/usr/bin/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/array-crafted/xor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 18:37:08,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 18:37:08,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 18:37:08,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 18:37:08,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 18:37:08,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 18:37:08,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 18:37:08,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 18:37:08,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 18:37:08,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 18:37:08,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 18:37:08,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 18:37:08,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 18:37:08,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 18:37:08,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 18:37:08,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 18:37:08,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 18:37:08,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 18:37:08,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 18:37:08,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 18:37:08,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 18:37:08,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 18:37:08,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 18:37:08,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 18:37:08,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 18:37:08,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 18:37:08,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 18:37:08,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 18:37:08,790 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 [2019-11-06 18:37:08,815 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 18:37:08,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 18:37:08,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 18:37:08,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 18:37:08,817 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 18:37:08,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 18:37:08,817 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 18:37:08,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 18:37:08,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 18:37:08,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 18:37:08,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 18:37:08,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 18:37:08,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 18:37:08,821 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 18:37:08,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 18:37:08,821 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 18:37:08,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 18:37:08,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 18:37:08,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 18:37:08,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 18:37:08,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 18:37:08,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 18:37:08,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 18:37:08,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 18:37:08,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 18:37:08,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 18:37:08,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 18:37:08,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 18:37:08,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 18:37:09,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 18:37:09,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 18:37:09,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 18:37:09,119 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 18:37:09,120 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 18:37:09,121 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i [2019-11-06 18:37:09,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16df5ac98/798e562f45244ccdb03929f1844c3f07/FLAG13228b33b [2019-11-06 18:37:09,670 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 18:37:09,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i [2019-11-06 18:37:09,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16df5ac98/798e562f45244ccdb03929f1844c3f07/FLAG13228b33b [2019-11-06 18:37:10,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16df5ac98/798e562f45244ccdb03929f1844c3f07 [2019-11-06 18:37:10,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 18:37:10,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 18:37:10,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 18:37:10,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 18:37:10,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 18:37:10,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63143998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10, skipping insertion in model container [2019-11-06 18:37:10,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 18:37:10,122 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 18:37:10,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 18:37:10,335 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 18:37:10,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 18:37:10,478 INFO L192 MainTranslator]: Completed translation [2019-11-06 18:37:10,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10 WrapperNode [2019-11-06 18:37:10,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 18:37:10,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 18:37:10,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 18:37:10,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 18:37:10,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (1/1) ... [2019-11-06 18:37:10,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 18:37:10,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 18:37:10,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 18:37:10,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 18:37:10,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (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 [2019-11-06 18:37:10,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 18:37:10,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 18:37:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2019-11-06 18:37:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 18:37:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 18:37:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 18:37:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2019-11-06 18:37:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 18:37:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 18:37:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 18:37:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 18:37:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 18:37:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 18:37:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 18:37:10,875 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 18:37:10,875 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 18:37:10,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:37:10 BoogieIcfgContainer [2019-11-06 18:37:10,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 18:37:10,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 18:37:10,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 18:37:10,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 18:37:10,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:37:10" (1/3) ... [2019-11-06 18:37:10,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa82813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:37:10, skipping insertion in model container [2019-11-06 18:37:10,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:10" (2/3) ... [2019-11-06 18:37:10,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa82813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:37:10, skipping insertion in model container [2019-11-06 18:37:10,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:37:10" (3/3) ... [2019-11-06 18:37:10,903 INFO L109 eAbstractionObserver]: Analyzing ICFG xor5.i [2019-11-06 18:37:10,914 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 18:37:10,924 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 18:37:10,934 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 18:37:10,954 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 18:37:10,954 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 18:37:10,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 18:37:10,955 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 18:37:10,955 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 18:37:10,955 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 18:37:10,955 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 18:37:10,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 18:37:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-06 18:37:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 18:37:10,976 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:37:10,977 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:37:10,979 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:37:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:37:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash 911672298, now seen corresponding path program 1 times [2019-11-06 18:37:10,990 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:37:10,991 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847382679] [2019-11-06 18:37:10,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:37:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 18:37:11,214 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847382679] [2019-11-06 18:37:11,215 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:37:11,216 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 18:37:11,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968116033] [2019-11-06 18:37:11,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 18:37:11,224 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:37:11,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 18:37:11,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 18:37:11,242 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-06 18:37:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:37:11,397 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-11-06 18:37:11,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 18:37:11,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-06 18:37:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:37:11,410 INFO L225 Difference]: With dead ends: 57 [2019-11-06 18:37:11,410 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 18:37:11,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 18:37:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 18:37:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-06 18:37:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 18:37:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-06 18:37:11,456 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-11-06 18:37:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:37:11,457 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-06 18:37:11,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 18:37:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-06 18:37:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 18:37:11,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:37:11,460 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:37:11,460 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:37:11,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:37:11,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1776857700, now seen corresponding path program 1 times [2019-11-06 18:37:11,461 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:37:11,462 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186554314] [2019-11-06 18:37:11,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:37:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 18:37:11,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186554314] [2019-11-06 18:37:11,661 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:37:11,661 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 18:37:11,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730086136] [2019-11-06 18:37:11,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 18:37:11,664 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:37:11,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 18:37:11,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 18:37:11,665 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-11-06 18:37:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:37:11,768 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-06 18:37:11,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 18:37:11,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-06 18:37:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:37:11,770 INFO L225 Difference]: With dead ends: 47 [2019-11-06 18:37:11,770 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 18:37:11,771 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 18:37:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 18:37:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-06 18:37:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 18:37:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-06 18:37:11,780 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-11-06 18:37:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:37:11,780 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-06 18:37:11,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 18:37:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-06 18:37:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-06 18:37:11,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:37:11,782 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:37:11,782 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:37:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:37:11,783 INFO L82 PathProgramCache]: Analyzing trace with hash -725304090, now seen corresponding path program 1 times [2019-11-06 18:37:11,783 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:37:11,784 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822218529] [2019-11-06 18:37:11,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:37:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 18:37:11,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822218529] [2019-11-06 18:37:11,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812794354] [2019-11-06 18:37:11,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:37:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 18:37:12,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:37:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 18:37:12,093 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:37:12,093 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-11-06 18:37:12,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873980396] [2019-11-06 18:37:12,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 18:37:12,094 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:37:12,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 18:37:12,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 18:37:12,095 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2019-11-06 18:37:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:37:12,324 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-06 18:37:12,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 18:37:12,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-06 18:37:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:37:12,325 INFO L225 Difference]: With dead ends: 51 [2019-11-06 18:37:12,326 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 18:37:12,326 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-06 18:37:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 18:37:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-11-06 18:37:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 18:37:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-06 18:37:12,334 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 35 [2019-11-06 18:37:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:37:12,335 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-06 18:37:12,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 18:37:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-06 18:37:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 18:37:12,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:37:12,337 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:37:12,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:37:12,553 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:37:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:37:12,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1245458630, now seen corresponding path program 1 times [2019-11-06 18:37:12,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:37:12,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534228318] [2019-11-06 18:37:12,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:37:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 18:37:12,711 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534228318] [2019-11-06 18:37:12,712 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828065612] [2019-11-06 18:37:12,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:37:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:37:12,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 18:37:12,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:37:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 18:37:12,810 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 18:37:12,810 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-11-06 18:37:12,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454254558] [2019-11-06 18:37:12,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 18:37:12,814 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:37:12,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 18:37:12,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 18:37:12,814 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2019-11-06 18:37:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:37:12,862 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-11-06 18:37:12,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 18:37:12,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-06 18:37:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:37:12,864 INFO L225 Difference]: With dead ends: 46 [2019-11-06 18:37:12,864 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 18:37:12,865 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 18:37:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 18:37:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-06 18:37:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 18:37:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-06 18:37:12,872 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2019-11-06 18:37:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:37:12,874 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-06 18:37:12,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 18:37:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-06 18:37:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-06 18:37:12,875 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:37:12,876 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:37:13,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:37:13,080 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:37:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:37:13,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1209882084, now seen corresponding path program 1 times [2019-11-06 18:37:13,081 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:37:13,082 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590132329] [2019-11-06 18:37:13,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:37:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 18:37:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 18:37:13,270 INFO L172 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-06 18:37:13,270 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-06 18:37:13,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:37:13 BoogieIcfgContainer [2019-11-06 18:37:13,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 18:37:13,361 INFO L168 Benchmark]: Toolchain (without parser) took 3271.25 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 102.2 MB in the beginning and 122.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2019-11-06 18:37:13,363 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-06 18:37:13,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 182.4 MB in the end (delta: -80.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-11-06 18:37:13,366 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 ms. Allocated memory is still 203.4 MB. Free memory was 182.4 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-11-06 18:37:13,371 INFO L168 Benchmark]: RCFGBuilder took 363.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 163.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-11-06 18:37:13,372 INFO L168 Benchmark]: TraceAbstraction took 2473.15 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 163.1 MB in the beginning and 122.4 MB in the end (delta: 40.7 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2019-11-06 18:37:13,383 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 182.4 MB in the end (delta: -80.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.70 ms. Allocated memory is still 203.4 MB. Free memory was 182.4 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 163.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2473.15 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 163.1 MB in the beginning and 122.4 MB in the end (delta: 40.7 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 14. Possible FailurePath: [L6] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; VAL [\old(N)=0, i=0, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=1, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}] [L29] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}] [L34] CALL, EXPR xor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res ^ x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L16] return res; VAL [\old(N)=0, \result=-2, i=2, N=2, res=4294967294, x={1:0}, x={1:0}] [L34] RET, EXPR xor(x) VAL [\old(N)=0, i=2, N=2, x={1:0}, xor(x)=-2] [L34] ret = xor(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp VAL [\old(N)=0, i=2, N=2, ret=-2, temp=0, x={1:0}] [L37] CALL, EXPR xor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res ^ x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L16] return res; VAL [\old(N)=0, \result=-3, i=2, N=2, res=4294967293, x={1:0}, x={1:0}] [L37] RET, EXPR xor(x) VAL [\old(N)=0, i=2, N=2, ret=-2, temp=0, x={1:0}, xor(x)=-3] [L37] ret2 = xor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; VAL [\old(N)=0, i=2, i=0, N=2, ret=-2, ret2=-3, temp=0, x={1:0}] [L39] COND TRUE i