MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 07:54:38,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 07:54:38,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 07:54:38,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 07:54:38,836 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 07:54:38,837 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 07:54:38,838 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 07:54:38,839 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 07:54:38,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 07:54:38,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 07:54:38,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 07:54:38,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 07:54:38,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 07:54:38,844 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 07:54:38,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 07:54:38,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 07:54:38,847 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 07:54:38,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 07:54:38,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 07:54:38,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 07:54:38,853 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 07:54:38,854 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 07:54:38,856 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 07:54:38,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 07:54:38,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 07:54:38,858 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 07:54:38,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 07:54:38,859 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 07:54:38,859 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 07:54:38,860 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 07:54:38,860 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 07:54:38,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 07:54:38,862 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 07:54:38,862 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 07:54:38,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 07:54:38,863 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 07:54:38,863 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 07:54:38,864 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 07:54:38,865 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 07:54:38,865 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 07:54:38,879 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 07:54:38,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 07:54:38,880 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 07:54:38,880 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 07:54:38,880 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 07:54:38,881 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 07:54:38,881 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 07:54:38,881 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 07:54:38,881 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 07:54:38,881 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 07:54:38,881 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 07:54:38,882 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 07:54:38,882 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 07:54:38,882 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 07:54:38,882 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:54:38,882 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 07:54:38,882 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 07:54:38,882 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 07:54:38,883 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 07:54:38,883 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 07:54:38,883 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 07:54:38,883 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 07:54:38,883 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 07:54:38,883 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 07:54:38,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 07:54:38,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 07:54:38,884 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 07:54:38,884 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 07:54:38,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 07:54:38,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 07:54:38,922 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 07:54:38,926 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 07:54:38,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 07:54:38,928 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 07:54:38,928 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 07:54:39,028 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/59c8e157d29743019d8401674751602f/FLAGce785f2d0 [2020-06-22 07:54:39,394 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 07:54:39,395 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 07:54:39,395 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-06-22 07:54:39,402 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/59c8e157d29743019d8401674751602f/FLAGce785f2d0 [2020-06-22 07:54:39,791 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/59c8e157d29743019d8401674751602f [2020-06-22 07:54:39,802 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 07:54:39,804 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 07:54:39,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 07:54:39,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 07:54:39,809 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 07:54:39,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 07:54:39" (1/1) ... [2020-06-22 07:54:39,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ac6638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:39, skipping insertion in model container [2020-06-22 07:54:39,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 07:54:39" (1/1) ... [2020-06-22 07:54:39,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 07:54:39,838 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 07:54:40,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 07:54:40,077 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 07:54:40,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 07:54:40,112 INFO L195 MainTranslator]: Completed translation [2020-06-22 07:54:40,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40 WrapperNode [2020-06-22 07:54:40,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 07:54:40,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 07:54:40,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 07:54:40,114 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 07:54:40,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 07:54:40,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 07:54:40,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 07:54:40,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 07:54:40,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 07:54:40,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 07:54:40,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 07:54:40,183 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 07:54:40,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 07:54:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-06-22 07:54:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-06-22 07:54:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 07:54:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 07:54:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-06-22 07:54:40,514 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 07:54:40,514 INFO L286 CfgBuilder]: Removed 9 assue(true) statements. [2020-06-22 07:54:40,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:54:40 BoogieIcfgContainer [2020-06-22 07:54:40,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 07:54:40,516 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 07:54:40,516 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 07:54:40,518 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 07:54:40,519 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:54:40" (1/1) ... [2020-06-22 07:54:40,536 INFO L313 BlockEncoder]: Initial Icfg 32 locations, 36 edges [2020-06-22 07:54:40,537 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 07:54:40,538 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 07:54:40,538 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 07:54:40,539 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 07:54:40,540 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 07:54:40,541 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 07:54:40,541 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 07:54:40,567 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 07:54:40,602 INFO L200 BlockEncoder]: SBE split 14 edges [2020-06-22 07:54:40,607 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 07:54:40,609 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 07:54:40,646 INFO L100 BaseMinimizeStates]: Removed 14 edges and 7 locations by large block encoding [2020-06-22 07:54:40,648 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 07:54:40,650 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 07:54:40,650 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 07:54:40,651 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 07:54:40,651 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 07:54:40,652 INFO L313 BlockEncoder]: Encoded RCFG 24 locations, 51 edges [2020-06-22 07:54:40,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:54:40 BasicIcfg [2020-06-22 07:54:40,652 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 07:54:40,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 07:54:40,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 07:54:40,656 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 07:54:40,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 07:54:39" (1/4) ... [2020-06-22 07:54:40,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38673887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:54:40, skipping insertion in model container [2020-06-22 07:54:40,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:54:40" (2/4) ... [2020-06-22 07:54:40,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38673887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:54:40, skipping insertion in model container [2020-06-22 07:54:40,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:54:40" (3/4) ... [2020-06-22 07:54:40,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38673887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:54:40, skipping insertion in model container [2020-06-22 07:54:40,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:54:40" (4/4) ... [2020-06-22 07:54:40,660 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 07:54:40,670 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 07:54:40,678 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-06-22 07:54:40,694 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-06-22 07:54:40,723 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 07:54:40,724 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 07:54:40,724 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 07:54:40,724 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 07:54:40,724 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 07:54:40,724 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 07:54:40,724 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 07:54:40,724 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 07:54:40,725 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 07:54:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-06-22 07:54:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-06-22 07:54:40,745 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:40,746 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-06-22 07:54:40,746 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:40,752 INFO L82 PathProgramCache]: Analyzing trace with hash 5488974, now seen corresponding path program 1 times [2020-06-22 07:54:40,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:40,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:40,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:40,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:40,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:40,907 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 07:54:40,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:40,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 07:54:40,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 07:54:40,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 07:54:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:40,930 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-06-22 07:54:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,055 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2020-06-22 07:54:41,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 07:54:41,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-06-22 07:54:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,070 INFO L225 Difference]: With dead ends: 42 [2020-06-22 07:54:41,070 INFO L226 Difference]: Without dead ends: 23 [2020-06-22 07:54:41,074 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-06-22 07:54:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-06-22 07:54:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-06-22 07:54:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 47 transitions. [2020-06-22 07:54:41,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 47 transitions. Word has length 4 [2020-06-22 07:54:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,113 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 47 transitions. [2020-06-22 07:54:41,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 07:54:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 47 transitions. [2020-06-22 07:54:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-06-22 07:54:41,113 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,114 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-06-22 07:54:41,114 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,114 INFO L82 PathProgramCache]: Analyzing trace with hash 5488976, now seen corresponding path program 1 times [2020-06-22 07:54:41,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,153 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 07:54:41,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 07:54:41,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 07:54:41,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 07:54:41,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 07:54:41,156 INFO L87 Difference]: Start difference. First operand 23 states and 47 transitions. Second operand 4 states. [2020-06-22 07:54:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,234 INFO L93 Difference]: Finished difference Result 24 states and 47 transitions. [2020-06-22 07:54:41,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 07:54:41,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-06-22 07:54:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,236 INFO L225 Difference]: With dead ends: 24 [2020-06-22 07:54:41,236 INFO L226 Difference]: Without dead ends: 23 [2020-06-22 07:54:41,237 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 07:54:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-06-22 07:54:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-06-22 07:54:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-06-22 07:54:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 46 transitions. [2020-06-22 07:54:41,242 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 46 transitions. Word has length 4 [2020-06-22 07:54:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,242 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 46 transitions. [2020-06-22 07:54:41,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 07:54:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 46 transitions. [2020-06-22 07:54:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-06-22 07:54:41,243 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-06-22 07:54:41,243 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash 5488977, now seen corresponding path program 1 times [2020-06-22 07:54:41,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,269 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 07:54:41,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 07:54:41,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 07:54:41,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 07:54:41,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,270 INFO L87 Difference]: Start difference. First operand 23 states and 46 transitions. Second operand 3 states. [2020-06-22 07:54:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,336 INFO L93 Difference]: Finished difference Result 23 states and 46 transitions. [2020-06-22 07:54:41,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 07:54:41,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-06-22 07:54:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,337 INFO L225 Difference]: With dead ends: 23 [2020-06-22 07:54:41,337 INFO L226 Difference]: Without dead ends: 22 [2020-06-22 07:54:41,338 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-06-22 07:54:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-06-22 07:54:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-06-22 07:54:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 45 transitions. [2020-06-22 07:54:41,342 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 45 transitions. Word has length 4 [2020-06-22 07:54:41,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,343 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 45 transitions. [2020-06-22 07:54:41,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 07:54:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 45 transitions. [2020-06-22 07:54:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-06-22 07:54:41,343 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-06-22 07:54:41,344 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,344 INFO L82 PathProgramCache]: Analyzing trace with hash 170159490, now seen corresponding path program 1 times [2020-06-22 07:54:41,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,386 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 07:54:41,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 07:54:41,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 07:54:41,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 07:54:41,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,388 INFO L87 Difference]: Start difference. First operand 22 states and 45 transitions. Second operand 3 states. [2020-06-22 07:54:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,462 INFO L93 Difference]: Finished difference Result 22 states and 45 transitions. [2020-06-22 07:54:41,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 07:54:41,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-06-22 07:54:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,463 INFO L225 Difference]: With dead ends: 22 [2020-06-22 07:54:41,463 INFO L226 Difference]: Without dead ends: 19 [2020-06-22 07:54:41,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-06-22 07:54:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-06-22 07:54:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-06-22 07:54:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 39 transitions. [2020-06-22 07:54:41,467 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 39 transitions. Word has length 5 [2020-06-22 07:54:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,468 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 39 transitions. [2020-06-22 07:54:41,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 07:54:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 39 transitions. [2020-06-22 07:54:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-06-22 07:54:41,468 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,469 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-06-22 07:54:41,469 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash 170159492, now seen corresponding path program 1 times [2020-06-22 07:54:41,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,500 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 07:54:41,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 07:54:41,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 07:54:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 07:54:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-22 07:54:41,501 INFO L87 Difference]: Start difference. First operand 19 states and 39 transitions. Second operand 4 states. [2020-06-22 07:54:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,606 INFO L93 Difference]: Finished difference Result 37 states and 72 transitions. [2020-06-22 07:54:41,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 07:54:41,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-06-22 07:54:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,607 INFO L225 Difference]: With dead ends: 37 [2020-06-22 07:54:41,607 INFO L226 Difference]: Without dead ends: 34 [2020-06-22 07:54:41,608 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-06-22 07:54:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-06-22 07:54:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2020-06-22 07:54:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-06-22 07:54:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 61 transitions. [2020-06-22 07:54:41,615 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 61 transitions. Word has length 5 [2020-06-22 07:54:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,615 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 61 transitions. [2020-06-22 07:54:41,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 07:54:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 61 transitions. [2020-06-22 07:54:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-06-22 07:54:41,616 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,616 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-06-22 07:54:41,616 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 170159493, now seen corresponding path program 1 times [2020-06-22 07:54:41,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,685 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 07:54:41,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 07:54:41,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-06-22 07:54:41,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 07:54:41,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-06-22 07:54:41,687 INFO L87 Difference]: Start difference. First operand 26 states and 61 transitions. Second operand 5 states. [2020-06-22 07:54:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,846 INFO L93 Difference]: Finished difference Result 34 states and 69 transitions. [2020-06-22 07:54:41,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-06-22 07:54:41,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-06-22 07:54:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,848 INFO L225 Difference]: With dead ends: 34 [2020-06-22 07:54:41,848 INFO L226 Difference]: Without dead ends: 31 [2020-06-22 07:54:41,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-06-22 07:54:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-06-22 07:54:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-06-22 07:54:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-06-22 07:54:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 58 transitions. [2020-06-22 07:54:41,854 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 58 transitions. Word has length 5 [2020-06-22 07:54:41,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,854 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 58 transitions. [2020-06-22 07:54:41,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-06-22 07:54:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 58 transitions. [2020-06-22 07:54:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-06-22 07:54:41,855 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,855 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 07:54:41,855 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1576972878, now seen corresponding path program 1 times [2020-06-22 07:54:41,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:54:41,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 07:54:41,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 07:54:41,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 07:54:41,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,882 INFO L87 Difference]: Start difference. First operand 26 states and 58 transitions. Second operand 3 states. [2020-06-22 07:54:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:41,957 INFO L93 Difference]: Finished difference Result 47 states and 102 transitions. [2020-06-22 07:54:41,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 07:54:41,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-06-22 07:54:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:41,959 INFO L225 Difference]: With dead ends: 47 [2020-06-22 07:54:41,959 INFO L226 Difference]: Without dead ends: 30 [2020-06-22 07:54:41,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-06-22 07:54:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-06-22 07:54:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-06-22 07:54:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 61 transitions. [2020-06-22 07:54:41,965 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 61 transitions. Word has length 9 [2020-06-22 07:54:41,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:41,965 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 61 transitions. [2020-06-22 07:54:41,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 07:54:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 61 transitions. [2020-06-22 07:54:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-06-22 07:54:41,966 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:41,966 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 07:54:41,966 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1576943087, now seen corresponding path program 1 times [2020-06-22 07:54:41,966 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:41,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:41,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:41,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:54:41,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:54:41,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 07:54:41,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 07:54:41,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 07:54:41,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:41,992 INFO L87 Difference]: Start difference. First operand 29 states and 61 transitions. Second operand 3 states. [2020-06-22 07:54:42,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:42,048 INFO L93 Difference]: Finished difference Result 50 states and 109 transitions. [2020-06-22 07:54:42,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 07:54:42,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-06-22 07:54:42,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:42,049 INFO L225 Difference]: With dead ends: 50 [2020-06-22 07:54:42,049 INFO L226 Difference]: Without dead ends: 29 [2020-06-22 07:54:42,050 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:54:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-06-22 07:54:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-06-22 07:54:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-06-22 07:54:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 57 transitions. [2020-06-22 07:54:42,055 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 57 transitions. Word has length 9 [2020-06-22 07:54:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:42,055 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 57 transitions. [2020-06-22 07:54:42,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 07:54:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 57 transitions. [2020-06-22 07:54:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-06-22 07:54:42,056 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:42,056 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 07:54:42,056 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:42,056 INFO L82 PathProgramCache]: Analyzing trace with hash -654102284, now seen corresponding path program 1 times [2020-06-22 07:54:42,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:42,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:42,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:42,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:42,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:54:42,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-22 07:54:42,097 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-22 07:54:42,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:42,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-22 07:54:42,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:54:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:54:42,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-06-22 07:54:42,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-06-22 07:54:42,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-06-22 07:54:42,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-06-22 07:54:42,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-06-22 07:54:42,191 INFO L87 Difference]: Start difference. First operand 29 states and 57 transitions. Second operand 6 states. [2020-06-22 07:54:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:42,326 INFO L93 Difference]: Finished difference Result 38 states and 66 transitions. [2020-06-22 07:54:42,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-06-22 07:54:42,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-06-22 07:54:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:42,329 INFO L225 Difference]: With dead ends: 38 [2020-06-22 07:54:42,329 INFO L226 Difference]: Without dead ends: 35 [2020-06-22 07:54:42,329 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-06-22 07:54:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-06-22 07:54:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-06-22 07:54:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-06-22 07:54:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 54 transitions. [2020-06-22 07:54:42,334 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 54 transitions. Word has length 11 [2020-06-22 07:54:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:42,336 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 54 transitions. [2020-06-22 07:54:42,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-06-22 07:54:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 54 transitions. [2020-06-22 07:54:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-06-22 07:54:42,336 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:42,337 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 07:54:42,337 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash -654102283, now seen corresponding path program 1 times [2020-06-22 07:54:42,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:42,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:42,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:42,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:42,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:54:42,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-22 07:54:42,455 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-22 07:54:42,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:54:42,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 23 conjunts are in the unsatisfiable core [2020-06-22 07:54:42,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:54:42,533 INFO L374 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-06-22 07:54:42,533 INFO L427 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-06-22 07:54:42,545 INFO L497 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-06-22 07:54:42,546 INFO L427 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-06-22 07:54:42,546 INFO L217 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:24 [2020-06-22 07:54:42,581 INFO L340 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-06-22 07:54:42,582 INFO L374 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2020-06-22 07:54:42,599 