java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:44:23,898 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:44:23,900 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:44:23,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:44:23,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:44:23,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:44:23,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:44:23,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:44:23,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:44:23,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:44:23,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:44:23,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:44:23,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:44:23,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:44:23,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:44:23,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:44:23,926 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:44:23,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:44:23,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:44:23,939 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:44:23,940 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:44:23,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:44:23,945 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:44:23,962 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:44:23,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:44:23,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:44:23,992 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:44:23,992 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:44:23,992 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:44:23,993 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:44:23,993 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:44:23,993 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:44:23,993 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:44:23,993 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:44:23,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:44:23,994 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:44:23,994 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:44:23,994 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:44:23,994 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:44:23,995 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:44:23,995 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:44:23,995 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:44:23,995 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:44:23,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:44:23,996 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:44:23,996 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:44:23,996 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:44:23,996 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:44:23,996 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:44:23,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:44:23,997 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:44:23,997 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:44:24,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:44:24,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:44:24,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:44:24,076 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:44:24,076 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:44:24,078 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c [2018-10-24 14:44:24,153 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9598624b7/9810c9ed42294fac89413a420e2f6728/FLAGa234a5326 [2018-10-24 14:44:25,059 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:44:25,059 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c [2018-10-24 14:44:25,122 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9598624b7/9810c9ed42294fac89413a420e2f6728/FLAGa234a5326 [2018-10-24 14:44:25,137 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9598624b7/9810c9ed42294fac89413a420e2f6728 [2018-10-24 14:44:25,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:44:25,150 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:44:25,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:44:25,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:44:25,157 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:44:25,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:44:25" (1/1) ... [2018-10-24 14:44:25,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4a3aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:25, skipping insertion in model container [2018-10-24 14:44:25,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:44:25" (1/1) ... [2018-10-24 14:44:25,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:44:25,425 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:44:27,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:44:27,471 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:44:28,687 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:44:28,741 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:44:28,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28 WrapperNode [2018-10-24 14:44:28,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:44:28,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:44:28,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:44:28,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:44:28,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:28,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:29,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:44:29,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:44:29,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:44:29,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:44:29,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:29,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:30,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:30,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:30,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:30,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:30,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... [2018-10-24 14:44:30,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:44:30,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:44:30,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:44:30,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:44:30,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 14:44:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:44:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:44:30,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:44:47,769 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:44:47,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:44:47 BoogieIcfgContainer [2018-10-24 14:44:47,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:44:47,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:44:47,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:44:47,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:44:47,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:44:25" (1/3) ... [2018-10-24 14:44:47,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef5399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:44:47, skipping insertion in model container [2018-10-24 14:44:47,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28" (2/3) ... [2018-10-24 14:44:47,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef5399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:44:47, skipping insertion in model container [2018-10-24 14:44:47,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:44:47" (3/3) ... [2018-10-24 14:44:47,779 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label28_false-unreach-call.c [2018-10-24 14:44:47,789 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:44:47,799 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:44:47,814 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:44:48,159 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:44:48,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:44:48,160 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:44:48,160 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:44:48,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:44:48,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:44:48,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:44:48,161 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:44:48,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:44:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 14:44:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 14:44:48,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:48,225 INFO L375 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] [2018-10-24 14:44:48,228 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:48,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-10-24 14:44:48,240 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:48,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:48,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:48,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:48,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:44:48,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:48,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:44:48,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:44:48,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:44:48,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:48,594 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 14:45:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:45:12,306 INFO L93 Difference]: Finished difference Result 6326 states and 12083 transitions. [2018-10-24 14:45:12,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:45:12,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-24 14:45:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:45:12,369 INFO L225 Difference]: With dead ends: 6326 [2018-10-24 14:45:12,369 INFO L226 Difference]: Without dead ends: 4570 [2018-10-24 14:45:12,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:45:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-24 14:45:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4565. [2018-10-24 14:45:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2018-10-24 14:45:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 7758 transitions. [2018-10-24 14:45:12,587 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 7758 transitions. Word has length 24 [2018-10-24 14:45:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:45:12,588 INFO L481 AbstractCegarLoop]: Abstraction