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/Problem16_label05_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:26:16,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:26:16,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:26:16,890 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:26:16,890 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:26:16,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:26:16,895 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:26:16,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:26:16,900 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:26:16,900 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:26:16,901 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:26:16,902 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:26:16,903 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:26:16,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:26:16,905 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:26:16,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:26:16,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:26:16,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:26:16,910 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:26:16,912 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:26:16,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:26:16,915 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:26:16,917 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:26:16,925 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:26:16,940 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:26:16,940 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:26:16,941 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:26:16,941 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:26:16,942 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:26:16,942 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:26:16,942 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:26:16,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:26:16,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:26:16,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:26:16,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:26:16,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:26:16,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:26:16,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:26:16,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:26:16,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:26:16,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:26:16,944 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:26:16,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:26:16,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:26:16,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:26:16,945 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:26:16,945 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:26:16,946 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:26:16,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:26:16,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:26:16,946 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:26:16,946 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:26:16,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:26:17,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:26:17,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:26:17,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:26:17,013 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:26:17,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05_false-unreach-call.c [2018-10-26 19:26:17,072 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1581d754/224d1d6bf27e4e9fa8b3a88a67ab2fd5/FLAG3bf78d814 [2018-10-26 19:26:17,746 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:26:17,747 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label05_false-unreach-call.c [2018-10-26 19:26:17,765 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1581d754/224d1d6bf27e4e9fa8b3a88a67ab2fd5/FLAG3bf78d814 [2018-10-26 19:26:17,780 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1581d754/224d1d6bf27e4e9fa8b3a88a67ab2fd5 [2018-10-26 19:26:17,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:26:17,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:26:17,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:26:17,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:26:17,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:26:17,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:26:17" (1/1) ... [2018-10-26 19:26:17,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:17, skipping insertion in model container [2018-10-26 19:26:17,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:26:17" (1/1) ... [2018-10-26 19:26:17,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:26:17,904 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:26:18,735 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:26:18,739 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:26:19,012 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:26:19,034 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:26:19,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19 WrapperNode [2018-10-26 19:26:19,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:26:19,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:26:19,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:26:19,037 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:26:19,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:26:19,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:26:19,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:26:19,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:26:19,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... [2018-10-26 19:26:19,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:26:19,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:26:19,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:26:19,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:26:19,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:26:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:26:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:26:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:26:26,904 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:26:26,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:26:26 BoogieIcfgContainer [2018-10-26 19:26:26,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:26:26,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:26:26,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:26:26,910 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:26:26,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:26:17" (1/3) ... [2018-10-26 19:26:26,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:26:26, skipping insertion in model container [2018-10-26 19:26:26,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:26:19" (2/3) ... [2018-10-26 19:26:26,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:26:26, skipping insertion in model container [2018-10-26 19:26:26,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:26:26" (3/3) ... [2018-10-26 19:26:26,917 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label05_false-unreach-call.c [2018-10-26 19:26:26,928 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:26:26,936 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:26:26,954 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:26:26,993 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:26:26,994 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:26:26,994 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:26:26,995 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:26:26,995 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:26:26,995 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:26:26,995 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:26:26,995 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:26:26,995 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:26:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-10-26 19:26:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 19:26:27,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:26:27,031 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] [2018-10-26 19:26:27,034 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:26:27,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:26:27,041 INFO L82 PathProgramCache]: Analyzing trace with hash 183950178, now seen corresponding path program 1 times [2018-10-26 19:26:27,043 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:26:27,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:26:27,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:27,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:26:27,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:26:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:26:27,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:26:27,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:26:27,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:26:27,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:26:27,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:26:27,432 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2018-10-26 19:26:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:26:34,028 INFO L93 Difference]: Finished difference Result 1473 states and 2781 transitions. [2018-10-26 19:26:34,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:26:34,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-26 19:26:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:26:34,068 INFO L225 Difference]: With dead ends: 1473 [2018-10-26 19:26:34,068 INFO L226 Difference]: Without dead ends: 1069 [2018-10-26 19:26:34,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:26:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-26 19:26:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 724. [2018-10-26 19:26:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-26 19:26:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1277 transitions. [2018-10-26 19:26:34,179 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1277 transitions. Word has length 20 [2018-10-26 19:26:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:26:34,180 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1277 transitions. [2018-10-26 19:26:34,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:26:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1277 transitions. [2018-10-26 19:26:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-26 19:26:34,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:26:34,184 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] [2018-10-26 19:26:34,184 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:26:34,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:26:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash 832241570, now seen corresponding path program 1 times [2018-10-26 19:26:34,185 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:26:34,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:26:34,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:34,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:26:34,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:26:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:26:34,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:26:34,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:26:34,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:26:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:26:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:26:34,405 INFO L87 Difference]: Start difference. First operand 724 states and 1277 transitions. Second operand 4 states. [2018-10-26 19:26:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:26:40,024 INFO L93 Difference]: Finished difference Result 2766 states and 4980 transitions. [2018-10-26 19:26:40,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:26:40,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-26 19:26:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:26:40,038 INFO L225 Difference]: With dead ends: 2766 [2018-10-26 19:26:40,038 INFO L226 Difference]: Without dead ends: 2044 [2018-10-26 19:26:40,042 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 [2018-10-26 19:26:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2018-10-26 19:26:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2018-10-26 19:26:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2018-10-26 19:26:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3249 transitions. [2018-10-26 19:26:40,105 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3249 transitions. Word has length 87 [2018-10-26 19:26:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:26:40,105 INFO L481 AbstractCegarLoop]: Abstraction has 2044 states and 3249 transitions. [2018-10-26 19:26:40,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:26:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3249 transitions. [2018-10-26 19:26:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 19:26:40,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:26:40,109 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] [2018-10-26 19:26:40,110 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:26:40,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:26:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1850634171, now seen corresponding path program 1 times [2018-10-26 19:26:40,110 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:26:40,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:26:40,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:40,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:26:40,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:26:40,617 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2018-10-26 19:26:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:26:40,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:26:40,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:26:40,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:26:40,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:26:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:26:40,655 INFO L87 Difference]: Start difference. First operand 2044 states and 3249 transitions. Second operand 6 states. [2018-10-26 19:26:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:26:48,598 INFO L93 Difference]: Finished difference Result 6728 states and 10478 transitions. [2018-10-26 19:26:48,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:26:48,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-26 19:26:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:26:48,634 INFO L225 Difference]: With dead ends: 6728 [2018-10-26 19:26:48,634 INFO L226 Difference]: Without dead ends: 4686 [2018-10-26 19:26:48,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:26:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2018-10-26 19:26:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4686. [2018-10-26 19:26:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2018-10-26 19:26:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 6895 transitions. [2018-10-26 19:26:48,730 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 6895 transitions. Word has length 100 [2018-10-26 19:26:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:26:48,731 INFO L481 AbstractCegarLoop]: Abstraction has 4686 states and 6895 transitions. [2018-10-26 19:26:48,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:26:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 6895 transitions. [2018-10-26 19:26:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-26 19:26:48,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:26:48,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:26:48,738 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:26:48,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:26:48,738 INFO L82 PathProgramCache]: Analyzing trace with hash -852110444, now seen corresponding path program 1 times [2018-10-26 19:26:48,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:26:48,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:26:48,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:48,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:26:48,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:26:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-26 19:26:48,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:26:48,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:26:48,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:26:48,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:26:48,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:26:48,945 INFO L87 Difference]: Start difference. First operand 4686 states and 6895 transitions. Second operand 3 states. [2018-10-26 19:26:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:26:51,437 INFO L93 Difference]: Finished difference Result 12998 states and 19544 transitions. [2018-10-26 19:26:51,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:26:51,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-10-26 19:26:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:26:51,478 INFO L225 Difference]: With dead ends: 12998 [2018-10-26 19:26:51,478 INFO L226 Difference]: Without dead ends: 8646 [2018-10-26 19:26:51,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:26:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2018-10-26 19:26:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2018-10-26 19:26:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2018-10-26 19:26:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 12001 transitions. [2018-10-26 19:26:51,671 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 12001 transitions. Word has length 188 [2018-10-26 19:26:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:26:51,672 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 12001 transitions. [2018-10-26 19:26:51,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:26:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 12001 transitions. [2018-10-26 19:26:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-26 19:26:51,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:26:51,680 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:26:51,681 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:26:51,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:26:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash -382813575, now seen corresponding path program 1 times [2018-10-26 19:26:51,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:26:51,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:26:51,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:51,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:26:51,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:26:52,137 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 19:26:52,347 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-26 19:26:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-10-26 19:26:52,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:26:52,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:26:52,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:26:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:26:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:26:52,787 INFO L87 Difference]: Start difference. First operand 8646 states and 12001 transitions. Second operand 7 states. [2018-10-26 19:26:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:26:58,690 INFO L93 Difference]: Finished difference Result 17367 states and 24077 transitions. [2018-10-26 19:26:58,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:26:58,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2018-10-26 19:26:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:26:58,726 INFO L225 Difference]: With dead ends: 17367 [2018-10-26 19:26:58,726 INFO L226 Difference]: Without dead ends: 8723 [2018-10-26 19:26:58,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:26:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2018-10-26 19:26:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 8644. [2018-10-26 19:26:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8644 states. [2018-10-26 19:26:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8644 states to 8644 states and 11991 transitions. [2018-10-26 19:26:58,904 INFO L78 Accepts]: Start accepts. Automaton has 8644 states and 11991 transitions. Word has length 344 [2018-10-26 19:26:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:26:58,905 INFO L481 AbstractCegarLoop]: Abstraction has 8644 states and 11991 transitions. [2018-10-26 19:26:58,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:26:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8644 states and 11991 transitions. [2018-10-26 19:26:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-10-26 19:26:58,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:26:58,919 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:26:58,919 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:26:58,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:26:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1499308984, now seen corresponding path program 1 times [2018-10-26 19:26:58,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:26:58,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:26:58,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:58,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:26:58,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:26:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:26:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-10-26 19:26:59,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:26:59,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:26:59,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:26:59,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:26:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:26:59,265 INFO L87 Difference]: Start difference. First operand 8644 states and 11991 transitions. Second operand 3 states. [2018-10-26 19:27:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:01,686 INFO L93 Difference]: Finished difference Result 17286 states and 23997 transitions. [2018-10-26 19:27:01,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:27:01,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 432 [2018-10-26 19:27:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:01,702 INFO L225 Difference]: With dead ends: 17286 [2018-10-26 19:27:01,702 INFO L226 Difference]: Without dead ends: 6982 [2018-10-26 19:27:01,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:27:01,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2018-10-26 19:27:01,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6652. [2018-10-26 19:27:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6652 states. [2018-10-26 19:27:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6652 states to 6652 states and 7477 transitions. [2018-10-26 19:27:01,807 INFO L78 Accepts]: Start accepts. Automaton has 6652 states and 7477 transitions. Word has length 432 [2018-10-26 19:27:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:01,807 INFO L481 AbstractCegarLoop]: Abstraction has 6652 states and 7477 transitions. [2018-10-26 19:27:01,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:27:01,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6652 states and 7477 transitions. [2018-10-26 19:27:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-26 19:27:01,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:01,817 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:01,818 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:01,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:01,818 INFO L82 PathProgramCache]: Analyzing trace with hash -613698571, now seen corresponding path program 1 times [2018-10-26 19:27:01,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:01,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:01,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:01,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:01,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:02,392 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:27:02,773 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 19:27:03,104 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-10-26 19:27:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 240 proven. 65 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 19:27:04,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:27:04,441 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:27:04,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:04,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:27:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-26 19:27:05,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:27:05,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2018-10-26 19:27:05,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:27:05,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:27:05,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:27:05,018 INFO L87 Difference]: Start difference. First operand 6652 states and 7477 transitions. Second operand 9 states. [2018-10-26 19:27:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:12,573 INFO L93 Difference]: Finished difference Result 16292 states and 18243 transitions. [2018-10-26 19:27:12,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:27:12,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 448 [2018-10-26 19:27:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:12,591 INFO L225 Difference]: With dead ends: 16292 [2018-10-26 19:27:12,591 INFO L226 Difference]: Without dead ends: 9972 [2018-10-26 19:27:12,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 447 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:27:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2018-10-26 19:27:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 9292. [2018-10-26 19:27:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9292 states. [2018-10-26 19:27:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9292 states to 9292 states and 10240 transitions. [2018-10-26 19:27:12,752 INFO L78 Accepts]: Start accepts. Automaton has 9292 states and 10240 transitions. Word has length 448 [2018-10-26 19:27:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:12,753 INFO L481 AbstractCegarLoop]: Abstraction has 9292 states and 10240 transitions. [2018-10-26 19:27:12,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:27:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9292 states and 10240 transitions. [2018-10-26 19:27:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-10-26 19:27:12,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:12,865 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:12,866 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:12,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:12,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1823474811, now seen corresponding path program 1 times [2018-10-26 19:27:12,866 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:12,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:12,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:12,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:12,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-26 19:27:13,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:27:13,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:27:13,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:27:13,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:27:13,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:27:13,460 INFO L87 Difference]: Start difference. First operand 9292 states and 10240 transitions. Second operand 4 states. [2018-10-26 19:27:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:16,845 INFO L93 Difference]: Finished difference Result 20892 states and 23071 transitions. [2018-10-26 19:27:16,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:27:16,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 574 [2018-10-26 19:27:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:16,865 INFO L225 Difference]: With dead ends: 20892 [2018-10-26 19:27:16,865 INFO L226 Difference]: Without dead ends: 11600 [2018-10-26 19:27:16,875 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 [2018-10-26 19:27:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2018-10-26 19:27:17,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 11270. [2018-10-26 19:27:17,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11270 states. [2018-10-26 19:27:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11270 states to 11270 states and 12074 transitions. [2018-10-26 19:27:17,019 INFO L78 Accepts]: Start accepts. Automaton has 11270 states and 12074 transitions. Word has length 574 [2018-10-26 19:27:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:17,020 INFO L481 AbstractCegarLoop]: Abstraction has 11270 states and 12074 transitions. [2018-10-26 19:27:17,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:27:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11270 states and 12074 transitions. [2018-10-26 19:27:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2018-10-26 19:27:17,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:17,044 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:17,044 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:17,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:17,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1992105334, now seen corresponding path program 1 times [2018-10-26 19:27:17,045 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:17,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:17,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:17,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:17,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 19:27:17,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:27:17,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:27:17,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:27:17,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:27:17,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:27:17,761 INFO L87 Difference]: Start difference. First operand 11270 states and 12074 transitions. Second operand 4 states. [2018-10-26 19:27:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:21,735 INFO L93 Difference]: Finished difference Result 25178 states and 27080 transitions. [2018-10-26 19:27:21,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:27:21,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 675 [2018-10-26 19:27:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:21,754 INFO L225 Difference]: With dead ends: 25178 [2018-10-26 19:27:21,755 INFO L226 Difference]: Without dead ends: 14240 [2018-10-26 19:27:21,766 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 [2018-10-26 19:27:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14240 states. [2018-10-26 19:27:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14240 to 13910. [2018-10-26 19:27:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13910 states. [2018-10-26 19:27:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13910 states to 13910 states and 14764 transitions. [2018-10-26 19:27:21,930 INFO L78 Accepts]: Start accepts. Automaton has 13910 states and 14764 transitions. Word has length 675 [2018-10-26 19:27:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:21,931 INFO L481 AbstractCegarLoop]: Abstraction has 13910 states and 14764 transitions. [2018-10-26 19:27:21,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:27:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 13910 states and 14764 transitions. [2018-10-26 19:27:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-10-26 19:27:21,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:21,950 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:21,951 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:21,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:21,951 INFO L82 PathProgramCache]: Analyzing trace with hash 813981583, now seen corresponding path program 1 times [2018-10-26 19:27:21,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:21,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:21,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:21,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:21,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:22,579 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 19:27:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 54 proven. 220 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2018-10-26 19:27:23,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:27:23,334 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:27:23,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:23,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:27:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2018-10-26 19:27:23,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:27:23,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-26 19:27:23,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:27:23,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:27:23,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:27:23,936 INFO L87 Difference]: Start difference. First operand 13910 states and 14764 transitions. Second operand 8 states. [2018-10-26 19:27:28,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:28,378 INFO L93 Difference]: Finished difference Result 27632 states and 29338 transitions. [2018-10-26 19:27:28,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:27:28,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 835 [2018-10-26 19:27:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:28,394 INFO L225 Difference]: With dead ends: 27632 [2018-10-26 19:27:28,395 INFO L226 Difference]: Without dead ends: 14054 [2018-10-26 19:27:28,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 836 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:27:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2018-10-26 19:27:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 13250. [2018-10-26 19:27:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13250 states. [2018-10-26 19:27:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13250 states to 13250 states and 13941 transitions. [2018-10-26 19:27:28,703 INFO L78 Accepts]: Start accepts. Automaton has 13250 states and 13941 transitions. Word has length 835 [2018-10-26 19:27:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:28,705 INFO L481 AbstractCegarLoop]: Abstraction has 13250 states and 13941 transitions. [2018-10-26 19:27:28,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:27:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13250 states and 13941 transitions. [2018-10-26 19:27:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1228 [2018-10-26 19:27:28,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:28,737 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 19:27:28,737 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:28,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:28,738 INFO L82 PathProgramCache]: Analyzing trace with hash -621107017, now seen corresponding path program 1 times [2018-10-26 19:27:28,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:28,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:28,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:28,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:28,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:29,723 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:27:30,008 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 19:27:30,338 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 19:27:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1770 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2018-10-26 19:27:32,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:27:32,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:27:32,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:27:32,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:27:32,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:27:32,164 INFO L87 Difference]: Start difference. First operand 13250 states and 13941 transitions. Second operand 6 states. [2018-10-26 19:27:35,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:35,157 INFO L93 Difference]: Finished difference Result 27972 states and 29380 transitions. [2018-10-26 19:27:35,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:27:35,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1227 [2018-10-26 19:27:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:35,176 INFO L225 Difference]: With dead ends: 27972 [2018-10-26 19:27:35,176 INFO L226 Difference]: Without dead ends: 15054 [2018-10-26 19:27:35,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:27:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2018-10-26 19:27:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 14570. [2018-10-26 19:27:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14570 states. [2018-10-26 19:27:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14570 states to 14570 states and 15272 transitions. [2018-10-26 19:27:35,352 INFO L78 Accepts]: Start accepts. Automaton has 14570 states and 15272 transitions. Word has length 1227 [2018-10-26 19:27:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:35,354 INFO L481 AbstractCegarLoop]: Abstraction has 14570 states and 15272 transitions. [2018-10-26 19:27:35,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:27:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 14570 states and 15272 transitions. [2018-10-26 19:27:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2018-10-26 19:27:35,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:35,390 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:35,390 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:35,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1167487614, now seen corresponding path program 1 times [2018-10-26 19:27:35,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:35,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:35,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:35,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:35,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2823 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2018-10-26 19:27:37,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:27:37,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:27:37,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:27:37,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:27:37,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:27:37,213 INFO L87 Difference]: Start difference. First operand 14570 states and 15272 transitions. Second operand 4 states. [2018-10-26 19:27:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:39,745 INFO L93 Difference]: Finished difference Result 35070 states and 36795 transitions. [2018-10-26 19:27:39,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:27:39,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1238 [2018-10-26 19:27:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:39,762 INFO L225 Difference]: With dead ends: 35070 [2018-10-26 19:27:39,762 INFO L226 Difference]: Without dead ends: 17182 [2018-10-26 19:27:39,770 INFO L605 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 [2018-10-26 19:27:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17182 states. [2018-10-26 19:27:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17182 to 16852. [2018-10-26 19:27:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16852 states. [2018-10-26 19:27:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16852 states to 16852 states and 17364 transitions. [2018-10-26 19:27:39,958 INFO L78 Accepts]: Start accepts. Automaton has 16852 states and 17364 transitions. Word has length 1238 [2018-10-26 19:27:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:39,960 INFO L481 AbstractCegarLoop]: Abstraction has 16852 states and 17364 transitions. [2018-10-26 19:27:39,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:27:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 16852 states and 17364 transitions. [2018-10-26 19:27:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2018-10-26 19:27:39,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:39,995 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:39,995 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:39,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash -170585411, now seen corresponding path program 1 times [2018-10-26 19:27:39,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:39,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:39,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:39,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:39,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3761 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 3618 trivial. 0 not checked. [2018-10-26 19:27:41,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:27:41,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:27:41,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:27:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:27:41,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:27:41,843 INFO L87 Difference]: Start difference. First operand 16852 states and 17364 transitions. Second operand 4 states. [2018-10-26 19:27:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:27:43,990 INFO L93 Difference]: Finished difference Result 33702 states and 34735 transitions. [2018-10-26 19:27:43,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:27:43,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1401 [2018-10-26 19:27:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:27:44,007 INFO L225 Difference]: With dead ends: 33702 [2018-10-26 19:27:44,008 INFO L226 Difference]: Without dead ends: 15858 [2018-10-26 19:27:44,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:27:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15858 states. [2018-10-26 19:27:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15858 to 15528. [2018-10-26 19:27:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15528 states. [2018-10-26 19:27:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 15903 transitions. [2018-10-26 19:27:44,176 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 15903 transitions. Word has length 1401 [2018-10-26 19:27:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:27:44,177 INFO L481 AbstractCegarLoop]: Abstraction has 15528 states and 15903 transitions. [2018-10-26 19:27:44,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:27:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 15903 transitions. [2018-10-26 19:27:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1841 [2018-10-26 19:27:44,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:27:44,214 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:27:44,214 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:27:44,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:27:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash -357593829, now seen corresponding path program 1 times [2018-10-26 19:27:44,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:27:44,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:27:44,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:44,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:44,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:27:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:45,794 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:27:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5634 backedges. 2494 proven. 243 refuted. 0 times theorem prover too weak. 2897 trivial. 0 not checked. [2018-10-26 19:27:49,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:27:49,979 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:27:49,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:27:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:27:50,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:27:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5634 backedges. 2494 proven. 0 refuted. 0 times theorem prover too weak. 3140 trivial. 0 not checked. [2018-10-26 19:27:52,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:27:52,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-10-26 19:27:52,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:27:52,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:27:52,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:27:52,936 INFO L87 Difference]: Start difference. First operand 15528 states and 15903 transitions. Second operand 10 states. [2018-10-26 19:28:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:28:00,902 INFO L93 Difference]: Finished difference Result 33040 states and 33839 transitions. [2018-10-26 19:28:00,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:28:00,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1840 [2018-10-26 19:28:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:28:00,918 INFO L225 Difference]: With dead ends: 33040 [2018-10-26 19:28:00,918 INFO L226 Difference]: Without dead ends: 17844 [2018-10-26 19:28:00,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1856 GetRequests, 1839 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-10-26 19:28:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2018-10-26 19:28:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 15858. [2018-10-26 19:28:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15858 states. [2018-10-26 19:28:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15858 states to 15858 states and 16235 transitions. [2018-10-26 19:28:01,077 INFO L78 Accepts]: Start accepts. Automaton has 15858 states and 16235 transitions. Word has length 1840 [2018-10-26 19:28:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:28:01,078 INFO L481 AbstractCegarLoop]: Abstraction has 15858 states and 16235 transitions. [2018-10-26 19:28:01,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:28:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 15858 states and 16235 transitions. [2018-10-26 19:28:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1872 [2018-10-26 19:28:01,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:28:01,105 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:28:01,105 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:28:01,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:28:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2065057755, now seen corresponding path program 1 times [2018-10-26 19:28:01,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:28:01,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:28:01,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:01,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:01,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:01,945 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-26 19:28:02,231 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-26 19:28:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6270 backedges. 2407 proven. 158 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2018-10-26 19:28:05,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:28:05,094 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:28:05,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:05,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:28:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6270 backedges. 2565 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2018-10-26 19:28:07,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:28:07,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-26 19:28:07,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:28:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:28:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:28:07,674 INFO L87 Difference]: Start difference. First operand 15858 states and 16235 transitions. Second operand 10 states. [2018-10-26 19:28:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:28:15,596 INFO L93 Difference]: Finished difference Result 43040 states and 44142 transitions. [2018-10-26 19:28:15,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 19:28:15,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1871 [2018-10-26 19:28:15,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:28:15,622 INFO L225 Difference]: With dead ends: 43040 [2018-10-26 19:28:15,622 INFO L226 Difference]: Without dead ends: 27514 [2018-10-26 19:28:15,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1901 GetRequests, 1881 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2018-10-26 19:28:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27514 states. [2018-10-26 19:28:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27514 to 22184. [2018-10-26 19:28:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22184 states. [2018-10-26 19:28:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22184 states to 22184 states and 22683 transitions. [2018-10-26 19:28:15,967 INFO L78 Accepts]: Start accepts. Automaton has 22184 states and 22683 transitions. Word has length 1871 [2018-10-26 19:28:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:28:15,967 INFO L481 AbstractCegarLoop]: Abstraction has 22184 states and 22683 transitions. [2018-10-26 19:28:15,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:28:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 22184 states and 22683 transitions. [2018-10-26 19:28:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2281 [2018-10-26 19:28:16,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:28:16,004 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:28:16,005 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:28:16,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:28:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1235059713, now seen corresponding path program 1 times [2018-10-26 19:28:16,006 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:28:16,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:28:16,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:16,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:16,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9625 backedges. 2180 proven. 0 refuted. 0 times theorem prover too weak. 7445 trivial. 0 not checked. [2018-10-26 19:28:19,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:28:19,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:28:19,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:28:19,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:28:19,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:28:19,310 INFO L87 Difference]: Start difference. First operand 22184 states and 22683 transitions. Second operand 3 states. [2018-10-26 19:28:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:28:20,667 INFO L93 Difference]: Finished difference Result 45686 states and 46709 transitions. [2018-10-26 19:28:20,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:28:20,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2280 [2018-10-26 19:28:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:28:20,690 INFO L225 Difference]: With dead ends: 45686 [2018-10-26 19:28:20,690 INFO L226 Difference]: Without dead ends: 23172 [2018-10-26 19:28:20,703 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 [2018-10-26 19:28:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23172 states. [2018-10-26 19:28:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23172 to 22182. [2018-10-26 19:28:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22182 states. [2018-10-26 19:28:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22182 states to 22182 states and 22638 transitions. [2018-10-26 19:28:20,898 INFO L78 Accepts]: Start accepts. Automaton has 22182 states and 22638 transitions. Word has length 2280 [2018-10-26 19:28:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:28:20,899 INFO L481 AbstractCegarLoop]: Abstraction has 22182 states and 22638 transitions. [2018-10-26 19:28:20,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:28:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 22182 states and 22638 transitions. [2018-10-26 19:28:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2316 [2018-10-26 19:28:20,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:28:20,945 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:28:20,945 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:28:20,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:28:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2139992758, now seen corresponding path program 1 times [2018-10-26 19:28:20,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:28:20,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:28:20,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:20,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:20,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:22,364 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:28:23,058 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2018-10-26 19:28:23,436 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2018-10-26 19:28:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9534 backedges. 4084 proven. 251 refuted. 0 times theorem prover too weak. 5199 trivial. 0 not checked. [2018-10-26 19:28:29,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:28:29,188 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 [2018-10-26 19:28:29,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:29,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:28:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9534 backedges. 5492 proven. 0 refuted. 0 times theorem prover too weak. 4042 trivial. 0 not checked. [2018-10-26 19:28:32,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:28:32,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-26 19:28:32,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:28:32,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:28:32,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:28:32,785 INFO L87 Difference]: Start difference. First operand 22182 states and 22638 transitions. Second operand 9 states. [2018-10-26 19:28:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:28:41,353 INFO L93 Difference]: Finished difference Result 47070 states and 48022 transitions. [2018-10-26 19:28:41,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:28:41,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2315 [2018-10-26 19:28:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:28:41,378 INFO L225 Difference]: With dead ends: 47070 [2018-10-26 19:28:41,378 INFO L226 Difference]: Without dead ends: 25220 [2018-10-26 19:28:41,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2334 GetRequests, 2318 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:28:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25220 states. [2018-10-26 19:28:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25220 to 21065. [2018-10-26 19:28:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21065 states. [2018-10-26 19:28:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21065 states to 21065 states and 21412 transitions. [2018-10-26 19:28:41,589 INFO L78 Accepts]: Start accepts. Automaton has 21065 states and 21412 transitions. Word has length 2315 [2018-10-26 19:28:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:28:41,590 INFO L481 AbstractCegarLoop]: Abstraction has 21065 states and 21412 transitions. [2018-10-26 19:28:41,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:28:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 21065 states and 21412 transitions. [2018-10-26 19:28:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2669 [2018-10-26 19:28:41,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:28:41,715 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:28:41,716 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:28:41,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:28:41,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1700302108, now seen corresponding path program 1 times [2018-10-26 19:28:41,717 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:28:41,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:28:41,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:41,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:41,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:28:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:44,276 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 19:28:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11795 backedges. 8386 proven. 1504 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2018-10-26 19:28:52,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:28:52,344 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:28:52,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:28:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:28:52,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:28:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11795 backedges. 7341 proven. 0 refuted. 0 times theorem prover too weak. 4454 trivial. 0 not checked. [2018-10-26 19:28:56,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:28:56,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-26 19:28:56,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:28:56,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:28:56,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:28:56,708 INFO L87 Difference]: Start difference. First operand 21065 states and 21412 transitions. Second operand 11 states. [2018-10-26 19:29:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:29:04,499 INFO L93 Difference]: Finished difference Result 42490 states and 43193 transitions. [2018-10-26 19:29:04,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 19:29:04,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2668 [2018-10-26 19:29:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:29:04,525 INFO L225 Difference]: With dead ends: 42490 [2018-10-26 19:29:04,525 INFO L226 Difference]: Without dead ends: 21757 [2018-10-26 19:29:04,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2689 GetRequests, 2671 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:29:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2018-10-26 19:29:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21725. [2018-10-26 19:29:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21725 states. [2018-10-26 19:29:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21725 states to 21725 states and 22071 transitions. [2018-10-26 19:29:04,778 INFO L78 Accepts]: Start accepts. Automaton has 21725 states and 22071 transitions. Word has length 2668 [2018-10-26 19:29:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:29:04,779 INFO L481 AbstractCegarLoop]: Abstraction has 21725 states and 22071 transitions. [2018-10-26 19:29:04,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 19:29:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 21725 states and 22071 transitions. [2018-10-26 19:29:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2696 [2018-10-26 19:29:04,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:29:04,831 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2018-10-26 19:29:04,831 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:29:04,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:29:04,832 INFO L82 PathProgramCache]: Analyzing trace with hash 999630116, now seen corresponding path program 1 times [2018-10-26 19:29:04,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:29:04,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:29:04,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:04,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:29:04,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:29:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12565 backedges. 2207 proven. 18 refuted. 0 times theorem prover too weak. 10340 trivial. 0 not checked. [2018-10-26 19:29:09,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:29:09,396 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:29:09,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:29:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:29:10,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:29:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12565 backedges. 2207 proven. 18 refuted. 0 times theorem prover too weak. 10340 trivial. 0 not checked. [2018-10-26 19:29:13,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:29:13,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-10-26 19:29:13,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:29:13,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:29:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:29:13,077 INFO L87 Difference]: Start difference. First operand 21725 states and 22071 transitions. Second operand 5 states. [2018-10-26 19:29:16,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:29:16,128 INFO L93 Difference]: Finished difference Result 45027 states and 45770 transitions. [2018-10-26 19:29:16,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:29:16,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 2695 [2018-10-26 19:29:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:29:16,156 INFO L225 Difference]: With dead ends: 45027 [2018-10-26 19:29:16,156 INFO L226 Difference]: Without dead ends: 23303 [2018-10-26 19:29:16,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2699 GetRequests, 2694 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:29:16,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23303 states. [2018-10-26 19:29:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23303 to 22054. [2018-10-26 19:29:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22054 states. [2018-10-26 19:29:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22054 states to 22054 states and 22381 transitions. [2018-10-26 19:29:16,395 INFO L78 Accepts]: Start accepts. Automaton has 22054 states and 22381 transitions. Word has length 2695 [2018-10-26 19:29:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:29:16,397 INFO L481 AbstractCegarLoop]: Abstraction has 22054 states and 22381 transitions. [2018-10-26 19:29:16,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:29:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 22054 states and 22381 transitions. [2018-10-26 19:29:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2708 [2018-10-26 19:29:16,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:29:16,447 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:29:16,447 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:29:16,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:29:16,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1848506455, now seen corresponding path program 1 times [2018-10-26 19:29:16,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:29:16,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:29:16,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:16,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:29:16,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:29:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13070 backedges. 10344 proven. 482 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2018-10-26 19:29:27,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:29:27,601 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:29:27,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:29:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:29:28,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:29:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13070 backedges. 9779 proven. 816 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2018-10-26 19:29:36,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:29:36,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2018-10-26 19:29:36,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 19:29:36,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 19:29:36,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:29:36,120 INFO L87 Difference]: Start difference. First operand 22054 states and 22381 transitions. Second operand 13 states. [2018-10-26 19:29:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:29:48,740 INFO L93 Difference]: Finished difference Result 46583 states and 47269 transitions. [2018-10-26 19:29:48,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-26 19:29:48,740 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2707 [2018-10-26 19:29:48,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:29:48,761 INFO L225 Difference]: With dead ends: 46583 [2018-10-26 19:29:48,762 INFO L226 Difference]: Without dead ends: 24861 [2018-10-26 19:29:48,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2731 GetRequests, 2710 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2018-10-26 19:29:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24861 states. [2018-10-26 19:29:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24861 to 22384. [2018-10-26 19:29:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22384 states. [2018-10-26 19:29:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22384 states to 22384 states and 22708 transitions. [2018-10-26 19:29:48,981 INFO L78 Accepts]: Start accepts. Automaton has 22384 states and 22708 transitions. Word has length 2707 [2018-10-26 19:29:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:29:48,983 INFO L481 AbstractCegarLoop]: Abstraction has 22384 states and 22708 transitions. [2018-10-26 19:29:48,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 19:29:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 22384 states and 22708 transitions. [2018-10-26 19:29:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2776 [2018-10-26 19:29:49,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:29:49,033 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:29:49,033 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:29:49,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:29:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1332012024, now seen corresponding path program 1 times [2018-10-26 19:29:49,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:29:49,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:29:49,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:49,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:29:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:29:50,903 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:29:51,052 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-26 19:30:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13903 backedges. 7433 proven. 2468 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2018-10-26 19:30:00,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:30:00,491 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:30:00,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:01,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:01,763 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 28 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown