java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:27:05,695 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:27:05,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:27:05,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:27:05,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:27:05,717 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:27:05,721 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:27:05,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:27:05,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:27:05,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:27:05,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:27:05,737 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:27:05,738 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:27:05,739 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:27:05,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:27:05,743 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:27:05,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:27:05,749 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:27:05,753 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:27:05,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:27:05,755 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:27:05,758 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:27:05,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:27:05,774 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:27:05,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:27:05,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:27:05,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:27:05,795 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:27:05,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:27:05,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:27:05,796 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:27:05,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:27:05,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:27:05,796 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:27:05,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:27:05,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:27:05,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:27:05,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:27:05,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:27:05,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:27:05,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:27:05,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:27:05,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:27:05,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:27:05,801 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:27:05,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:27:05,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:27:05,801 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:27:05,802 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:27:05,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:27:05,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:27:05,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:27:05,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:27:05,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:27:05,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:27:05,896 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:27:05,897 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:27:05,898 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c [2018-10-23 18:27:05,967 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68b6aae36/d28c08282b774a48a711ef47ca6aec85/FLAGe236fe8b3 [2018-10-23 18:27:06,716 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:27:06,717 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c [2018-10-23 18:27:06,745 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68b6aae36/d28c08282b774a48a711ef47ca6aec85/FLAGe236fe8b3 [2018-10-23 18:27:06,766 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68b6aae36/d28c08282b774a48a711ef47ca6aec85 [2018-10-23 18:27:06,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:27:06,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:27:06,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:27:06,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:27:06,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:27:06,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:27:06" (1/1) ... [2018-10-23 18:27:06,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1879af29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:06, skipping insertion in model container [2018-10-23 18:27:06,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:27:06" (1/1) ... [2018-10-23 18:27:06,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:27:06,931 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:27:07,918 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:27:07,923 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:27:08,391 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:27:08,416 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:27:08,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08 WrapperNode [2018-10-23 18:27:08,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:27:08,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:27:08,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:27:08,419 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:27:08,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:08,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:08,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:27:08,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:27:08,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:27:08,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:27:08,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:08,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:08,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:08,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:09,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:09,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:09,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... [2018-10-23 18:27:09,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:27:09,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:27:09,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:27:09,186 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:27:09,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:27:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:27:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:27:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:27:18,808 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:27:18,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:27:18 BoogieIcfgContainer [2018-10-23 18:27:18,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:27:18,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:27:18,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:27:18,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:27:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:27:06" (1/3) ... [2018-10-23 18:27:18,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66aabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:27:18, skipping insertion in model container [2018-10-23 18:27:18,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:08" (2/3) ... [2018-10-23 18:27:18,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66aabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:27:18, skipping insertion in model container [2018-10-23 18:27:18,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:27:18" (3/3) ... [2018-10-23 18:27:18,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34_false-unreach-call.c [2018-10-23 18:27:18,829 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:27:18,839 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:27:18,858 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:27:18,906 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:27:18,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:27:18,907 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:27:18,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:27:18,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:27:18,907 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:27:18,908 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:27:18,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:27:18,908 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:27:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:27:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-23 18:27:18,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:18,957 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:18,959 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:18,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:18,966 INFO L82 PathProgramCache]: Analyzing trace with hash 183950178, now seen corresponding path program 1 times [2018-10-23 18:27:18,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:18,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:19,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:19,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:19,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:19,374 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 18:27:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:19,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:27:19,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:27:19,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:27:19,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:27:19,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:19,406 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:27:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:27:34,369 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-23 18:27:34,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:27:34,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-23 18:27:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:27:34,407 INFO L225 Difference]: With dead ends: 2122 [2018-10-23 18:27:34,407 INFO L226 Difference]: Without dead ends: 1524 [2018-10-23 18:27:34,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-23 18:27:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-23 18:27:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-23 18:27:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-23 18:27:34,557 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 20 [2018-10-23 18:27:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:27:34,559 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-23 18:27:34,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:27:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-23 18:27:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 18:27:34,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:34,564 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:34,565 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:34,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash -727426299, now seen corresponding path program 1 times [2018-10-23 18:27:34,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:34,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:34,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:34,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:34,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:34,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:27:34,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:27:34,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:27:34,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:27:34,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:34,824 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-23 18:27:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:27:46,785 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-23 18:27:46,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:27:46,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-10-23 18:27:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:27:46,809 INFO L225 Difference]: With dead ends: 5604 [2018-10-23 18:27:46,809 INFO L226 Difference]: Without dead ends: 4109 [2018-10-23 18:27:46,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-23 18:27:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-23 18:27:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-23 18:27:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-23 18:27:46,896 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 95 [2018-10-23 18:27:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:27:46,897 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-23 18:27:46,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:27:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-23 18:27:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-23 18:27:46,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:46,906 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:46,906 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:46,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1303718491, now seen corresponding path program 1 times [2018-10-23 18:27:46,906 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:46,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:46,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:46,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:47,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:27:47,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:27:47,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:27:47,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:27:47,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:47,275 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-23 18:27:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:27:54,750 INFO L93 Difference]: Finished difference Result 15444 states and 23003 transitions. [2018-10-23 18:27:54,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:27:54,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-10-23 18:27:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:27:54,801 INFO L225 Difference]: With dead ends: 15444 [2018-10-23 18:27:54,801 INFO L226 Difference]: Without dead ends: 11348 [2018-10-23 18:27:54,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11348 states. [2018-10-23 18:27:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11348 to 11348. [2018-10-23 18:27:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11348 states. [2018-10-23 18:27:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 14691 transitions. [2018-10-23 18:27:55,007 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 14691 transitions. Word has length 150 [2018-10-23 18:27:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:27:55,007 INFO L481 AbstractCegarLoop]: Abstraction has 11348 states and 14691 transitions. [2018-10-23 18:27:55,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:27:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 14691 transitions. [2018-10-23 18:27:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-23 18:27:55,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:55,013 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:55,014 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:55,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:55,014 INFO L82 PathProgramCache]: Analyzing trace with hash 691492752, now seen corresponding path program 1 times [2018-10-23 18:27:55,014 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:55,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:55,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:55,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:55,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-23 18:27:55,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:27:55,420 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:27:55,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:55,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:27:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 18:27:55,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:27:55,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:27:55,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:27:55,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:27:55,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:27:55,709 INFO L87 Difference]: Start difference. First operand 11348 states and 14691 transitions. Second operand 5 states. [2018-10-23 18:28:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:04,101 INFO L93 Difference]: Finished difference Result 23541 states and 30673 transitions. [2018-10-23 18:28:04,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:04,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-10-23 18:28:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:04,146 INFO L225 Difference]: With dead ends: 23541 [2018-10-23 18:28:04,147 INFO L226 Difference]: Without dead ends: 12195 [2018-10-23 18:28:04,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:28:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2018-10-23 18:28:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 11343. [2018-10-23 18:28:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11343 states. [2018-10-23 18:28:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 14124 transitions. [2018-10-23 18:28:04,374 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 14124 transitions. Word has length 225 [2018-10-23 18:28:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:04,374 INFO L481 AbstractCegarLoop]: Abstraction has 11343 states and 14124 transitions. [2018-10-23 18:28:04,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:28:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 14124 transitions. [2018-10-23 18:28:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-23 18:28:04,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:04,381 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:04,381 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:04,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:04,382 INFO L82 PathProgramCache]: Analyzing trace with hash 763600966, now seen corresponding path program 1 times [2018-10-23 18:28:04,382 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:04,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:04,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:04,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:04,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 35 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:04,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:04,976 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:28:04,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:05,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:28:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 35 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:05,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:28:05,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 18:28:05,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:28:05,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:28:05,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:28:05,364 INFO L87 Difference]: Start difference. First operand 11343 states and 14124 transitions. Second operand 7 states. [2018-10-23 18:28:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:23,827 INFO L93 Difference]: Finished difference Result 35142 states and 44440 transitions. [2018-10-23 18:28:23,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 18:28:23,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2018-10-23 18:28:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:23,864 INFO L225 Difference]: With dead ends: 35142 [2018-10-23 18:28:23,864 INFO L226 Difference]: Without dead ends: 19469 [2018-10-23 18:28:23,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:28:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19469 states. [2018-10-23 18:28:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19469 to 16870. [2018-10-23 18:28:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16870 states. [2018-10-23 18:28:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16870 states to 16870 states and 19647 transitions. [2018-10-23 18:28:24,112 INFO L78 Accepts]: Start accepts. Automaton has 16870 states and 19647 transitions. Word has length 242 [2018-10-23 18:28:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:24,112 INFO L481 AbstractCegarLoop]: Abstraction has 16870 states and 19647 transitions. [2018-10-23 18:28:24,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:28:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16870 states and 19647 transitions. [2018-10-23 18:28:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-23 18:28:24,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:24,121 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:28:24,121 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:24,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1348567370, now seen corresponding path program 1 times [2018-10-23 18:28:24,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:24,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:24,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:24,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:24,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-23 18:28:24,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:24,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:28:24,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:28:24,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:28:24,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:24,575 INFO L87 Difference]: Start difference. First operand 16870 states and 19647 transitions. Second operand 4 states. [2018-10-23 18:28:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:33,546 INFO L93 Difference]: Finished difference Result 42294 states and 50336 transitions. [2018-10-23 18:28:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:33,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2018-10-23 18:28:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:33,600 INFO L225 Difference]: With dead ends: 42294 [2018-10-23 18:28:33,600 INFO L226 Difference]: Without dead ends: 23238 [2018-10-23 18:28:33,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23238 states. [2018-10-23 18:28:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23238 to 18535. [2018-10-23 18:28:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18535 states. [2018-10-23 18:28:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18535 states to 18535 states and 21287 transitions. [2018-10-23 18:28:33,871 INFO L78 Accepts]: Start accepts. Automaton has 18535 states and 21287 transitions. Word has length 335 [2018-10-23 18:28:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:33,872 INFO L481 AbstractCegarLoop]: Abstraction has 18535 states and 21287 transitions. [2018-10-23 18:28:33,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:28:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18535 states and 21287 transitions. [2018-10-23 18:28:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-23 18:28:33,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:33,882 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:28:33,882 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:33,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash -537873477, now seen corresponding path program 1 times [2018-10-23 18:28:33,883 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:33,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:33,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:33,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:33,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-23 18:28:34,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:34,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:28:34,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:28:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:28:34,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:34,293 INFO L87 Difference]: Start difference. First operand 18535 states and 21287 transitions. Second operand 4 states. [2018-10-23 18:28:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:40,488 INFO L93 Difference]: Finished difference Result 56685 states and 64810 transitions. [2018-10-23 18:28:40,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:40,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2018-10-23 18:28:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:40,543 INFO L225 Difference]: With dead ends: 56685 [2018-10-23 18:28:40,544 INFO L226 Difference]: Without dead ends: 38152 [2018-10-23 18:28:40,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38152 states. [2018-10-23 18:28:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38152 to 37715. [2018-10-23 18:28:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2018-10-23 18:28:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 42211 transitions. [2018-10-23 18:28:41,254 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 42211 transitions. Word has length 364 [2018-10-23 18:28:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:41,255 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 42211 transitions. [2018-10-23 18:28:41,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:28:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 42211 transitions. [2018-10-23 18:28:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-23 18:28:41,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:41,275 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:41,276 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:41,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1196298390, now seen corresponding path program 1 times [2018-10-23 18:28:41,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:41,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:41,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:41,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:41,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-23 18:28:41,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:41,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:28:41,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:28:41,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:28:41,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:28:41,643 INFO L87 Difference]: Start difference. First operand 37715 states and 42211 transitions. Second operand 3 states. [2018-10-23 18:28:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:45,075 INFO L93 Difference]: Finished difference Result 84370 states and 94650 transitions. [2018-10-23 18:28:45,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:28:45,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 435 [2018-10-23 18:28:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:45,131 INFO L225 Difference]: With dead ends: 84370 [2018-10-23 18:28:45,131 INFO L226 Difference]: Without dead ends: 43645 [2018-10-23 18:28:45,159 INFO L605 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 [2018-10-23 18:28:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2018-10-23 18:28:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 40650. [2018-10-23 18:28:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40650 states. [2018-10-23 18:28:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40650 states to 40650 states and 45488 transitions. [2018-10-23 18:28:45,670 INFO L78 Accepts]: Start accepts. Automaton has 40650 states and 45488 transitions. Word has length 435 [2018-10-23 18:28:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:45,671 INFO L481 AbstractCegarLoop]: Abstraction has 40650 states and 45488 transitions. [2018-10-23 18:28:45,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:28:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 40650 states and 45488 transitions. [2018-10-23 18:28:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-23 18:28:45,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:45,692 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:45,692 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:45,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:45,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1005073612, now seen corresponding path program 1 times [2018-10-23 18:28:45,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:45,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:45,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:45,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:45,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-23 18:28:46,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:46,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:28:46,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:28:46,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:28:46,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:46,620 INFO L87 Difference]: Start difference. First operand 40650 states and 45488 transitions. Second operand 4 states. [2018-10-23 18:28:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:56,024 INFO L93 Difference]: Finished difference Result 106886 states and 119200 transitions. [2018-10-23 18:28:56,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:56,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2018-10-23 18:28:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:56,095 INFO L225 Difference]: With dead ends: 106886 [2018-10-23 18:28:56,095 INFO L226 Difference]: Without dead ends: 62808 [2018-10-23 18:28:56,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62808 states. [2018-10-23 18:28:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62808 to 55547. [2018-10-23 18:28:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55547 states. [2018-10-23 18:28:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55547 states to 55547 states and 60693 transitions. [2018-10-23 18:28:56,776 INFO L78 Accepts]: Start accepts. Automaton has 55547 states and 60693 transitions. Word has length 454 [2018-10-23 18:28:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:56,780 INFO L481 AbstractCegarLoop]: Abstraction has 55547 states and 60693 transitions. [2018-10-23 18:28:56,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:28:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55547 states and 60693 transitions. [2018-10-23 18:28:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-10-23 18:28:56,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:56,795 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 18:28:56,796 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:56,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2132845443, now seen corresponding path program 1 times [2018-10-23 18:28:56,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:56,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:56,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:56,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:56,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-23 18:28:57,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:57,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:28:57,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:28:57,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:28:57,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:28:57,337 INFO L87 Difference]: Start difference. First operand 55547 states and 60693 transitions. Second operand 3 states. [2018-10-23 18:29:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:03,663 INFO L93 Difference]: Finished difference Result 121322 states and 132505 transitions. [2018-10-23 18:29:03,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:29:03,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 473 [2018-10-23 18:29:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:03,733 INFO L225 Difference]: With dead ends: 121322 [2018-10-23 18:29:03,734 INFO L226 Difference]: Without dead ends: 66203 [2018-10-23 18:29:03,769 INFO L605 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 [2018-10-23 18:29:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66203 states. [2018-10-23 18:29:04,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66203 to 64068. [2018-10-23 18:29:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64068 states. [2018-10-23 18:29:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64068 states to 64068 states and 69183 transitions. [2018-10-23 18:29:04,431 INFO L78 Accepts]: Start accepts. Automaton has 64068 states and 69183 transitions. Word has length 473 [2018-10-23 18:29:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:04,432 INFO L481 AbstractCegarLoop]: Abstraction has 64068 states and 69183 transitions. [2018-10-23 18:29:04,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:29:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 64068 states and 69183 transitions. [2018-10-23 18:29:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-10-23 18:29:04,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:04,447 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:29:04,447 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:04,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:04,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1105582606, now seen corresponding path program 1 times [2018-10-23 18:29:04,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:04,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:04,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:04,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:04,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:05,018 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-23 18:29:05,452 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-23 18:29:05,647 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-10-23 18:29:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 18:29:06,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:29:06,459 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:29:06,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:06,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:29:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 53 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:29:08,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:29:08,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-23 18:29:08,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 18:29:08,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 18:29:08,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-10-23 18:29:08,959 INFO L87 Difference]: Start difference. First operand 64068 states and 69183 transitions. Second operand 14 states. [2018-10-23 18:29:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:41,649 INFO L93 Difference]: Finished difference Result 136319 states and 147207 transitions. [2018-10-23 18:29:41,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 18:29:41,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 499 [2018-10-23 18:29:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:41,716 INFO L225 Difference]: With dead ends: 136319 [2018-10-23 18:29:41,716 INFO L226 Difference]: Without dead ends: 72679 [2018-10-23 18:29:41,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-10-23 18:29:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72679 states. [2018-10-23 18:29:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72679 to 62776. [2018-10-23 18:29:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62776 states. [2018-10-23 18:29:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62776 states to 62776 states and 67684 transitions. [2018-10-23 18:29:42,320 INFO L78 Accepts]: Start accepts. Automaton has 62776 states and 67684 transitions. Word has length 499 [2018-10-23 18:29:42,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:42,320 INFO L481 AbstractCegarLoop]: Abstraction has 62776 states and 67684 transitions. [2018-10-23 18:29:42,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 18:29:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 62776 states and 67684 transitions. [2018-10-23 18:29:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-10-23 18:29:42,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:42,336 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:29:42,336 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:42,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash -950165895, now seen corresponding path program 1 times [2018-10-23 18:29:42,337 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:42,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:42,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:42,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:42,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:42,976 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-10-23 18:29:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 779 proven. 66 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-23 18:29:43,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:29:43,371 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:29:43,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:43,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:29:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 845 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-23 18:29:44,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:29:44,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-10-23 18:29:44,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:29:44,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:29:44,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:29:44,330 INFO L87 Difference]: Start difference. First operand 62776 states and 67684 transitions. Second operand 8 states. [2018-10-23 18:29:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:53,723 INFO L93 Difference]: Finished difference Result 129806 states and 139873 transitions. [2018-10-23 18:29:53,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 18:29:53,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 596 [2018-10-23 18:29:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:53,793 INFO L225 Difference]: With dead ends: 129806 [2018-10-23 18:29:53,793 INFO L226 Difference]: Without dead ends: 67031 [2018-10-23 18:29:53,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:29:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67031 states. [2018-10-23 18:29:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67031 to 63623. [2018-10-23 18:29:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63623 states. [2018-10-23 18:29:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63623 states to 63623 states and 68225 transitions. [2018-10-23 18:29:54,436 INFO L78 Accepts]: Start accepts. Automaton has 63623 states and 68225 transitions. Word has length 596 [2018-10-23 18:29:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:54,436 INFO L481 AbstractCegarLoop]: Abstraction has 63623 states and 68225 transitions. [2018-10-23 18:29:54,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:29:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 63623 states and 68225 transitions. [2018-10-23 18:29:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-10-23 18:29:54,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:54,453 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:29:54,453 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:54,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1946805059, now seen corresponding path program 1 times [2018-10-23 18:29:54,453 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:54,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:54,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:54,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:54,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 368 proven. 248 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 18:29:55,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:29:55,819 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:29:55,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:55,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:30:03,512 WARN L179 SmtUtils]: Spent 7.19 s on a formula simplification. DAG size of input: 122 DAG size of output: 21 [2018-10-23 18:30:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-23 18:30:04,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:30:04,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 18:30:04,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:30:04,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:30:04,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:30:04,219 INFO L87 Difference]: Start difference. First operand 63623 states and 68225 transitions. Second operand 8 states. [2018-10-23 18:30:12,642 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 Received shutdown request... [2018-10-23 18:31:11,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:31:11,273 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:31:11,278 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:31:11,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:31:11 BoogieIcfgContainer [2018-10-23 18:31:11,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:31:11,280 INFO L168 Benchmark]: Toolchain (without parser) took 244501.18 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 688.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:31:11,281 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:31:11,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1635.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:31:11,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 506.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -924.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:31:11,283 INFO L168 Benchmark]: Boogie Preprocessor took 260.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:31:11,284 INFO L168 Benchmark]: RCFGBuilder took 9624.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 476.8 MB). Peak memory consumption was 476.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:31:11,285 INFO L168 Benchmark]: TraceAbstraction took 232468.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 157.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:31:11,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1635.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 506.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -924.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 260.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9624.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 476.8 MB). Peak memory consumption was 476.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232468.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 157.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 65). Cancelled while BasicCegarLoop was constructing difference of abstraction (63623states) and FLOYD_HOARE automaton (currently 11 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (58007 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 232.3s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 205.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5612 SDtfs, 24132 SDslu, 2775 SDs, 0 SdLazy, 54358 SolverSat, 7323 SolverUnsat, 38 SolverUnknown, 0 SolverNotchecked, 186.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2245 GetRequests, 2181 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 34331 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 6660 NumberOfCodeBlocks, 6660 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6642 ConstructedInterpolants, 418 QuantifiedInterpolants, 15795649 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2764 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 6005/6865 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown