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-fea9116 [2019-09-20 12:59:31,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:59:31,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:59:31,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:59:31,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:59:31,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:59:31,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:59:31,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:59:31,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:59:31,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:59:31,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:59:31,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:59:31,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:59:31,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:59:31,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:59:31,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:59:31,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:59:31,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:59:31,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:59:31,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:59:31,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:59:31,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:59:31,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:59:31,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:59:31,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:59:31,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 12:59:31,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 12:59:31,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 12:59:31,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 12:59:31,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 12:59:31,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 12:59:31,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 12:59:31,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 12:59:31,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:59:31,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:59:31,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:59:31,795 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 12:59:31,809 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:59:31,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:59:31,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:59:31,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:59:31,811 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:59:31,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:59:31,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:59:31,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:59:31,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:59:31,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:59:31,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:59:31,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:59:31,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:59:31,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:59:31,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:59:31,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:59:31,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:59:31,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:59:31,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:59:31,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:59:31,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:59:31,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:59:31,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:59:31,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:59:31,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:59:31,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:59:31,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:59:31,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:59:31,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:59:31,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:59:31,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:59:31,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:59:31,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:59:31,865 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:59:31,865 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i [2019-09-20 12:59:31,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18036352/065028ea095743c991f97345ea216e6c/FLAGe6c2cc07e [2019-09-20 12:59:32,364 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:59:32,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i [2019-09-20 12:59:32,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18036352/065028ea095743c991f97345ea216e6c/FLAGe6c2cc07e [2019-09-20 12:59:32,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18036352/065028ea095743c991f97345ea216e6c [2019-09-20 12:59:32,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:59:32,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:59:32,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:32,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:59:32,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:59:32,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:32" (1/1) ... [2019-09-20 12:59:32,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a49921e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:32, skipping insertion in model container [2019-09-20 12:59:32,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:32" (1/1) ... [2019-09-20 12:59:32,785 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:59:32,806 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:59:33,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:33,011 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:59:33,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:33,148 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:59:33,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33 WrapperNode [2019-09-20 12:59:33,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:33,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:59:33,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:59:33,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:59:33,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (1/1) ... [2019-09-20 12:59:33,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:59:33,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:59:33,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:59:33,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:59:33,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (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 12:59:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:59:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:59:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2019-09-20 12:59:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:59:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:59:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:59:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2019-09-20 12:59:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 12:59:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:59:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 12:59:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 12:59:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 12:59:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:59:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:59:33,669 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:59:33,669 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 12:59:33,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:33 BoogieIcfgContainer [2019-09-20 12:59:33,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:59:33,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:59:33,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:59:33,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:59:33,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:59:32" (1/3) ... [2019-09-20 12:59:33,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fb4e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:33, skipping insertion in model container [2019-09-20 12:59:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:33" (2/3) ... [2019-09-20 12:59:33,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fb4e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:33, skipping insertion in model container [2019-09-20 12:59:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:33" (3/3) ... [2019-09-20 12:59:33,678 INFO L109 eAbstractionObserver]: Analyzing ICFG xor5.i [2019-09-20 12:59:33,686 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:59:33,694 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:59:33,711 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:59:33,738 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:59:33,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:59:33,739 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:59:33,739 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:59:33,739 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:59:33,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:59:33,740 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:59:33,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:59:33,740 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:59:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-20 12:59:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 12:59:33,764 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:33,765 INFO L407 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] [2019-09-20 12:59:33,767 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash 911672298, now seen corresponding path program 1 times [2019-09-20 12:59:33,773 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:33,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:33,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:33,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:33,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 12:59:33,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:33,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:59:33,943 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:59:33,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:59:33,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:59:33,962 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-20 12:59:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:33,986 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-09-20 12:59:33,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:59:33,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-09-20 12:59:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:33,996 INFO L225 Difference]: With dead ends: 57 [2019-09-20 12:59:33,997 INFO L226 Difference]: Without dead ends: 27 [2019-09-20 12:59:34,000 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:59:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-20 12:59:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-20 12:59:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-20 12:59:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-20 12:59:34,042 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-09-20 12:59:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:34,043 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-20 12:59:34,043 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:59:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-20 12:59:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 12:59:34,045 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:34,046 INFO L407 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] [2019-09-20 12:59:34,046 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1776857700, now seen corresponding path program 1 times [2019-09-20 12:59:34,047 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:34,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:34,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:34,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 12:59:34,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:34,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 12:59:34,184 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 12:59:34,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 12:59:34,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:59:34,191 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-09-20 12:59:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:34,236 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-09-20 12:59:34,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 12:59:34,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-09-20 12:59:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:34,238 INFO L225 Difference]: With dead ends: 47 [2019-09-20 12:59:34,239 INFO L226 Difference]: Without dead ends: 29 [2019-09-20 12:59:34,240 INFO L636 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 [2019-09-20 12:59:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-20 12:59:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-09-20 12:59:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-20 12:59:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-20 12:59:34,248 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-09-20 12:59:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:34,248 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-20 12:59:34,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 12:59:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-20 12:59:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-20 12:59:34,250 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:34,250 INFO L407 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] [2019-09-20 12:59:34,251 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:34,251 INFO L82 PathProgramCache]: Analyzing trace with hash -725304090, now seen corresponding path program 1 times [2019-09-20 12:59:34,251 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:34,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:34,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:34,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-20 12:59:34,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:59:34,370 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 12:59:34,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:34,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 12:59:34,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:59:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 12:59:34,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:59:34,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-09-20 12:59:34,542 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 12:59:34,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 12:59:34,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 12:59:34,543 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2019-09-20 12:59:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:34,689 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-09-20 12:59:34,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 12:59:34,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-09-20 12:59:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:34,691 INFO L225 Difference]: With dead ends: 51 [2019-09-20 12:59:34,691 INFO L226 Difference]: Without dead ends: 33 [2019-09-20 12:59:34,692 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:59:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-20 12:59:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-09-20 12:59:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-20 12:59:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-09-20 12:59:34,700 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 35 [2019-09-20 12:59:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:34,701 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-09-20 12:59:34,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 12:59:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-09-20 12:59:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-20 12:59:34,703 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:34,703 INFO L407 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] [2019-09-20 12:59:34,704 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:34,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1245458630, now seen corresponding path program 1 times [2019-09-20 12:59:34,704 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:34,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:34,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:34,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-20 12:59:34,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:34,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 12:59:34,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 12:59:34,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 12:59:34,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 12:59:34,833 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2019-09-20 12:59:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:34,884 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-09-20 12:59:34,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 12:59:34,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-09-20 12:59:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:34,886 INFO L225 Difference]: With dead ends: 46 [2019-09-20 12:59:34,886 INFO L226 Difference]: Without dead ends: 33 [2019-09-20 12:59:34,887 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 12:59:34,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-20 12:59:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-09-20 12:59:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-20 12:59:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-09-20 12:59:34,895 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2019-09-20 12:59:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:34,897 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-09-20 12:59:34,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 12:59:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-09-20 12:59:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-20 12:59:34,899 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:34,899 INFO L407 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] [2019-09-20 12:59:34,900 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:34,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:34,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1209882084, now seen corresponding path program 1 times [2019-09-20 12:59:34,900 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:34,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:34,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:34,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:34,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 12:59:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 12:59:35,190 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-20 12:59:35,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:59:35 BoogieIcfgContainer [2019-09-20 12:59:35,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:59:35,280 INFO L168 Benchmark]: Toolchain (without parser) took 2514.53 ms. Allocated memory was 137.9 MB in the beginning and 219.2 MB in the end (delta: 81.3 MB). Free memory was 84.1 MB in the beginning and 177.4 MB in the end (delta: -93.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 12:59:35,282 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 102.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:59:35,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.87 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 83.9 MB in the beginning and 176.9 MB in the end (delta: -93.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:35,286 INFO L168 Benchmark]: Boogie Preprocessor took 58.11 ms. Allocated memory is still 198.7 MB. Free memory was 176.3 MB in the beginning and 174.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:35,287 INFO L168 Benchmark]: RCFGBuilder took 462.86 ms. Allocated memory is still 198.7 MB. Free memory was 174.0 MB in the beginning and 157.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:35,289 INFO L168 Benchmark]: TraceAbstraction took 1605.01 ms. Allocated memory was 198.7 MB in the beginning and 219.2 MB in the end (delta: 20.4 MB). Free memory was 157.3 MB in the beginning and 177.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 289.4 kB. Max. memory is 7.1 GB. [2019-09-20 12:59:35,298 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 102.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.87 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 83.9 MB in the beginning and 176.9 MB in the end (delta: -93.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.11 ms. Allocated memory is still 198.7 MB. Free memory was 176.3 MB in the beginning and 174.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.86 ms. Allocated memory is still 198.7 MB. Free memory was 174.0 MB in the beginning and 157.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1605.01 ms. Allocated memory was 198.7 MB in the beginning and 219.2 MB in the end (delta: 20.4 MB). Free memory was 157.3 MB in the beginning and 177.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 289.4 kB. 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=1, 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=0, i=2, N=2, res=0, x={1:0}, x={1:0}] [L34] RET, EXPR xor(x) VAL [\old(N)=0, i=2, N=2, x={1:0}, xor(x)=0] [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=0, temp=1, 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=-2, i=2, N=2, res=4294967294, x={1:0}, x={1:0}] [L37] RET, EXPR xor(x) VAL [\old(N)=0, i=2, N=2, ret=0, temp=1, x={1:0}, xor(x)=-2] [L37] ret2 = xor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; VAL [\old(N)=0, i=0, i=2, N=2, ret=0, ret2=-2, temp=0, x={1:0}] [L39] COND TRUE i