/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:59:40,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:59:40,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:59:40,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:59:40,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:59:40,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:59:40,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:59:40,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:59:40,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:59:40,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:59:40,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:59:40,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:59:40,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:59:40,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:59:40,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:59:40,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:59:40,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:59:40,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 23:59:40,176 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:59:40,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:59:40,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:59:40,179 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:59:40,179 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:59:40,180 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:59:40,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:59:40,180 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:59:40,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:59:40,180 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:59:40,181 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:59:40,181 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:59:40,181 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:59:40,181 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:59:40,181 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:59:40,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:59:40,182 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:59:40,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:59:40,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:59:40,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:59:40,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:59:40,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:59:40,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:59:40,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:59:40,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:59:40,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:59:40,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:59:40,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:59:40,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:59:40,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:59:40,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:59:40,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:59:40,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:59:40,187 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:59:40,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:59:40,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:59:40,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:59:40,188 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:59:40,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:59:40,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:59:40,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:59:40,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:59:40,496 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:59:40,497 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2019-11-23 23:59:40,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39be54190/0aeb84c356b04b34bffe11e2d6567631/FLAGeaba02fde [2019-11-23 23:59:41,191 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:59:41,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2019-11-23 23:59:41,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39be54190/0aeb84c356b04b34bffe11e2d6567631/FLAGeaba02fde [2019-11-23 23:59:41,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39be54190/0aeb84c356b04b34bffe11e2d6567631 [2019-11-23 23:59:41,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:59:41,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:59:41,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:59:41,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:59:41,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:59:41,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:59:41" (1/1) ... [2019-11-23 23:59:41,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8c8d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:41, skipping insertion in model container [2019-11-23 23:59:41,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:59:41" (1/1) ... [2019-11-23 23:59:41,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:59:41,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:59:42,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:59:42,174 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:59:42,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:59:42,456 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:59:42,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42 WrapperNode [2019-11-23 23:59:42,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:59:42,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:59:42,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:59:42,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:59:42,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:59:42,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:59:42,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:59:42,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:59:42,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (1/1) ... [2019-11-23 23:59:42,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:59:42,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:59:42,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:59:42,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:59:42,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (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 23:59:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:59:42,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 00:01:24,047 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 00:01:24,047 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 00:01:24,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:24 BoogieIcfgContainer [2019-11-24 00:01:24,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 00:01:24,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 00:01:24,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 00:01:24,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 00:01:24,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:59:41" (1/3) ... [2019-11-24 00:01:24,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bd27ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:01:24, skipping insertion in model container [2019-11-24 00:01:24,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:59:42" (2/3) ... [2019-11-24 00:01:24,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bd27ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:01:24, skipping insertion in model container [2019-11-24 00:01:24,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:24" (3/3) ... [2019-11-24 00:01:24,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label47.c [2019-11-24 00:01:24,062 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 00:01:24,068 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 00:01:24,078 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 00:01:24,099 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 00:01:24,099 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 00:01:24,099 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 00:01:24,099 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 00:01:24,100 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 00:01:24,100 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 00:01:24,100 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 00:01:24,100 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 00:01:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-24 00:01:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 00:01:24,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:01:24,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 00:01:24,117 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:01:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:01:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1169215411, now seen corresponding path program 1 times [2019-11-24 00:01:24,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:01:24,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780972028] [2019-11-24 00:01:24,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:01:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:01:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:01:24,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780972028] [2019-11-24 00:01:24,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:01:24,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 00:01:24,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366169925] [2019-11-24 00:01:24,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 00:01:24,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:01:24,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 00:01:24,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 00:01:24,343 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-24 00:01:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:01:24,558 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2019-11-24 00:01:24,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 00:01:24,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-24 00:01:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:01:24,573 INFO L225 Difference]: With dead ends: 23 [2019-11-24 00:01:24,573 INFO L226 Difference]: Without dead ends: 11 [2019-11-24 00:01:24,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 00:01:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-24 00:01:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-24 00:01:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-24 00:01:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-24 00:01:24,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2019-11-24 00:01:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:01:24,624 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-24 00:01:24,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 00:01:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-24 00:01:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 00:01:24,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:01:24,625 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-24 00:01:24,625 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:01:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:01:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1265557325, now seen corresponding path program 1 times [2019-11-24 00:01:24,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:01:24,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151600153] [2019-11-24 00:01:24,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:01:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:01:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:01:25,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151600153] [2019-11-24 00:01:25,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546545413] [2019-11-24 00:01:25,608 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 [2019-11-24 00:01:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:01:25,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-24 00:01:25,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 00:01:25,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:25,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:25,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:25,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 00:01:26,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:01:26,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-24 00:01:26,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms