java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 04:34:59,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 04:34:59,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 04:34:59,698 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 04:34:59,698 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 04:34:59,699 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 04:34:59,703 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 04:34:59,710 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 04:34:59,713 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 04:34:59,714 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 04:34:59,715 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 04:34:59,715 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 04:34:59,716 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 04:34:59,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 04:34:59,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 04:34:59,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 04:34:59,733 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 04:34:59,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 04:34:59,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 04:34:59,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 04:34:59,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 04:34:59,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 04:34:59,747 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 04:34:59,763 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 04:34:59,785 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 04:34:59,786 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 04:34:59,786 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 04:34:59,787 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 04:34:59,788 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 04:34:59,788 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 04:34:59,788 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 04:34:59,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 04:34:59,789 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 04:34:59,789 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 04:34:59,789 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 04:34:59,789 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 04:34:59,789 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 04:34:59,790 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 04:34:59,790 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 04:34:59,790 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 04:34:59,790 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 04:34:59,790 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 04:34:59,791 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 04:34:59,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 04:34:59,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 04:34:59,792 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 04:34:59,792 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 04:34:59,792 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 04:34:59,793 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 04:34:59,793 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 04:34:59,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 04:34:59,793 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 04:34:59,793 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 04:34:59,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 04:34:59,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 04:34:59,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 04:34:59,865 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 04:34:59,866 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 04:34:59,866 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40_false-unreach-call.c [2018-07-22 04:35:00,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a0592b3a0/5c7baa39c769467a9f179c8a54b66a9b/FLAG6b5b6abe5 [2018-07-22 04:35:00,814 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 04:35:00,815 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label40_false-unreach-call.c [2018-07-22 04:35:00,888 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a0592b3a0/5c7baa39c769467a9f179c8a54b66a9b/FLAG6b5b6abe5 [2018-07-22 04:35:01,059 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a0592b3a0/5c7baa39c769467a9f179c8a54b66a9b [2018-07-22 04:35:01,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 04:35:01,075 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 04:35:01,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 04:35:01,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 04:35:01,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 04:35:01,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:35:01" (1/1) ... [2018-07-22 04:35:01,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:01, skipping insertion in model container [2018-07-22 04:35:01,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:35:01" (1/1) ... [2018-07-22 04:35:01,404 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 04:35:02,411 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 04:35:02,431 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 04:35:02,984 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 04:35:03,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03 WrapperNode [2018-07-22 04:35:03,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 04:35:03,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 04:35:03,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 04:35:03,346 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 04:35:03,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:03,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:03,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 04:35:03,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 04:35:03,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 04:35:03,706 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 04:35:03,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:03,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:03,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:03,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:04,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:04,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:04,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... [2018-07-22 04:35:04,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 04:35:04,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 04:35:04,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 04:35:04,692 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 04:35:04,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 04:35:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 04:35:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 04:35:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 04:35:18,195 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 04:35:18,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:35:18 BoogieIcfgContainer [2018-07-22 04:35:18,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 04:35:18,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 04:35:18,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 04:35:18,200 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 04:35:18,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:35:01" (1/3) ... [2018-07-22 04:35:18,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3625a572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:35:18, skipping insertion in model container [2018-07-22 04:35:18,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:35:03" (2/3) ... [2018-07-22 04:35:18,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3625a572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:35:18, skipping insertion in model container [2018-07-22 04:35:18,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:35:18" (3/3) ... [2018-07-22 04:35:18,204 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label40_false-unreach-call.c [2018-07-22 04:35:18,213 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 04:35:18,222 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 04:35:18,286 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 04:35:18,287 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 04:35:18,287 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 04:35:18,287 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 04:35:18,287 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 04:35:18,287 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 04:35:18,287 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 04:35:18,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 04:35:18,288 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 04:35:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-07-22 04:35:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-22 04:35:18,331 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:35:18,332 INFO L358 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] [2018-07-22 04:35:18,333 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:35:18,337 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-07-22 04:35:18,338 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:35:18,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:35:18,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:18,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:18,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:35:18,716 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:35:18,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:35:18,718 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:35:18,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:35:18,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:35:18,732 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-07-22 04:35:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:35:25,652 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-07-22 04:35:25,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:35:25,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-07-22 04:35:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:35:25,683 INFO L225 Difference]: With dead ends: 2085 [2018-07-22 04:35:25,684 INFO L226 Difference]: Without dead ends: 1487 [2018-07-22 04:35:25,696 INFO L578 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 [2018-07-22 04:35:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-07-22 04:35:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-07-22 04:35:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-07-22 04:35:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-07-22 04:35:25,816 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 23 [2018-07-22 04:35:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:35:25,816 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-07-22 04:35:25,816 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:35:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-07-22 04:35:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-22 04:35:25,820 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:35:25,820 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 04:35:25,820 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:35:25,822 INFO L82 PathProgramCache]: Analyzing trace with hash 530671185, now seen corresponding path program 1 times [2018-07-22 04:35:25,822 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:35:25,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:35:25,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:25,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:25,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:35:26,162 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:35:26,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:35:26,164 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:35:26,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:35:26,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:35:26,166 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-07-22 04:35:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:35:32,000 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-07-22 04:35:32,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:35:32,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-07-22 04:35:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:35:32,012 INFO L225 Difference]: With dead ends: 2908 [2018-07-22 04:35:32,013 INFO L226 Difference]: Without dead ends: 1887 [2018-07-22 04:35:32,017 INFO L578 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 [2018-07-22 04:35:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-07-22 04:35:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-07-22 04:35:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-07-22 04:35:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-07-22 04:35:32,109 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 91 [2018-07-22 04:35:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:35:32,109 INFO L471 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-07-22 04:35:32,109 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:35:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-07-22 04:35:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-22 04:35:32,116 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:35:32,116 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 04:35:32,116 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:35:32,116 INFO L82 PathProgramCache]: Analyzing trace with hash -265539042, now seen corresponding path program 1 times [2018-07-22 04:35:32,117 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:35:32,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:35:32,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:32,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:32,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:35:32,468 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:35:32,468 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:35:32,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:32,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:35:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:35:32,753 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 04:35:32,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-22 04:35:32,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 04:35:32,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 04:35:32,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:35:32,755 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 6 states. [2018-07-22 04:35:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:35:48,924 INFO L93 Difference]: Finished difference Result 9400 states and 12734 transitions. [2018-07-22 04:35:48,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 04:35:48,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2018-07-22 04:35:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:35:48,950 INFO L225 Difference]: With dead ends: 9400 [2018-07-22 04:35:48,951 INFO L226 Difference]: Without dead ends: 5746 [2018-07-22 04:35:48,956 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:35:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2018-07-22 04:35:49,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 5738. [2018-07-22 04:35:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5738 states. [2018-07-22 04:35:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 6855 transitions. [2018-07-22 04:35:49,105 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 6855 transitions. Word has length 94 [2018-07-22 04:35:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:35:49,106 INFO L471 AbstractCegarLoop]: Abstraction has 5738 states and 6855 transitions. [2018-07-22 04:35:49,106 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 04:35:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 6855 transitions. [2018-07-22 04:35:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-22 04:35:49,118 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:35:49,119 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:35:49,119 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:35:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1282643685, now seen corresponding path program 1 times [2018-07-22 04:35:49,119 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:35:49,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:35:49,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:49,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:49,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:35:49,507 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:35:49,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 04:35:49,507 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 04:35:49,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 04:35:49,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 04:35:49,508 INFO L87 Difference]: Start difference. First operand 5738 states and 6855 transitions. Second operand 5 states. [2018-07-22 04:35:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:35:55,294 INFO L93 Difference]: Finished difference Result 15708 states and 18833 transitions. [2018-07-22 04:35:55,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 04:35:55,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2018-07-22 04:35:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:35:55,324 INFO L225 Difference]: With dead ends: 15708 [2018-07-22 04:35:55,324 INFO L226 Difference]: Without dead ends: 10399 [2018-07-22 04:35:55,333 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:35:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10399 states. [2018-07-22 04:35:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10399 to 8299. [2018-07-22 04:35:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8299 states. [2018-07-22 04:35:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 9697 transitions. [2018-07-22 04:35:55,637 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 9697 transitions. Word has length 173 [2018-07-22 04:35:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:35:55,637 INFO L471 AbstractCegarLoop]: Abstraction has 8299 states and 9697 transitions. [2018-07-22 04:35:55,637 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 04:35:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 9697 transitions. [2018-07-22 04:35:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-22 04:35:55,647 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:35:55,647 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 04:35:55,647 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:35:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash 478950484, now seen corresponding path program 1 times [2018-07-22 04:35:55,648 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:35:55,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:35:55,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:55,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:55,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-07-22 04:35:55,947 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:35:55,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:35:55,948 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:35:55,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:35:55,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:35:55,948 INFO L87 Difference]: Start difference. First operand 8299 states and 9697 transitions. Second operand 3 states. [2018-07-22 04:35:58,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:35:58,486 INFO L93 Difference]: Finished difference Result 20427 states and 24160 transitions. [2018-07-22 04:35:58,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:35:58,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 278 [2018-07-22 04:35:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:35:58,527 INFO L225 Difference]: With dead ends: 20427 [2018-07-22 04:35:58,528 INFO L226 Difference]: Without dead ends: 12556 [2018-07-22 04:35:58,537 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:35:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2018-07-22 04:35:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 12129. [2018-07-22 04:35:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12129 states. [2018-07-22 04:35:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12129 states to 12129 states and 13784 transitions. [2018-07-22 04:35:58,933 INFO L78 Accepts]: Start accepts. Automaton has 12129 states and 13784 transitions. Word has length 278 [2018-07-22 04:35:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:35:58,933 INFO L471 AbstractCegarLoop]: Abstraction has 12129 states and 13784 transitions. [2018-07-22 04:35:58,934 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:35:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 12129 states and 13784 transitions. [2018-07-22 04:35:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-22 04:35:58,940 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:35:58,940 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 04:35:58,941 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:35:58,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1254001775, now seen corresponding path program 1 times [2018-07-22 04:35:58,941 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:35:58,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:35:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:58,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:35:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:35:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 209 proven. 83 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:35:59,619 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:35:59,619 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-22 04:35:59,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:35:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:35:59,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:36:00,005 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2018-07-22 04:36:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-22 04:36:00,438 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 04:36:00,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 04:36:00,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 04:36:00,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 04:36:00,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:36:00,439 INFO L87 Difference]: Start difference. First operand 12129 states and 13784 transitions. Second operand 6 states. [2018-07-22 04:36:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:36:10,187 INFO L93 Difference]: Finished difference Result 43076 states and 49849 transitions. [2018-07-22 04:36:10,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 04:36:10,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 296 [2018-07-22 04:36:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:36:10,237 INFO L225 Difference]: With dead ends: 43076 [2018-07-22 04:36:10,237 INFO L226 Difference]: Without dead ends: 25776 [2018-07-22 04:36:10,252 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:36:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25776 states. [2018-07-22 04:36:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25776 to 25757. [2018-07-22 04:36:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25757 states. [2018-07-22 04:36:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25757 states to 25757 states and 28043 transitions. [2018-07-22 04:36:10,632 INFO L78 Accepts]: Start accepts. Automaton has 25757 states and 28043 transitions. Word has length 296 [2018-07-22 04:36:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:36:10,633 INFO L471 AbstractCegarLoop]: Abstraction has 25757 states and 28043 transitions. [2018-07-22 04:36:10,634 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 04:36:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 25757 states and 28043 transitions. [2018-07-22 04:36:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-22 04:36:10,639 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:36:10,639 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 04:36:10,639 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:36:10,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1608182708, now seen corresponding path program 1 times [2018-07-22 04:36:10,640 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:36:10,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:36:10,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:36:10,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:36:10,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:36:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:36:11,319 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-07-22 04:36:11,562 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-07-22 04:36:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 64 proven. 246 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-22 04:36:11,717 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:36:11,717 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 04:36:11,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:36:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:36:12,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:36:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 209 proven. 83 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:36:12,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:36:12,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 10 [2018-07-22 04:36:12,466 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-22 04:36:12,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-22 04:36:12,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-22 04:36:12,467 INFO L87 Difference]: Start difference. First operand 25757 states and 28043 transitions. Second operand 11 states. [2018-07-22 04:36:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:36:20,224 INFO L93 Difference]: Finished difference Result 54089 states and 58754 transitions. [2018-07-22 04:36:20,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-22 04:36:20,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 298 [2018-07-22 04:36:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:36:20,272 INFO L225 Difference]: With dead ends: 54089 [2018-07-22 04:36:20,273 INFO L226 Difference]: Without dead ends: 28334 [2018-07-22 04:36:20,299 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-07-22 04:36:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28334 states. [2018-07-22 04:36:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28334 to 27886. [2018-07-22 04:36:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27886 states. [2018-07-22 04:36:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27886 states to 27886 states and 30239 transitions. [2018-07-22 04:36:20,886 INFO L78 Accepts]: Start accepts. Automaton has 27886 states and 30239 transitions. Word has length 298 [2018-07-22 04:36:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:36:20,886 INFO L471 AbstractCegarLoop]: Abstraction has 27886 states and 30239 transitions. [2018-07-22 04:36:20,886 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-22 04:36:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 27886 states and 30239 transitions. [2018-07-22 04:36:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-22 04:36:20,906 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:36:20,907 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-22 04:36:20,907 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:36:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 19986349, now seen corresponding path program 1 times [2018-07-22 04:36:20,908 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:36:20,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:36:20,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:36:20,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:36:20,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:36:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:36:21,554 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-22 04:36:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 398 proven. 83 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-22 04:36:22,296 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:36:22,296 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 04:36:22,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:36:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:36:22,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:36:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 315 proven. 272 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:36:23,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:36:23,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2018-07-22 04:36:23,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-22 04:36:23,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-22 04:36:23,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-07-22 04:36:23,451 INFO L87 Difference]: Start difference. First operand 27886 states and 30239 transitions. Second operand 13 states. [2018-07-22 04:36:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:36:41,482 INFO L93 Difference]: Finished difference Result 71303 states and 76948 transitions. [2018-07-22 04:36:41,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-22 04:36:41,483 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 424 [2018-07-22 04:36:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:36:41,562 INFO L225 Difference]: With dead ends: 71303 [2018-07-22 04:36:41,562 INFO L226 Difference]: Without dead ends: 44271 [2018-07-22 04:36:41,581 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-22 04:36:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44271 states. [2018-07-22 04:36:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44271 to 41100. [2018-07-22 04:36:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41100 states. [2018-07-22 04:36:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41100 states to 41100 states and 43863 transitions. [2018-07-22 04:36:42,067 INFO L78 Accepts]: Start accepts. Automaton has 41100 states and 43863 transitions. Word has length 424 [2018-07-22 04:36:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:36:42,067 INFO L471 AbstractCegarLoop]: Abstraction has 41100 states and 43863 transitions. [2018-07-22 04:36:42,067 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-22 04:36:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 41100 states and 43863 transitions. [2018-07-22 04:36:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-07-22 04:36:42,079 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:36:42,079 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-22 04:36:42,080 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:36:42,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1287134220, now seen corresponding path program 1 times [2018-07-22 04:36:42,080 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:36:42,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:36:42,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:36:42,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:36:42,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:36:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:36:43,059 WARN L169 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 6 [2018-07-22 04:36:43,412 WARN L169 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-07-22 04:36:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 313 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:36:43,672 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:36:43,672 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-22 04:36:43,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:36:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:36:43,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:36:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 313 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:36:46,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:36:46,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-22 04:36:46,049 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 04:36:46,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 04:36:46,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-22 04:36:46,050 INFO L87 Difference]: Start difference. First operand 41100 states and 43863 transitions. Second operand 9 states. [2018-07-22 04:37:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:37:21,757 INFO L93 Difference]: Finished difference Result 133436 states and 143077 transitions. [2018-07-22 04:37:21,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-22 04:37:21,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 433 [2018-07-22 04:37:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:37:21,850 INFO L225 Difference]: With dead ends: 133436 [2018-07-22 04:37:21,850 INFO L226 Difference]: Without dead ends: 89776 [2018-07-22 04:37:21,889 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-22 04:37:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89776 states. [2018-07-22 04:37:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89776 to 68359. [2018-07-22 04:37:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68359 states. [2018-07-22 04:37:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68359 states to 68359 states and 72182 transitions. [2018-07-22 04:37:23,048 INFO L78 Accepts]: Start accepts. Automaton has 68359 states and 72182 transitions. Word has length 433 [2018-07-22 04:37:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:37:23,049 INFO L471 AbstractCegarLoop]: Abstraction has 68359 states and 72182 transitions. [2018-07-22 04:37:23,049 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 04:37:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 68359 states and 72182 transitions. [2018-07-22 04:37:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-07-22 04:37:23,059 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:37:23,060 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2018-07-22 04:37:23,060 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:37:23,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1059064605, now seen corresponding path program 1 times [2018-07-22 04:37:23,060 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:37:23,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:37:23,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:37:23,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:37:23,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:37:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:37:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 185 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:37:23,839 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:37:23,839 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:37:23,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:37:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:37:23,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:37:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 435 proven. 253 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-07-22 04:37:25,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:37:25,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2018-07-22 04:37:25,015 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-22 04:37:25,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-22 04:37:25,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-07-22 04:37:25,016 INFO L87 Difference]: Start difference. First operand 68359 states and 72182 transitions. Second operand 12 states. [2018-07-22 04:37:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:37:48,373 INFO L93 Difference]: Finished difference Result 193131 states and 204432 transitions. [2018-07-22 04:37:48,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-22 04:37:48,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 480 [2018-07-22 04:37:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:37:48,493 INFO L225 Difference]: With dead ends: 193131 [2018-07-22 04:37:48,493 INFO L226 Difference]: Without dead ends: 126051 [2018-07-22 04:37:48,520 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 505 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=386, Invalid=1174, Unknown=0, NotChecked=0, Total=1560 [2018-07-22 04:37:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126051 states. [2018-07-22 04:37:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126051 to 83292. [2018-07-22 04:37:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83292 states. [2018-07-22 04:37:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83292 states to 83292 states and 87733 transitions. [2018-07-22 04:37:49,435 INFO L78 Accepts]: Start accepts. Automaton has 83292 states and 87733 transitions. Word has length 480 [2018-07-22 04:37:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:37:49,436 INFO L471 AbstractCegarLoop]: Abstraction has 83292 states and 87733 transitions. [2018-07-22 04:37:49,436 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-22 04:37:49,436 INFO L276 IsEmpty]: Start isEmpty. Operand 83292 states and 87733 transitions. [2018-07-22 04:37:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-07-22 04:37:49,449 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:37:49,450 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2018-07-22 04:37:49,450 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:37:49,450 INFO L82 PathProgramCache]: Analyzing trace with hash 992057054, now seen corresponding path program 1 times [2018-07-22 04:37:49,451 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:37:49,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:37:49,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:37:49,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:37:49,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:37:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:37:49,980 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-07-22 04:37:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 850 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-07-22 04:37:50,130 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:37:50,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 04:37:50,131 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:37:50,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:37:50,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:37:50,131 INFO L87 Difference]: Start difference. First operand 83292 states and 87733 transitions. Second operand 4 states. [2018-07-22 04:37:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:37:55,868 INFO L93 Difference]: Finished difference Result 178544 states and 188211 transitions. [2018-07-22 04:37:55,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:37:55,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 537 [2018-07-22 04:37:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:37:55,954 INFO L225 Difference]: With dead ends: 178544 [2018-07-22 04:37:55,954 INFO L226 Difference]: Without dead ends: 96105 [2018-07-22 04:37:55,989 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:37:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96105 states. [2018-07-22 04:37:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96105 to 91821. [2018-07-22 04:37:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91821 states. [2018-07-22 04:37:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91821 states to 91821 states and 96972 transitions. [2018-07-22 04:37:56,859 INFO L78 Accepts]: Start accepts. Automaton has 91821 states and 96972 transitions. Word has length 537 [2018-07-22 04:37:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:37:56,860 INFO L471 AbstractCegarLoop]: Abstraction has 91821 states and 96972 transitions. [2018-07-22 04:37:56,860 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:37:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 91821 states and 96972 transitions. [2018-07-22 04:37:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-07-22 04:37:56,867 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:37:56,867 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-22 04:37:56,867 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:37:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash -210067936, now seen corresponding path program 1 times [2018-07-22 04:37:56,867 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:37:56,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:37:56,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:37:56,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:37:56,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:37:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:37:57,776 WARN L169 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-07-22 04:37:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 246 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:37:58,408 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:37:58,408 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:37:58,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:37:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:37:58,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:37:58,938 WARN L169 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-22 04:38:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 414 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:38:00,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:38:00,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 13 [2018-07-22 04:38:00,576 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-22 04:38:00,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-22 04:38:00,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-07-22 04:38:00,576 INFO L87 Difference]: Start difference. First operand 91821 states and 96972 transitions. Second operand 13 states. [2018-07-22 04:38:01,502 WARN L169 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-07-22 04:38:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:38:20,340 INFO L93 Difference]: Finished difference Result 207500 states and 219044 transitions. [2018-07-22 04:38:20,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-22 04:38:20,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 539 [2018-07-22 04:38:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:38:20,458 INFO L225 Difference]: With dead ends: 207500 [2018-07-22 04:38:20,458 INFO L226 Difference]: Without dead ends: 116956 [2018-07-22 04:38:20,496 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 566 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=560, Invalid=1162, Unknown=0, NotChecked=0, Total=1722 [2018-07-22 04:38:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116956 states. [2018-07-22 04:38:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116956 to 84091. [2018-07-22 04:38:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84091 states. [2018-07-22 04:38:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84091 states to 84091 states and 88672 transitions. [2018-07-22 04:38:21,759 INFO L78 Accepts]: Start accepts. Automaton has 84091 states and 88672 transitions. Word has length 539 [2018-07-22 04:38:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:38:21,761 INFO L471 AbstractCegarLoop]: Abstraction has 84091 states and 88672 transitions. [2018-07-22 04:38:21,761 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-22 04:38:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 84091 states and 88672 transitions. [2018-07-22 04:38:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-07-22 04:38:21,773 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:38:21,773 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:38:21,774 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:38:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1144619380, now seen corresponding path program 1 times [2018-07-22 04:38:21,774 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:38:21,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:38:21,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:38:21,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:38:21,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:38:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:38:22,684 WARN L169 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-07-22 04:38:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 618 proven. 336 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:38:23,783 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:38:23,783 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:38:23,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:38:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:38:23,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:38:24,562 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 37 [2018-07-22 04:38:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 750 proven. 204 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 04:38:25,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:38:25,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2018-07-22 04:38:25,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-22 04:38:25,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-22 04:38:25,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-07-22 04:38:25,869 INFO L87 Difference]: Start difference. First operand 84091 states and 88672 transitions. Second operand 15 states. [2018-07-22 04:38:32,244 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-07-22 04:38:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:38:50,157 INFO L93 Difference]: Finished difference Result 189922 states and 200113 transitions. [2018-07-22 04:38:50,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-22 04:38:50,157 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 567 [2018-07-22 04:38:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:38:50,269 INFO L225 Difference]: With dead ends: 189922 [2018-07-22 04:38:50,269 INFO L226 Difference]: Without dead ends: 106685 [2018-07-22 04:38:50,290 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=544, Invalid=1348, Unknown=0, NotChecked=0, Total=1892 [2018-07-22 04:38:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106685 states. [2018-07-22 04:38:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106685 to 90906. [2018-07-22 04:38:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90906 states. [2018-07-22 04:38:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90906 states to 90906 states and 95397 transitions. [2018-07-22 04:38:51,297 INFO L78 Accepts]: Start accepts. Automaton has 90906 states and 95397 transitions. Word has length 567 [2018-07-22 04:38:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:38:51,297 INFO L471 AbstractCegarLoop]: Abstraction has 90906 states and 95397 transitions. [2018-07-22 04:38:51,297 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-22 04:38:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 90906 states and 95397 transitions. [2018-07-22 04:38:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-07-22 04:38:51,305 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:38:51,305 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2018-07-22 04:38:51,305 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:38:51,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1302565931, now seen corresponding path program 1 times [2018-07-22 04:38:51,306 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:38:51,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:38:51,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:38:51,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:38:51,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:38:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:38:51,841 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 Received shutdown request... [2018-07-22 04:38:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 744 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2018-07-22 04:38:52,416 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:38:52,416 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 04:38:52,417 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:38:52,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:38:52,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:38:52,418 INFO L87 Difference]: Start difference. First operand 90906 states and 95397 transitions. Second operand 4 states. [2018-07-22 04:38:52,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-22 04:38:52,419 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 04:38:52,425 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 04:38:52,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:38:52 BoogieIcfgContainer [2018-07-22 04:38:52,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 04:38:52,427 INFO L168 Benchmark]: Toolchain (without parser) took 231357.88 ms. Allocated memory was 308.8 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 246.7 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 594.3 MB. Max. memory is 5.3 GB. [2018-07-22 04:38:52,428 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 308.8 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 04:38:52,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2269.36 ms. Allocated memory was 308.8 MB in the beginning and 408.4 MB in the end (delta: 99.6 MB). Free memory was 245.7 MB in the beginning and 343.4 MB in the end (delta: -97.6 MB). Peak memory consumption was 128.0 MB. Max. memory is 5.3 GB. [2018-07-22 04:38:52,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 359.60 ms. Allocated memory is still 408.4 MB. Free memory was 343.4 MB in the beginning and 277.9 MB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 5.3 GB. [2018-07-22 04:38:52,429 INFO L168 Benchmark]: Boogie Preprocessor took 985.47 ms. Allocated memory was 408.4 MB in the beginning and 599.3 MB in the end (delta: 190.8 MB). Free memory was 277.9 MB in the beginning and 490.5 MB in the end (delta: -212.5 MB). Peak memory consumption was 44.9 MB. Max. memory is 5.3 GB. [2018-07-22 04:38:52,430 INFO L168 Benchmark]: RCFGBuilder took 13504.98 ms. Allocated memory was 599.3 MB in the beginning and 706.2 MB in the end (delta: 107.0 MB). Free memory was 490.5 MB in the beginning and 478.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 212.8 MB. Max. memory is 5.3 GB. [2018-07-22 04:38:52,431 INFO L168 Benchmark]: TraceAbstraction took 214228.53 ms. Allocated memory was 706.2 MB in the beginning and 2.0 GB in the end (delta: 1.3 GB). Free memory was 478.0 MB in the beginning and 1.4 GB in the end (delta: -888.8 MB). Peak memory consumption was 428.2 MB. Max. memory is 5.3 GB. [2018-07-22 04:38:52,437 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 308.8 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2269.36 ms. Allocated memory was 308.8 MB in the beginning and 408.4 MB in the end (delta: 99.6 MB). Free memory was 245.7 MB in the beginning and 343.4 MB in the end (delta: -97.6 MB). Peak memory consumption was 128.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 359.60 ms. Allocated memory is still 408.4 MB. Free memory was 343.4 MB in the beginning and 277.9 MB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 985.47 ms. Allocated memory was 408.4 MB in the beginning and 599.3 MB in the end (delta: 190.8 MB). Free memory was 277.9 MB in the beginning and 490.5 MB in the end (delta: -212.5 MB). Peak memory consumption was 44.9 MB. Max. memory is 5.3 GB. * RCFGBuilder took 13504.98 ms. Allocated memory was 599.3 MB in the beginning and 706.2 MB in the end (delta: 107.0 MB). Free memory was 490.5 MB in the beginning and 478.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 212.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 214228.53 ms. Allocated memory was 706.2 MB in the beginning and 2.0 GB in the end (delta: 1.3 GB). Free memory was 478.0 MB in the beginning and 1.4 GB in the end (delta: -888.8 MB). Peak memory consumption was 428.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 74). Cancelled while BasicCegarLoop was constructing difference of abstraction (90906states) and interpolant automaton (currently 2 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 214.1s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 182.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4138 SDtfs, 55797 SDslu, 4285 SDs, 0 SdLazy, 101724 SolverSat, 13685 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 156.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3403 GetRequests, 3209 SyntacticMatches, 14 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91821occurred in iteration=11, 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: 7.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 123741 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 7944 NumberOfCodeBlocks, 7944 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 7922 ConstructedInterpolants, 639 QuantifiedInterpolants, 34281990 SizeOfPredicates, 14 NumberOfNonLiveVariables, 4167 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 7664/11012 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label40_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_04-38-52-458.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label40_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_04-38-52-458.csv Completed graceful shutdown