has 4565 states and 7758 transitions. [2018-10-24 14:45:12,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:45:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 7758 transitions. [2018-10-24 14:45:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 14:45:12,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:45:12,593 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:45:12,594 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:45:12,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:45:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash 970556492, now seen corresponding path program 1 times [2018-10-24 14:45:12,594 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:45:12,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:45:12,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:12,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:12,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:45:13,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:45:13,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:45:13,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:45:13,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:45:13,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:45:13,123 INFO L87 Difference]: Start difference. First operand 4565 states and 7758 transitions. Second operand 4 states. [2018-10-24 14:45:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:45:34,639 INFO L93 Difference]: Finished difference Result 17445 states and 29978 transitions. [2018-10-24 14:45:34,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:45:34,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-24 14:45:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:45:34,704 INFO L225 Difference]: With dead ends: 17445 [2018-10-24 14:45:34,705 INFO L226 Difference]: Without dead ends: 12882 [2018-10-24 14:45:34,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:45:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12882 states. [2018-10-24 14:45:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12882 to 12843. [2018-10-24 14:45:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12843 states. [2018-10-24 14:45:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12843 states to 12843 states and 18655 transitions. [2018-10-24 14:45:34,959 INFO L78 Accepts]: Start accepts. Automaton has 12843 states and 18655 transitions. Word has length 110 [2018-10-24 14:45:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:45:34,960 INFO L481 AbstractCegarLoop]: Abstraction has 12843 states and 18655 transitions. [2018-10-24 14:45:34,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:45:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 12843 states and 18655 transitions. [2018-10-24 14:45:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 14:45:34,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:45:34,969 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2018-10-24 14:45:34,970 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:45:34,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:45:34,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1024895327, now seen corresponding path program 1 times [2018-10-24 14:45:34,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:45:34,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:45:34,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:34,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:34,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:45:35,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:45:35,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:45:35,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:45:35,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:45:35,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:45:35,329 INFO L87 Difference]: Start difference. First operand 12843 states and 18655 transitions. Second operand 4 states. [2018-10-24 14:45:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:45:53,855 INFO L93 Difference]: Finished difference Result 50585 states and 73613 transitions. [2018-10-24 14:45:53,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:45:53,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-10-24 14:45:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:45:53,969 INFO L225 Difference]: With dead ends: 50585 [2018-10-24 14:45:53,970 INFO L226 Difference]: Without dead ends: 37744 [2018-10-24 14:45:53,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:45:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37744 states. [2018-10-24 14:45:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37744 to 37729. [2018-10-24 14:45:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37729 states. [2018-10-24 14:45:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37729 states to 37729 states and 48555 transitions. [2018-10-24 14:45:54,506 INFO L78 Accepts]: Start accepts. Automaton has 37729 states and 48555 transitions. Word has length 155 [2018-10-24 14:45:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:45:54,508 INFO L481 AbstractCegarLoop]: Abstraction has 37729 states and 48555 transitions. [2018-10-24 14:45:54,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:45:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 37729 states and 48555 transitions. [2018-10-24 14:45:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 14:45:54,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:45:54,517 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:45:54,517 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:45:54,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:45:54,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2025339405, now seen corresponding path program 1 times [2018-10-24 14:45:54,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:45:54,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:45:54,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:54,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:54,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:54,843 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:45:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-24 14:45:54,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:45:54,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:45:54,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:45:54,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:45:54,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:45:54,883 INFO L87 Difference]: Start difference. First operand 37729 states and 48555 transitions. Second operand 4 states. [2018-10-24 14:46:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:46:18,822 INFO L93 Difference]: Finished difference Result 148197 states and 190720 transitions. [2018-10-24 14:46:18,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:46:18,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2018-10-24 14:46:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:46:19,037 INFO L225 Difference]: With dead ends: 148197 [2018-10-24 14:46:19,037 INFO L226 Difference]: Without dead ends: 110470 [2018-10-24 14:46:19,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:46:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110470 states. [2018-10-24 14:46:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110470 to 73242. [2018-10-24 14:46:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73242 states. [2018-10-24 14:46:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73242 states to 73242 states and 91459 transitions. [2018-10-24 14:46:20,022 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 91459 transitions. Word has length 171 [2018-10-24 14:46:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:46:20,022 INFO L481 AbstractCegarLoop]: Abstraction has 73242 states and 91459 transitions. [2018-10-24 14:46:20,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:46:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 91459 transitions. [2018-10-24 14:46:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-24 14:46:20,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:46:20,028 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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] [2018-10-24 14:46:20,028 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:46:20,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:46:20,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2033473440, now seen corresponding path program 1 times [2018-10-24 14:46:20,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:46:20,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:46:20,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:20,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:46:20,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:46:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-24 14:46:20,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:46:20,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:46:20,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:46:20,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:46:20,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:46:20,502 INFO L87 Difference]: Start difference. First operand 73242 states and 91459 transitions. Second operand 4 states. [2018-10-24 14:46:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:46:37,426 INFO L93 Difference]: Finished difference Result 169710 states and 209698 transitions. [2018-10-24 14:46:37,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:46:37,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-10-24 14:46:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:46:37,543 INFO L225 Difference]: With dead ends: 169710 [2018-10-24 14:46:37,543 INFO L226 Difference]: Without dead ends: 96470 [2018-10-24 14:46:37,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:46:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96470 states. [2018-10-24 14:46:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96470 to 96461. [2018-10-24 14:46:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96461 states. [2018-10-24 14:46:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96461 states to 96461 states and 113208 transitions. [2018-10-24 14:46:38,993 INFO L78 Accepts]: Start accepts. Automaton has 96461 states and 113208 transitions. Word has length 271 [2018-10-24 14:46:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:46:38,994 INFO L481 AbstractCegarLoop]: Abstraction has 96461 states and 113208 transitions. [2018-10-24 14:46:38,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:46:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 96461 states and 113208 transitions. [2018-10-24 14:46:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-10-24 14:46:39,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:46:39,014 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-10-24 14:46:39,015 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:46:39,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:46:39,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1909690267, now seen corresponding path program 1 times [2018-10-24 14:46:39,016 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:46:39,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:46:39,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:39,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:46:39,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:46:40,081 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 14:46:40,301 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-24 14:46:40,498 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-10-24 14:46:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-24 14:46:42,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:46:42,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 14:46:42,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:46:42,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:46:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:46:42,126 INFO L87 Difference]: Start difference. First operand 96461 states and 113208 transitions. Second operand 8 states. [2018-10-24 14:47:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:09,610 INFO L93 Difference]: Finished difference Result 267569 states and 314472 transitions. [2018-10-24 14:47:09,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:47:09,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 692 [2018-10-24 14:47:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:09,838 INFO L225 Difference]: With dead ends: 267569 [2018-10-24 14:47:09,838 INFO L226 Difference]: Without dead ends: 171110 [2018-10-24 14:47:09,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-24 14:47:10,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171110 states. [2018-10-24 14:47:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171110 to 97827. [2018-10-24 14:47:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97827 states. [2018-10-24 14:47:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97827 states to 97827 states and 114580 transitions. [2018-10-24 14:47:11,284 INFO L78 Accepts]: Start accepts. Automaton has 97827 states and 114580 transitions. Word has length 692 [2018-10-24 14:47:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:11,285 INFO L481 AbstractCegarLoop]: Abstraction has 97827 states and 114580 transitions. [2018-10-24 14:47:11,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:47:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 97827 states and 114580 transitions. [2018-10-24 14:47:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2018-10-24 14:47:11,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:11,323 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:47:11,323 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:11,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1566156931, now seen corresponding path program 1 times [2018-10-24 14:47:11,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:11,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:11,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:11,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:11,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:12,353 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 14:47:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 44 proven. 394 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 14:47:14,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:47:14,649 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 14:47:14,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:14,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:47:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-24 14:47:15,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:47:15,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-24 14:47:15,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:47:15,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:47:15,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:47:15,996 INFO L87 Difference]: Start difference. First operand 97827 states and 114580 transitions. Second operand 10 states. [2018-10-24 14:47:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:58,584 INFO L93 Difference]: Finished difference Result 387691 states and 455646 transitions. [2018-10-24 14:47:58,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 14:47:58,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 906 [2018-10-24 14:47:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:59,187 INFO L225 Difference]: With dead ends: 387691 [2018-10-24 14:47:59,187 INFO L226 Difference]: Without dead ends: 291232 [2018-10-24 14:47:59,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 917 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-10-24 14:47:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291232 states. [2018-10-24 14:48:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291232 to 241280. [2018-10-24 14:48:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241280 states. [2018-10-24 14:48:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241280 states to 241280 states and 275259 transitions. [2018-10-24 14:48:04,033 INFO L78 Accepts]: Start accepts. Automaton has 241280 states and 275259 transitions. Word has length 906 [2018-10-24 14:48:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:04,034 INFO L481 AbstractCegarLoop]: Abstraction has 241280 states and 275259 transitions. [2018-10-24 14:48:04,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:48:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 241280 states and 275259 transitions. [2018-10-24 14:48:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2018-10-24 14:48:04,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:04,072 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-10-24 14:48:04,073 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:04,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1395976009, now seen corresponding path program 1 times [2018-10-24 14:48:04,074 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:04,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:04,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 585 proven. 4 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2018-10-24 14:48:07,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:48:07,484 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:48:07,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:07,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:48:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-24 14:48:08,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:48:08,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:48:08,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:48:08,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:48:08,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:48:08,754 INFO L87 Difference]: Start difference. First operand 241280 states and 275259 transitions. Second operand 6 states. Received shutdown request... [2018-10-24 14:48:18,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:48:18,228 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:48:18,234 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:48:18,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:48:18 BoogieIcfgContainer [2018-10-24 14:48:18,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:48:18,235 INFO L168 Benchmark]: Toolchain (without parser) took 233086.72 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -265.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 14:48:18,237 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:48:18,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3591.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 393.7 MB). Peak memory consumption was 393.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:48:18,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 1151.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.2 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:48:18,240 INFO L168 Benchmark]: Boogie Preprocessor took 839.33 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:48:18,241 INFO L168 Benchmark]: RCFGBuilder took 17035.87 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 270.5 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 521.0 MB). Peak memory consumption was 791.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:48:18,245 INFO L168 Benchmark]: TraceAbstraction took 210463.68 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 990.4 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -150.5 MB). Peak memory consumption was 839.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:48:18,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3591.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 393.7 MB). Peak memory consumption was 393.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1151.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.2 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 839.33 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17035.87 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 270.5 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 521.0 MB). Peak memory consumption was 791.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210463.68 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 990.4 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -150.5 MB). Peak memory consumption was 839.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (241280states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (48275 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 210.0s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 185.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10457 SDtfs, 44483 SDslu, 14562 SDs, 0 SdLazy, 83759 SolverSat, 19247 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 156.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2093 GetRequests, 2035 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241280occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 160531 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 5459 NumberOfCodeBlocks, 5459 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5449 ConstructedInterpolants, 0 QuantifiedInterpolants, 19762265 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2334 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 3123/3521 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown