/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/xor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:13:36,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:13:36,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:13:36,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:13:36,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:13:36,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:13:36,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:13:36,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:13:36,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:13:36,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:13:36,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:13:36,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:13:36,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:13:36,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:13:36,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:13:36,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:13:36,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:13:36,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:13:36,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:13:36,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:13:36,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:13:36,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:13:36,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:13:36,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:13:36,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:13:36,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:13:36,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:13:36,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:13:36,986 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 [2019-11-23 20:13:37,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:13:37,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:13:37,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:13:37,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:13:37,012 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:13:37,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:13:37,013 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:13:37,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:13:37,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:13:37,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:13:37,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:13:37,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:13:37,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:13:37,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:13:37,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:13:37,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:13:37,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:13:37,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:13:37,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:13:37,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:13:37,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:13:37,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:13:37,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:13:37,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:13:37,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:13:37,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:13:37,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:13:37,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:13:37,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:13:37,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:13:37,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:13:37,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:13:37,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:13:37,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:13:37,342 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:13:37,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i [2019-11-23 20:13:37,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecbf2a13/e5dc2997834542fb97a0383f8f919951/FLAGbbb34bf97 [2019-11-23 20:13:37,836 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:13:37,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i [2019-11-23 20:13:37,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecbf2a13/e5dc2997834542fb97a0383f8f919951/FLAGbbb34bf97 [2019-11-23 20:13:38,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecbf2a13/e5dc2997834542fb97a0383f8f919951 [2019-11-23 20:13:38,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:13:38,249 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:13:38,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:13:38,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:13:38,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:13:38,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44962956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38, skipping insertion in model container [2019-11-23 20:13:38,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:13:38,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:13:38,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:13:38,508 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:13:38,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:13:38,544 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:13:38,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38 WrapperNode [2019-11-23 20:13:38,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:13:38,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:13:38,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:13:38,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:13:38,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:13:38,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:13:38,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:13:38,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:13:38,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (1/1) ... [2019-11-23 20:13:38,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:13:38,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:13:38,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:13:38,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:13:38,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (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 [2019-11-23 20:13:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:13:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:13:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:13:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:13:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:13:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:13:39,115 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:13:39,115 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 20:13:39,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:13:39 BoogieIcfgContainer [2019-11-23 20:13:39,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:13:39,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:13:39,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:13:39,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:13:39,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:13:38" (1/3) ... [2019-11-23 20:13:39,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c6c5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:13:39, skipping insertion in model container [2019-11-23 20:13:39,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:38" (2/3) ... [2019-11-23 20:13:39,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c6c5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:13:39, skipping insertion in model container [2019-11-23 20:13:39,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:13:39" (3/3) ... [2019-11-23 20:13:39,124 INFO L109 eAbstractionObserver]: Analyzing ICFG xor5.i [2019-11-23 20:13:39,134 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:13:39,140 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:13:39,151 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:13:39,171 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:13:39,171 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:13:39,172 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:13:39,172 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:13:39,172 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:13:39,172 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:13:39,172 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:13:39,172 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:13:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-23 20:13:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 20:13:39,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:39,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:39,194 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2019-11-23 20:13:39,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:39,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567957513] [2019-11-23 20:13:39,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:13:39,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567957513] [2019-11-23 20:13:39,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:39,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:13:39,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576332384] [2019-11-23 20:13:39,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:13:39,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:39,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:13:39,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:13:39,370 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-23 20:13:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:39,392 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2019-11-23 20:13:39,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:13:39,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-23 20:13:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:39,405 INFO L225 Difference]: With dead ends: 53 [2019-11-23 20:13:39,405 INFO L226 Difference]: Without dead ends: 24 [2019-11-23 20:13:39,409 INFO L630 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 [2019-11-23 20:13:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-23 20:13:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-23 20:13:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 20:13:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-23 20:13:39,457 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2019-11-23 20:13:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:39,458 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-23 20:13:39,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:13:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-23 20:13:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 20:13:39,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:39,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:39,460 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2019-11-23 20:13:39,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:39,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421634064] [2019-11-23 20:13:39,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:13:39,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421634064] [2019-11-23 20:13:39,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:39,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:13:39,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758553578] [2019-11-23 20:13:39,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:13:39,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:39,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:13:39,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:13:39,649 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-11-23 20:13:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:39,742 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2019-11-23 20:13:39,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:13:39,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-23 20:13:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:39,744 INFO L225 Difference]: With dead ends: 45 [2019-11-23 20:13:39,744 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 20:13:39,745 INFO L630 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 [2019-11-23 20:13:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 20:13:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-23 20:13:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 20:13:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-23 20:13:39,752 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2019-11-23 20:13:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:39,752 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-23 20:13:39,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:13:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-23 20:13:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-23 20:13:39,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:39,753 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:39,754 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2143387046, now seen corresponding path program 1 times [2019-11-23 20:13:39,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:39,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440874181] [2019-11-23 20:13:39,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:13:39,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440874181] [2019-11-23 20:13:39,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:39,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:13:39,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28388103] [2019-11-23 20:13:39,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:13:39,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:13:39,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:13:39,837 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2019-11-23 20:13:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:39,906 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2019-11-23 20:13:39,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:13:39,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-11-23 20:13:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:39,908 INFO L225 Difference]: With dead ends: 47 [2019-11-23 20:13:39,908 INFO L226 Difference]: Without dead ends: 31 [2019-11-23 20:13:39,909 INFO L630 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 [2019-11-23 20:13:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-23 20:13:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2019-11-23 20:13:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-23 20:13:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-23 20:13:39,915 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2019-11-23 20:13:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:39,915 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-23 20:13:39,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:13:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-23 20:13:39,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-23 20:13:39,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:39,917 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:39,917 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:39,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:39,918 INFO L82 PathProgramCache]: Analyzing trace with hash 46775620, now seen corresponding path program 1 times [2019-11-23 20:13:39,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:39,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023878001] [2019-11-23 20:13:39,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:13:40,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023878001] [2019-11-23 20:13:40,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:40,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:13:40,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625203806] [2019-11-23 20:13:40,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:13:40,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:13:40,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:13:40,009 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2019-11-23 20:13:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:40,068 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-11-23 20:13:40,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:13:40,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-23 20:13:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:40,070 INFO L225 Difference]: With dead ends: 39 [2019-11-23 20:13:40,070 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 20:13:40,071 INFO L630 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 [2019-11-23 20:13:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 20:13:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-11-23 20:13:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-23 20:13:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-23 20:13:40,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 26 [2019-11-23 20:13:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:40,078 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-23 20:13:40,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:13:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-23 20:13:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 20:13:40,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:40,079 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:40,079 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash -548779230, now seen corresponding path program 1 times [2019-11-23 20:13:40,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:40,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134231128] [2019-11-23 20:13:40,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:13:40,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134231128] [2019-11-23 20:13:40,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239822944] [2019-11-23 20:13:40,158 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 [2019-11-23 20:13:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:40,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:13:40,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:13:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:13:40,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:13:40,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-23 20:13:40,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534986501] [2019-11-23 20:13:40,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 20:13:40,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:40,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 20:13:40,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:13:40,313 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2019-11-23 20:13:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:40,387 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-11-23 20:13:40,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:13:40,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-11-23 20:13:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:40,392 INFO L225 Difference]: With dead ends: 55 [2019-11-23 20:13:40,392 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 20:13:40,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:13:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 20:13:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-23 20:13:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-23 20:13:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-23 20:13:40,402 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 28 [2019-11-23 20:13:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:40,403 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-23 20:13:40,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 20:13:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-23 20:13:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-23 20:13:40,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:40,405 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-11-23 20:13:40,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:13:40,611 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:40,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 2 times [2019-11-23 20:13:40,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:40,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667293248] [2019-11-23 20:13:40,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 20:13:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 20:13:40,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-23 20:13:40,813 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-23 20:13:40,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:13:40 BoogieIcfgContainer [2019-11-23 20:13:40,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 20:13:40,880 INFO L168 Benchmark]: Toolchain (without parser) took 2629.91 ms. Allocated memory was 137.9 MB in the beginning and 232.8 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 179.3 MB in the end (delta: -76.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,881 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.67 ms. Allocated memory is still 137.9 MB. Free memory was 102.2 MB in the beginning and 91.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.23 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 178.2 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,886 INFO L168 Benchmark]: Boogie Preprocessor took 31.40 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 176.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,887 INFO L168 Benchmark]: RCFGBuilder took 409.92 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 158.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,887 INFO L168 Benchmark]: TraceAbstraction took 1759.04 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 158.1 MB in the beginning and 179.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-11-23 20:13:40,892 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.67 ms. Allocated memory is still 137.9 MB. Free memory was 102.2 MB in the beginning and 91.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 129.23 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 178.2 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.40 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 176.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.92 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 158.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1759.04 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 158.1 MB in the beginning and 179.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 10.8 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 [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 [N=2] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [N=2] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [N=2] [L29] COND FALSE !(i < N) VAL [N=2] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [N=2] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res ^ x[i] [L13] i++ VAL [N=2] [L13] COND FALSE !(i < N) VAL [N=2] [L16] return res; VAL [N=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 [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [N=2] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res ^ x[i] [L13] i++ VAL [N=2] [L13] COND FALSE !(i < N) VAL [N=2] [L16] return res; VAL [N=2] [L37] ret2 = xor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; VAL [N=2] [L39] COND TRUE i