java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:01:22,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:01:22,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:01:22,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:01:22,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:01:22,407 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:01:22,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:01:22,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:01:22,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:01:22,410 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:01:22,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:01:22,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:01:22,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:01:22,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:01:22,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:01:22,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:01:22,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:01:22,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:01:22,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:01:22,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:01:22,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:01:22,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:01:22,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:01:22,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:01:22,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:01:22,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:01:22,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:01:22,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:01:22,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:01:22,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:01:22,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:01:22,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:01:22,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:01:22,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:01:22,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:01:22,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:01:22,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:01:22,500 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:01:22,501 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:01:22,501 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2019-09-20 13:01:22,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1298fb699/ea35fa8766e54c31b58b47b99906c328/FLAG82f968682 [2019-09-20 13:01:22,982 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:01:22,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2019-09-20 13:01:22,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1298fb699/ea35fa8766e54c31b58b47b99906c328/FLAG82f968682 [2019-09-20 13:01:23,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1298fb699/ea35fa8766e54c31b58b47b99906c328 [2019-09-20 13:01:23,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:01:23,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:01:23,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:23,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:01:23,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:01:23,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2686e1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23, skipping insertion in model container [2019-09-20 13:01:23,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,435 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:01:23,451 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:01:23,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:23,645 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:01:23,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:23,679 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:01:23,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23 WrapperNode [2019-09-20 13:01:23,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:23,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:01:23,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:01:23,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:01:23,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... [2019-09-20 13:01:23,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:01:23,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:01:23,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:01:23,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:01:23,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:01:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:01:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:01:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-20 13:01:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-20 13:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:01:24,097 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:01:24,098 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:01:24,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:24 BoogieIcfgContainer [2019-09-20 13:01:24,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:01:24,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:01:24,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:01:24,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:01:24,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:01:23" (1/3) ... [2019-09-20 13:01:24,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d875b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:24, skipping insertion in model container [2019-09-20 13:01:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:23" (2/3) ... [2019-09-20 13:01:24,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d875b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:24, skipping insertion in model container [2019-09-20 13:01:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:24" (3/3) ... [2019-09-20 13:01:24,107 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2019-09-20 13:01:24,115 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:01:24,121 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:01:24,135 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:01:24,164 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:01:24,165 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:01:24,165 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:01:24,165 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:01:24,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:01:24,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:01:24,166 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:01:24,166 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:01:24,166 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:01:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-09-20 13:01:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-09-20 13:01:24,190 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:24,191 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:24,193 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:24,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:24,199 INFO L82 PathProgramCache]: Analyzing trace with hash 676687463, now seen corresponding path program 1 times [2019-09-20 13:01:24,201 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:24,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:24,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:24,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:24,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:24,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:24,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:01:24,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:01:24,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:01:24,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:01:24,371 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-09-20 13:01:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:24,451 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-09-20 13:01:24,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:01:24,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-09-20 13:01:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:24,463 INFO L225 Difference]: With dead ends: 30 [2019-09-20 13:01:24,463 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 13:01:24,467 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:01:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 13:01:24,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-09-20 13:01:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-20 13:01:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-20 13:01:24,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-09-20 13:01:24,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:24,516 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-20 13:01:24,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:01:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-20 13:01:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:01:24,517 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:24,518 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:24,518 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:24,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1754257002, now seen corresponding path program 1 times [2019-09-20 13:01:24,519 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:24,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:24,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:24,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:24,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:24,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:24,572 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-09-20 13:01:24,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:24,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 13:01:24,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:24,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:24,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-09-20 13:01:24,649 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:01:24,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:01:24,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:01:24,650 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-09-20 13:01:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:24,690 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-09-20 13:01:24,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:01:24,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-20 13:01:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:24,691 INFO L225 Difference]: With dead ends: 18 [2019-09-20 13:01:24,692 INFO L226 Difference]: Without dead ends: 15 [2019-09-20 13:01:24,693 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:01:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-20 13:01:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-09-20 13:01:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 13:01:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-20 13:01:24,698 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-09-20 13:01:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:24,699 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-20 13:01:24,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:01:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-20 13:01:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:01:24,700 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:24,700 INFO L407 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:24,700 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2083501651, now seen corresponding path program 2 times [2019-09-20 13:01:24,701 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:24,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:24,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:24,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:24,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 13:01:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 13:01:24,737 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-20 13:01:24,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:01:24 BoogieIcfgContainer [2019-09-20 13:01:24,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:01:24,758 INFO L168 Benchmark]: Toolchain (without parser) took 1339.94 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 86.5 MB in the beginning and 130.4 MB in the end (delta: -43.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:24,759 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:01:24,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.15 ms. Allocated memory is still 138.4 MB. Free memory was 86.3 MB in the beginning and 76.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:24,761 INFO L168 Benchmark]: Boogie Preprocessor took 154.45 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 76.8 MB in the beginning and 178.8 MB in the end (delta: -101.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:24,762 INFO L168 Benchmark]: RCFGBuilder took 263.63 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 167.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:24,763 INFO L168 Benchmark]: TraceAbstraction took 655.01 ms. Allocated memory is still 200.8 MB. Free memory was 167.1 MB in the beginning and 130.4 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:24,767 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.15 ms. Allocated memory is still 138.4 MB. Free memory was 86.3 MB in the beginning and 76.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.45 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 76.8 MB in the beginning and 178.8 MB in the end (delta: -101.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.63 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 167.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 655.01 ms. Allocated memory is still 200.8 MB. Free memory was 167.1 MB in the beginning and 130.4 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; VAL [i=0] [L13] COND TRUE i<5 [L14] i++ VAL [i=1] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L13] COND TRUE i<5 [L14] i++ VAL [i=2] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L13] COND TRUE i<5 [L14] i++ VAL [i=3] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=3] [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 38 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...