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_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:46:22,580 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:46:22,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:46:22,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:46:22,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:46:22,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:46:22,597 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:46:22,599 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:46:22,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:46:22,601 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:46:22,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:46:22,603 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:46:22,604 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:46:22,605 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:46:22,606 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:46:22,607 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:46:22,608 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:46:22,610 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:46:22,612 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:46:22,613 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:46:22,615 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:46:22,616 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:46:22,619 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:46:22,628 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 [2018-10-26 19:46:22,644 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:46:22,645 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:46:22,646 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:46:22,646 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:46:22,647 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:46:22,647 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:46:22,647 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:46:22,647 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:46:22,648 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:46:22,648 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:46:22,648 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:46:22,648 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:46:22,649 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:46:22,649 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:46:22,649 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:46:22,649 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:46:22,649 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:46:22,650 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:46:22,650 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:46:22,650 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:46:22,650 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:46:22,650 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:46:22,651 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:46:22,651 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:46:22,651 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:46:22,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:46:22,651 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:46:22,652 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:46:22,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:46:22,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:46:22,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:46:22,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:46:22,738 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:46:22,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label14_false-unreach-call.c [2018-10-26 19:46:22,803 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab6239f81/743687dde7954644878562dcf0b3088f/FLAG084f52789 [2018-10-26 19:46:23,686 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:46:23,687 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label14_false-unreach-call.c [2018-10-26 19:46:23,735 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab6239f81/743687dde7954644878562dcf0b3088f/FLAG084f52789 [2018-10-26 19:46:23,752 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab6239f81/743687dde7954644878562dcf0b3088f [2018-10-26 19:46:23,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:46:23,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:46:23,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:46:23,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:46:23,772 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:46:23,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:46:23" (1/1) ... [2018-10-26 19:46:23,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494263d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:23, skipping insertion in model container [2018-10-26 19:46:23,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:46:23" (1/1) ... [2018-10-26 19:46:23,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:46:24,025 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:46:26,103 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:46:26,108 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:46:27,124 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:46:27,179 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:46:27,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27 WrapperNode [2018-10-26 19:46:27,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:46:27,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:46:27,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:46:27,181 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:46:27,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:27,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:46:28,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:46:28,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:46:28,370 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:46:28,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:28,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (1/1) ... [2018-10-26 19:46:29,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:46:29,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:46:29,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:46:29,122 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:46:29,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (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 [2018-10-26 19:46:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:46:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:46:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:46:45,833 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:46:45,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:46:45 BoogieIcfgContainer [2018-10-26 19:46:45,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:46:45,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:46:45,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:46:45,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:46:45,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:46:23" (1/3) ... [2018-10-26 19:46:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d733d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:46:45, skipping insertion in model container [2018-10-26 19:46:45,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:27" (2/3) ... [2018-10-26 19:46:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d733d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:46:45, skipping insertion in model container [2018-10-26 19:46:45,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:46:45" (3/3) ... [2018-10-26 19:46:45,844 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label14_false-unreach-call.c [2018-10-26 19:46:45,855 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:46:45,866 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:46:45,885 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:46:45,939 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:46:45,940 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:46:45,940 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:46:45,940 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:46:45,940 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:46:45,940 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:46:45,940 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:46:45,941 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:46:45,941 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:46:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 19:46:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 19:46:46,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:46,011 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:46,014 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:46,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1534999810, now seen corresponding path program 1 times [2018-10-26 19:46:46,023 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:46,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:46,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:46,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:46,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:46:46,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:46,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:46:46,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:46,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:46,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:46,372 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 19:47:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:13,749 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-10-26 19:47:13,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:47:13,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-26 19:47:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:13,812 INFO L225 Difference]: With dead ends: 6409 [2018-10-26 19:47:13,812 INFO L226 Difference]: Without dead ends: 4653 [2018-10-26 19:47:13,823 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 [2018-10-26 19:47:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-10-26 19:47:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-10-26 19:47:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-10-26 19:47:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-10-26 19:47:14,156 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 13 [2018-10-26 19:47:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:14,157 INFO L481 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-10-26 19:47:14,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:47:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-10-26 19:47:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-26 19:47:14,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:14,161 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:47:14,163 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:14,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:14,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1038770723, now seen corresponding path program 1 times [2018-10-26 19:47:14,163 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:14,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:14,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:14,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:14,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:14,655 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 19:47:14,822 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-26 19:47:15,337 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-26 19:47:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:47:15,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:15,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:47:15,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:47:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:47:15,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:47:15,472 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-10-26 19:47:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:54,053 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-10-26 19:47:54,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:47:54,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2018-10-26 19:47:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:54,130 INFO L225 Difference]: With dead ends: 20192 [2018-10-26 19:47:54,130 INFO L226 Difference]: Without dead ends: 15577 [2018-10-26 19:47:54,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:47:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-10-26 19:47:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-10-26 19:47:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-10-26 19:47:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-10-26 19:47:54,402 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 81 [2018-10-26 19:47:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:54,403 INFO L481 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-10-26 19:47:54,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:47:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-10-26 19:47:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-26 19:47:54,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:54,416 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:54,416 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:54,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:54,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1373656699, now seen corresponding path program 1 times [2018-10-26 19:47:54,417 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:54,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:54,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:54,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:54,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:55,042 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 19:47:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-26 19:47:55,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:55,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:47:55,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:47:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:47:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:47:55,477 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-10-26 19:48:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:32,341 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-10-26 19:48:32,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:48:32,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2018-10-26 19:48:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:32,412 INFO L225 Difference]: With dead ends: 40712 [2018-10-26 19:48:32,412 INFO L226 Difference]: Without dead ends: 26510 [2018-10-26 19:48:32,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:48:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-10-26 19:48:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-10-26 19:48:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-10-26 19:48:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-10-26 19:48:32,813 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 299 [2018-10-26 19:48:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:32,814 INFO L481 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-10-26 19:48:32,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:48:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-10-26 19:48:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-26 19:48:32,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:32,826 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:32,826 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:32,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:32,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1286875605, now seen corresponding path program 1 times [2018-10-26 19:48:32,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:32,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:32,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:32,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:32,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-26 19:48:33,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:48:33,428 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 [2018-10-26 19:48:33,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:33,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:48:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:48:33,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:48:33,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 19:48:33,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:48:33,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:48:33,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:33,754 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 4 states. [2018-10-26 19:48:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:54,724 INFO L93 Difference]: Finished difference Result 79222 states and 101661 transitions. [2018-10-26 19:48:54,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:48:54,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2018-10-26 19:48:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:54,838 INFO L225 Difference]: With dead ends: 79222 [2018-10-26 19:48:54,838 INFO L226 Difference]: Without dead ends: 56816 [2018-10-26 19:48:54,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56816 states. [2018-10-26 19:48:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56816 to 34695. [2018-10-26 19:48:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34695 states. [2018-10-26 19:48:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34695 states to 34695 states and 44830 transitions. [2018-10-26 19:48:55,509 INFO L78 Accepts]: Start accepts. Automaton has 34695 states and 44830 transitions. Word has length 327 [2018-10-26 19:48:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:55,510 INFO L481 AbstractCegarLoop]: Abstraction has 34695 states and 44830 transitions. [2018-10-26 19:48:55,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:48:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 34695 states and 44830 transitions. [2018-10-26 19:48:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-26 19:48:55,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:55,518 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:55,518 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:55,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:55,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1051129623, now seen corresponding path program 1 times [2018-10-26 19:48:55,519 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:55,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:55,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:55,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:55,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:48:55,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:55,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:48:55,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:48:55,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:48:55,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:48:55,969 INFO L87 Difference]: Start difference. First operand 34695 states and 44830 transitions. Second operand 3 states. [2018-10-26 19:49:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:07,759 INFO L93 Difference]: Finished difference Result 87227 states and 116937 transitions. [2018-10-26 19:49:07,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:49:07,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 360 [2018-10-26 19:49:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:07,844 INFO L225 Difference]: With dead ends: 87227 [2018-10-26 19:49:07,844 INFO L226 Difference]: Without dead ends: 48434 [2018-10-26 19:49:07,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:49:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2018-10-26 19:49:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48386. [2018-10-26 19:49:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48386 states. [2018-10-26 19:49:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48386 states to 48386 states and 62301 transitions. [2018-10-26 19:49:08,446 INFO L78 Accepts]: Start accepts. Automaton has 48386 states and 62301 transitions. Word has length 360 [2018-10-26 19:49:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:08,447 INFO L481 AbstractCegarLoop]: Abstraction has 48386 states and 62301 transitions. [2018-10-26 19:49:08,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:49:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 48386 states and 62301 transitions. [2018-10-26 19:49:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-26 19:49:08,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:08,461 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:08,461 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:08,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1611422899, now seen corresponding path program 1 times [2018-10-26 19:49:08,462 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:08,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:08,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:08,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:08,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 242 proven. 65 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-26 19:49:09,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:49:09,109 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 [2018-10-26 19:49:09,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:09,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:49:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-26 19:49:09,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:49:09,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:49:09,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:49:09,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:49:09,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:49:09,608 INFO L87 Difference]: Start difference. First operand 48386 states and 62301 transitions. Second operand 5 states. [2018-10-26 19:49:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:36,092 INFO L93 Difference]: Finished difference Result 203613 states and 269958 transitions. [2018-10-26 19:49:36,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:49:36,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2018-10-26 19:49:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:36,281 INFO L225 Difference]: With dead ends: 203613 [2018-10-26 19:49:36,281 INFO L226 Difference]: Without dead ends: 156595 [2018-10-26 19:49:36,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:49:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156595 states. [2018-10-26 19:49:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156595 to 111203. [2018-10-26 19:49:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111203 states. [2018-10-26 19:49:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111203 states to 111203 states and 133601 transitions. [2018-10-26 19:49:37,571 INFO L78 Accepts]: Start accepts. Automaton has 111203 states and 133601 transitions. Word has length 483 [2018-10-26 19:49:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:37,571 INFO L481 AbstractCegarLoop]: Abstraction has 111203 states and 133601 transitions. [2018-10-26 19:49:37,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:49:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 111203 states and 133601 transitions. [2018-10-26 19:49:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-10-26 19:49:37,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:37,612 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:37,612 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:37,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:37,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1566320655, now seen corresponding path program 1 times [2018-10-26 19:49:37,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:37,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:37,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:37,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:37,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 708 proven. 4 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-10-26 19:49:39,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:49:39,629 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:49:39,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:39,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:49:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-10-26 19:49:40,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:49:40,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:49:40,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:49:40,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:49:40,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:49:40,378 INFO L87 Difference]: Start difference. First operand 111203 states and 133601 transitions. Second operand 5 states. [2018-10-26 19:50:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:00,152 INFO L93 Difference]: Finished difference Result 231968 states and 277242 transitions. [2018-10-26 19:50:00,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:50:00,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-10-26 19:50:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:00,287 INFO L225 Difference]: With dead ends: 231968 [2018-10-26 19:50:00,287 INFO L226 Difference]: Without dead ends: 118032 [2018-10-26 19:50:00,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 863 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:50:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118032 states. [2018-10-26 19:50:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118032 to 109830. [2018-10-26 19:50:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109830 states. [2018-10-26 19:50:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109830 states to 109830 states and 123617 transitions. [2018-10-26 19:50:01,942 INFO L78 Accepts]: Start accepts. Automaton has 109830 states and 123617 transitions. Word has length 863 [2018-10-26 19:50:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:01,942 INFO L481 AbstractCegarLoop]: Abstraction has 109830 states and 123617 transitions. [2018-10-26 19:50:01,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:50:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 109830 states and 123617 transitions. [2018-10-26 19:50:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-10-26 19:50:01,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:01,964 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:50:01,964 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:01,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:01,965 INFO L82 PathProgramCache]: Analyzing trace with hash 614805490, now seen corresponding path program 1 times [2018-10-26 19:50:01,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:01,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:01,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:01,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:01,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 617 proven. 72 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-26 19:50:03,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:50:03,586 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:50:03,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:04,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:50:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-26 19:50:05,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:50:05,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:50:05,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:50:05,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:50:05,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:50:05,238 INFO L87 Difference]: Start difference. First operand 109830 states and 123617 transitions. Second operand 5 states. Received shutdown request... [2018-10-26 19:50:19,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:50:19,334 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:50:19,340 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:50:19,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:50:19 BoogieIcfgContainer [2018-10-26 19:50:19,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:50:19,342 INFO L168 Benchmark]: Toolchain (without parser) took 235576.57 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -402.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-26 19:50:19,343 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-26 19:50:19,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3412.95 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: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:50:19,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 1187.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:50:19,345 INFO L168 Benchmark]: Boogie Preprocessor took 751.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:50:19,346 INFO L168 Benchmark]: RCFGBuilder took 16712.98 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.5 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 479.7 MB). Peak memory consumption was 761.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:50:19,347 INFO L168 Benchmark]: TraceAbstraction took 213505.43 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -250.1 MB). Peak memory consumption was 788.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:50:19,352 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3412.95 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: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1187.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 751.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16712.98 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.5 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 479.7 MB). Peak memory consumption was 761.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213505.43 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -250.1 MB). Peak memory consumption was 788.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (109830states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (162998 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.4s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 196.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11719 SDtfs, 43582 SDslu, 3697 SDs, 0 SdLazy, 89070 SolverSat, 18206 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 167.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2749 GetRequests, 2710 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111203occurred in iteration=6, 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: 4.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 79908 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 6167 NumberOfCodeBlocks, 6167 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6155 ConstructedInterpolants, 0 QuantifiedInterpolants, 14224500 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3221 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 5488/5633 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown