/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:32:09,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:32:09,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:32:09,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:32:09,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:32:09,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:32:09,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:32:09,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:32:09,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:32:09,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:32:09,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:32:09,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:32:09,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:32:09,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:32:09,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:32:09,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:32:09,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:32:09,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:32:09,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:32:09,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:32:09,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:32:09,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:32:09,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:32:09,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:32:09,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:32:09,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:32:09,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:32:09,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:32:09,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:32:09,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:32:09,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:32:09,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:32:09,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:32:09,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:32:09,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:32:09,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:32:09,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:32:09,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:32:09,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:32:09,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:32:09,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:32:09,561 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:32:09,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:32:09,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:32:09,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:32:09,577 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:32:09,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:32:09,578 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:32:09,578 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:32:09,578 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:32:09,578 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:32:09,578 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:32:09,578 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:32:09,579 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:32:09,579 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:32:09,579 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:32:09,579 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:09,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:32:09,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:32:09,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:32:09,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:32:09,580 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:32:09,580 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:32:09,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:32:09,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:32:09,581 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:32:09,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:32:09,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:32:09,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:32:09,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:32:09,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:32:09,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:32:09,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:32:09,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:32:09,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:32:09,769 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:32:09,770 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:32:09,832 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_tdnBBs/tmp/194f4b3fab7b4ea984591109e199e72d/FLAG5f4dd3a93 [2020-07-01 10:32:10,186 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:32:10,187 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:32:10,194 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_tdnBBs/tmp/194f4b3fab7b4ea984591109e199e72d/FLAG5f4dd3a93 [2020-07-01 10:32:10,613 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_tdnBBs/tmp/194f4b3fab7b4ea984591109e199e72d [2020-07-01 10:32:10,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:32:10,625 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:32:10,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:32:10,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:32:10,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:32:10,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6617a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10, skipping insertion in model container [2020-07-01 10:32:10,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:32:10,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:32:10,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:32:10,882 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:32:10,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:32:10,921 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:32:10,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10 WrapperNode [2020-07-01 10:32:10,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:32:10,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:32:10,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:32:10,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:32:10,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:32:10,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:32:10,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:32:10,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:32:10,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (1/1) ... [2020-07-01 10:32:10,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:32:10,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:32:10,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:32:10,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:32:10,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (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 [2020-07-01 10:32:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 10:32:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:32:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:32:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 10:32:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-01 10:32:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-01 10:32:11,236 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:32:11,237 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:32:11,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:11 BoogieIcfgContainer [2020-07-01 10:32:11,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:32:11,242 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:32:11,242 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:32:11,244 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:32:11,245 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:11" (1/1) ... [2020-07-01 10:32:11,258 INFO L313 BlockEncoder]: Initial Icfg 16 locations, 18 edges [2020-07-01 10:32:11,259 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:32:11,260 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:32:11,261 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:32:11,261 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:32:11,263 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:32:11,264 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:32:11,264 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:32:11,283 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:32:11,303 INFO L200 BlockEncoder]: SBE split 7 edges [2020-07-01 10:32:11,308 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:32:11,309 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:32:11,325 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:32:11,327 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:32:11,329 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:32:11,329 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:32:11,329 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:32:11,330 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:32:11,330 INFO L313 BlockEncoder]: Encoded RCFG 12 locations, 21 edges [2020-07-01 10:32:11,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:32:11 BasicIcfg [2020-07-01 10:32:11,331 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:32:11,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:32:11,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:32:11,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:32:11,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:32:10" (1/4) ... [2020-07-01 10:32:11,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5b05af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:32:11, skipping insertion in model container [2020-07-01 10:32:11,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:10" (2/4) ... [2020-07-01 10:32:11,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5b05af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:32:11, skipping insertion in model container [2020-07-01 10:32:11,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:11" (3/4) ... [2020-07-01 10:32:11,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5b05af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:32:11, skipping insertion in model container [2020-07-01 10:32:11,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:32:11" (4/4) ... [2020-07-01 10:32:11,340 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:32:11,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:32:11,359 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-01 10:32:11,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-01 10:32:11,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:32:11,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:32:11,397 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:32:11,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:32:11,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:32:11,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:32:11,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:32:11,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:32:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-01 10:32:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 10:32:11,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:32:11,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 10:32:11,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:32:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 69203968, now seen corresponding path program 1 times [2020-07-01 10:32:11,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:11,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846350428] [2020-07-01 10:32:11,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:11,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846350428] [2020-07-01 10:32:11,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:32:11,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:32:11,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031090044] [2020-07-01 10:32:11,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:32:11,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:32:11,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:32:11,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:32:11,610 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-07-01 10:32:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:32:11,670 INFO L93 Difference]: Finished difference Result 22 states and 39 transitions. [2020-07-01 10:32:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:32:11,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-01 10:32:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:32:11,684 INFO L225 Difference]: With dead ends: 22 [2020-07-01 10:32:11,684 INFO L226 Difference]: Without dead ends: 12 [2020-07-01 10:32:11,688 INFO L675 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 [2020-07-01 10:32:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-01 10:32:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-01 10:32:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-01 10:32:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 20 transitions. [2020-07-01 10:32:11,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 20 transitions. Word has length 5 [2020-07-01 10:32:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:32:11,723 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 20 transitions. [2020-07-01 10:32:11,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:32:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 20 transitions. [2020-07-01 10:32:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 10:32:11,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:32:11,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 10:32:11,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 10:32:11,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:32:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:11,726 INFO L82 PathProgramCache]: Analyzing trace with hash 69233759, now seen corresponding path program 1 times [2020-07-01 10:32:11,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:11,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802596263] [2020-07-01 10:32:11,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:11,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802596263] [2020-07-01 10:32:11,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:32:11,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:32:11,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63159682] [2020-07-01 10:32:11,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:32:11,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:32:11,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:32:11,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:32:11,756 INFO L87 Difference]: Start difference. First operand 12 states and 20 transitions. Second operand 3 states. [2020-07-01 10:32:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:32:11,804 INFO L93 Difference]: Finished difference Result 24 states and 41 transitions. [2020-07-01 10:32:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:32:11,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-01 10:32:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:32:11,806 INFO L225 Difference]: With dead ends: 24 [2020-07-01 10:32:11,806 INFO L226 Difference]: Without dead ends: 12 [2020-07-01 10:32:11,807 INFO L675 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 [2020-07-01 10:32:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-01 10:32:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-01 10:32:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-01 10:32:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-07-01 10:32:11,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 5 [2020-07-01 10:32:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:32:11,810 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-07-01 10:32:11,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:32:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-07-01 10:32:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 10:32:11,811 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:32:11,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 10:32:11,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 10:32:11,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:32:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash 69235681, now seen corresponding path program 1 times [2020-07-01 10:32:11,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:11,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858705206] [2020-07-01 10:32:11,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:11,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858705206] [2020-07-01 10:32:11,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:32:11,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:32:11,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979980803] [2020-07-01 10:32:11,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:32:11,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:32:11,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:32:11,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:32:11,846 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 3 states. [2020-07-01 10:32:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:32:11,882 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2020-07-01 10:32:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:32:11,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-01 10:32:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:32:11,883 INFO L225 Difference]: With dead ends: 12 [2020-07-01 10:32:11,884 INFO L226 Difference]: Without dead ends: 10 [2020-07-01 10:32:11,884 INFO L675 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 [2020-07-01 10:32:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-01 10:32:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 10:32:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 10:32:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-07-01 10:32:11,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2020-07-01 10:32:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:32:11,887 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-07-01 10:32:11,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:32:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-07-01 10:32:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 10:32:11,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:32:11,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 10:32:11,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 10:32:11,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:32:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:11,889 INFO L82 PathProgramCache]: Analyzing trace with hash 69235682, now seen corresponding path program 1 times [2020-07-01 10:32:11,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:11,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516001332] [2020-07-01 10:32:11,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:11,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516001332] [2020-07-01 10:32:11,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:32:11,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:32:11,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468130146] [2020-07-01 10:32:11,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 10:32:11,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:32:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:32:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:32:11,945 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2020-07-01 10:32:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:32:11,983 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-01 10:32:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:32:11,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-01 10:32:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:32:11,985 INFO L225 Difference]: With dead ends: 13 [2020-07-01 10:32:11,985 INFO L226 Difference]: Without dead ends: 12 [2020-07-01 10:32:11,986 INFO L675 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 [2020-07-01 10:32:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-01 10:32:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-07-01 10:32:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 10:32:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-07-01 10:32:11,988 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2020-07-01 10:32:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:32:11,989 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-07-01 10:32:11,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 10:32:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-07-01 10:32:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 10:32:11,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:32:11,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 10:32:11,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 10:32:11,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:32:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:11,990 INFO L82 PathProgramCache]: Analyzing trace with hash 69235683, now seen corresponding path program 1 times [2020-07-01 10:32:11,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:11,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860823426] [2020-07-01 10:32:11,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:12,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860823426] [2020-07-01 10:32:12,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:32:12,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:32:12,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250488109] [2020-07-01 10:32:12,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 10:32:12,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:32:12,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:32:12,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:32:12,031 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-07-01 10:32:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:32:12,062 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-07-01 10:32:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:32:12,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-01 10:32:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:32:12,063 INFO L225 Difference]: With dead ends: 11 [2020-07-01 10:32:12,064 INFO L226 Difference]: Without dead ends: 10 [2020-07-01 10:32:12,064 INFO L675 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 [2020-07-01 10:32:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-01 10:32:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 10:32:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 10:32:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-07-01 10:32:12,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2020-07-01 10:32:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:32:12,067 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-07-01 10:32:12,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 10:32:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-07-01 10:32:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-01 10:32:12,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:32:12,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:32:12,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-01 10:32:12,068 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:32:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1015191390, now seen corresponding path program 1 times [2020-07-01 10:32:12,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:12,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242107193] [2020-07-01 10:32:12,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:12,117 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:12,118 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-01 10:32:12,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-01 10:32:12,142 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 10:32:12,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:32:12 BasicIcfg [2020-07-01 10:32:12,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:32:12,145 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:32:12,145 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:32:12,149 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:32:12,149 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 10:32:12,149 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 10:32:12,149 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 10:32:12,149 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 10:32:12,149 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 10:32:12,150 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:32:12,152 INFO L168 Benchmark]: Toolchain (without parser) took 1525.97 ms. Allocated memory was 514.9 MB in the beginning and 558.4 MB in the end (delta: 43.5 MB). Free memory was 438.8 MB in the beginning and 432.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,153 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:32:12,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.65 ms. Allocated memory was 514.9 MB in the beginning and 558.4 MB in the end (delta: 43.5 MB). Free memory was 438.3 MB in the beginning and 525.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.45 ms. Allocated memory is still 558.4 MB. Free memory was 525.8 MB in the beginning and 524.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,155 INFO L168 Benchmark]: Boogie Preprocessor took 22.52 ms. Allocated memory is still 558.4 MB. Free memory was 524.1 MB in the beginning and 522.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,155 INFO L168 Benchmark]: RCFGBuilder took 258.98 ms. Allocated memory is still 558.4 MB. Free memory was 522.5 MB in the beginning and 506.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,156 INFO L168 Benchmark]: BlockEncodingV2 took 89.45 ms. Allocated memory is still 558.4 MB. Free memory was 506.9 MB in the beginning and 500.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,156 INFO L168 Benchmark]: TraceAbstraction took 812.77 ms. Allocated memory is still 558.4 MB. Free memory was 499.8 MB in the beginning and 433.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,157 INFO L168 Benchmark]: BuchiAutomizer took 4.26 ms. Allocated memory is still 558.4 MB. Free memory was 433.3 MB in the beginning and 432.7 MB in the end (delta: 539.1 kB). Peak memory consumption was 539.1 kB. Max. memory is 50.3 GB. [2020-07-01 10:32:12,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 16 locations, 18 edges - StatisticsResult: Encoded RCFG 12 locations, 21 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.65 ms. Allocated memory was 514.9 MB in the beginning and 558.4 MB in the end (delta: 43.5 MB). Free memory was 438.3 MB in the beginning and 525.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.45 ms. Allocated memory is still 558.4 MB. Free memory was 525.8 MB in the beginning and 524.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 22.52 ms. Allocated memory is still 558.4 MB. Free memory was 524.1 MB in the beginning and 522.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * RCFGBuilder took 258.98 ms. Allocated memory is still 558.4 MB. Free memory was 522.5 MB in the beginning and 506.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 89.45 ms. Allocated memory is still 558.4 MB. Free memory was 506.9 MB in the beginning and 500.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 812.77 ms. Allocated memory is still 558.4 MB. Free memory was 499.8 MB in the beginning and 433.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.26 ms. Allocated memory is still 558.4 MB. Free memory was 433.3 MB in the beginning and 432.7 MB in the end (delta: 539.1 kB). Peak memory consumption was 539.1 kB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L12] 0 <= i && i < 10 && a[i] >= 0 [L12] EXPR a[i] [L12] 0 <= i && i < 10 && a[i] >= 0 [L12] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L13] i = __VERIFIER_nondet_int() [L14] a[i] = 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 50 SDslu, 13 SDs, 0 SdLazy, 76 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:32:07.287 ----------------------------------------------- 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/BenchExec_run_tdnBBs/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:32:12.394 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check