INFO L427 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-06-22 07:54:42,616 INFO L497 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-06-22 07:54:42,622 INFO L427 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-06-22 07:54:42,623 INFO L217 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-06-22 07:54:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:54:42,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-22 07:54:42,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-06-22 07:54:42,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-06-22 07:54:42,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-06-22 07:54:42,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-06-22 07:54:42,701 INFO L87 Difference]: Start difference. First operand 29 states and 54 transitions. Second operand 11 states. [2020-06-22 07:54:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:54:43,235 INFO L93 Difference]: Finished difference Result 50 states and 90 transitions. [2020-06-22 07:54:43,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-06-22 07:54:43,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-06-22 07:54:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 07:54:43,236 INFO L225 Difference]: With dead ends: 50 [2020-06-22 07:54:43,236 INFO L226 Difference]: Without dead ends: 47 [2020-06-22 07:54:43,237 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-06-22 07:54:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-06-22 07:54:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2020-06-22 07:54:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-06-22 07:54:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 51 transitions. [2020-06-22 07:54:43,242 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 51 transitions. Word has length 11 [2020-06-22 07:54:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 07:54:43,242 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 51 transitions. [2020-06-22 07:54:43,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-06-22 07:54:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 51 transitions. [2020-06-22 07:54:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-06-22 07:54:43,243 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 07:54:43,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 07:54:43,243 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== [2020-06-22 07:54:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:54:43,244 INFO L82 PathProgramCache]: Analyzing trace with hash 357354030, now seen corresponding path program 1 times [2020-06-22 07:54:43,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:54:43,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:54:43,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:43,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:54:43,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:54:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:54:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:54:43,289 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2020-06-22 07:54:43,318 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-06-22 07:54:43,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:54:43 BasicIcfg [2020-06-22 07:54:43,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 07:54:43,321 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 07:54:43,321 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 07:54:43,324 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 07:54:43,325 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 07:54:43,325 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 07:54:43,325 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 07:54:43,325 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 07:54:43,325 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 07:54:43,325 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 07:54:43,326 INFO L168 Benchmark]: Toolchain (without parser) took 3522.88 ms. Allocated memory was 649.6 MB in the beginning and 748.7 MB in the end (delta: 99.1 MB). Free memory was 564.4 MB in the beginning and 614.2 MB in the end (delta: -49.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,327 INFO L168 Benchmark]: CDTParser took 0.17 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 07:54:43,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.78 ms. Allocated memory was 649.6 MB in the beginning and 679.5 MB in the end (delta: 29.9 MB). Free memory was 563.4 MB in the beginning and 644.7 MB in the end (delta: -81.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 679.5 MB. Free memory was 643.6 MB in the beginning and 642.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,328 INFO L168 Benchmark]: Boogie Preprocessor took 25.22 ms. Allocated memory is still 679.5 MB. Free memory was 642.5 MB in the beginning and 640.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,329 INFO L168 Benchmark]: RCFGBuilder took 333.45 ms. Allocated memory is still 679.5 MB. Free memory was 640.3 MB in the beginning and 618.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,329 INFO L168 Benchmark]: BlockEncodingV2 took 136.09 ms. Allocated memory is still 679.5 MB. Free memory was 618.1 MB in the beginning and 608.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,330 INFO L168 Benchmark]: TraceAbstraction took 2667.69 ms. Allocated memory was 679.5 MB in the beginning and 748.7 MB in the end (delta: 69.2 MB). Free memory was 608.3 MB in the beginning and 614.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 63.4 MB. Max. memory is 50.3 GB. [2020-06-22 07:54:43,330 INFO L168 Benchmark]: BuchiAutomizer took 4.07 ms. Allocated memory is still 748.7 MB. Free memory is still 614.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 07:54:43,334 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 32 locations, 36 edges - StatisticsResult: Encoded RCFG 24 locations, 51 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 308.78 ms. Allocated memory was 649.6 MB in the beginning and 679.5 MB in the end (delta: 29.9 MB). Free memory was 563.4 MB in the beginning and 644.7 MB in the end (delta: -81.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 679.5 MB. Free memory was 643.6 MB in the beginning and 642.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 25.22 ms. Allocated memory is still 679.5 MB. Free memory was 642.5 MB in the beginning and 640.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 333.45 ms. Allocated memory is still 679.5 MB. Free memory was 640.3 MB in the beginning and 618.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 136.09 ms. Allocated memory is still 679.5 MB. Free memory was 618.1 MB in the beginning and 608.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 2667.69 ms. Allocated memory was 679.5 MB in the beginning and 748.7 MB in the end (delta: 69.2 MB). Free memory was 608.3 MB in the beginning and 614.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 63.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.07 ms. Allocated memory is still 748.7 MB. Free memory is still 614.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L12] int length = __VERIFIER_nondet_int(); [L13] COND FALSE !(length < 1) [L16] char* nondetString = (char*) malloc(length * sizeof(char)); [L17] nondetString[length-1] = '\0' [L18] return nondetString; [L30] EXPR \read(*s) [L30] *s != '\0' && *s != (char)c [L30] COND FALSE !(*s != '\0' && *s != (char)c) [L32] EXPR \read(*s) [L32] EXPR (*s == c) ? (char *) s : 0 [L32] return ( (*s == c) ? (char *) s : 0 ); - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 10 error locations. UNSAFE Result, 2.6s OverallTime, 11 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 85 SDtfs, 826 SDslu, 283 SDs, 0 SdLazy, 703 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=7, 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: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 41 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 77 ConstructedInterpolants, 1 QuantifiedInterpolants, 2695 SizeOfPredicates, 12 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 07:54:36.517 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 07:54:43.564 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check