649.6 MB in the beginning and 692.6 MB in the end (delta: 43.0 MB). Free memory was 564.1 MB in the beginning and 501.4 MB in the end (delta: 62.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,523 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 00:38:43,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.86 ms. Allocated memory was 649.6 MB in the beginning and 692.6 MB in the end (delta: 43.0 MB). Free memory was 564.1 MB in the beginning and 659.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 692.6 MB. Free memory was 658.4 MB in the beginning and 657.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,525 INFO L168 Benchmark]: Boogie Preprocessor took 22.74 ms. Allocated memory is still 692.6 MB. Free memory was 657.3 MB in the beginning and 655.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,526 INFO L168 Benchmark]: RCFGBuilder took 278.31 ms. Allocated memory is still 692.6 MB. Free memory was 655.2 MB in the beginning and 633.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,526 INFO L168 Benchmark]: BlockEncodingV2 took 146.19 ms. Allocated memory is still 692.6 MB. Free memory was 633.5 MB in the beginning and 623.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,527 INFO L168 Benchmark]: TraceAbstraction took 166.09 ms. Allocated memory is still 692.6 MB. Free memory was 622.7 MB in the beginning and 611.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,527 INFO L168 Benchmark]: BuchiAutomizer took 1005.85 ms. Allocated memory is still 692.6 MB. Free memory was 611.8 MB in the beginning and 501.4 MB in the end (delta: 110.4 MB). Peak memory consumption was 110.4 MB. Max. memory is 50.3 GB. [2020-06-22 00:38:43,531 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 38 locations, 55 edges - StatisticsResult: Encoded RCFG 16 locations, 43 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 311.86 ms. Allocated memory was 649.6 MB in the beginning and 692.6 MB in the end (delta: 43.0 MB). Free memory was 564.1 MB in the beginning and 659.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 692.6 MB. Free memory was 658.4 MB in the beginning and 657.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 22.74 ms. Allocated memory is still 692.6 MB. Free memory was 657.3 MB in the beginning and 655.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 278.31 ms. Allocated memory is still 692.6 MB. Free memory was 655.2 MB in the beginning and 633.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 146.19 ms. Allocated memory is still 692.6 MB. Free memory was 633.5 MB in the beginning and 623.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 166.09 ms. Allocated memory is still 692.6 MB. Free memory was 622.7 MB in the beginning and 611.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1005.85 ms. Allocated memory is still 692.6 MB. Free memory was 611.8 MB in the beginning and 501.4 MB in the end (delta: 110.4 MB). Peak memory consumption was 110.4 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 89]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 41 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 41 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 68 SDtfs, 111 SDslu, 68 SDs, 0 SdLazy, 229 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 76]: Nontermination argument in form of an infinite program execution. [2020-06-22 00:38:43,542 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-06-22 00:38:43,543 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5caf0fab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@197df514=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e56500a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2826bdea=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12576166=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6d1d45dd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ae24922=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a52d95b=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ba56784=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@61be3f5b=0, ldv_s_misc_fops_file_operations=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 76]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L69] open_called = 0 [L70] return 0; Loop: [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 00:38:38.313 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 00:38:43.778 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check