java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 10:21:55,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 10:21:55,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 10:21:55,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 10:21:55,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 10:21:55,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 10:21:55,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 10:21:55,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 10:21:55,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 10:21:55,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 10:21:55,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 10:21:55,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 10:21:55,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 10:21:55,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 10:21:55,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 10:21:55,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 10:21:55,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 10:21:55,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 10:21:55,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 10:21:55,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 10:21:55,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 10:21:55,567 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 10:21:55,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 10:21:55,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 10:21:55,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 10:21:55,569 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 10:21:55,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 10:21:55,569 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 10:21:55,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 10:21:55,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 10:21:55,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 10:21:55,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 10:21:55,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 10:21:55,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 10:21:55,571 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 10:21:55,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 10:21:55,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 10:21:55,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 10:21:55,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 10:21:55,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 10:21:55,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 10:21:55,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 10:21:55,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 10:21:55,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 10:21:55,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 10:21:55,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 10:21:55,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 10:21:55,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 10:21:55,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 10:21:55,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 10:21:55,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 10:21:55,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 10:21:55,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 10:21:55,621 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 10:21:55,621 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 10:21:55,622 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-08 10:21:55,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c960f418e/520f261c1bbf479fb34010c7d7cf8c97/FLAGa07ad0ccc [2019-09-08 10:21:56,219 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 10:21:56,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-08 10:21:56,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c960f418e/520f261c1bbf479fb34010c7d7cf8c97/FLAGa07ad0ccc [2019-09-08 10:21:56,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c960f418e/520f261c1bbf479fb34010c7d7cf8c97 [2019-09-08 10:21:56,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 10:21:56,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 10:21:56,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 10:21:56,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 10:21:56,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 10:21:56,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 10:21:56" (1/1) ... [2019-09-08 10:21:56,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0f2ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:56, skipping insertion in model container [2019-09-08 10:21:56,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 10:21:56" (1/1) ... [2019-09-08 10:21:56,583 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 10:21:56,617 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 10:21:56,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 10:21:56,869 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 10:21:57,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 10:21:57,039 INFO L192 MainTranslator]: Completed translation [2019-09-08 10:21:57,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57 WrapperNode [2019-09-08 10:21:57,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 10:21:57,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 10:21:57,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 10:21:57,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 10:21:57,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... [2019-09-08 10:21:57,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 10:21:57,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 10:21:57,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 10:21:57,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 10:21:57,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 10:21:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 10:21:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 10:21:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 10:21:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 10:21:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 10:21:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 10:21:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 10:21:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 10:21:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 10:21:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 10:21:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 10:21:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 10:21:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 10:21:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 10:21:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 10:21:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 10:21:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 10:21:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 10:21:57,719 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 10:21:57,719 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 10:21:57,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 10:21:57 BoogieIcfgContainer [2019-09-08 10:21:57,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 10:21:57,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 10:21:57,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 10:21:57,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 10:21:57,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 10:21:56" (1/3) ... [2019-09-08 10:21:57,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53be49fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 10:21:57, skipping insertion in model container [2019-09-08 10:21:57,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:21:57" (2/3) ... [2019-09-08 10:21:57,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53be49fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 10:21:57, skipping insertion in model container [2019-09-08 10:21:57,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 10:21:57" (3/3) ... [2019-09-08 10:21:57,729 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-08 10:21:57,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 10:21:57,747 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 10:21:57,764 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 10:21:57,797 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 10:21:57,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 10:21:57,798 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 10:21:57,798 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 10:21:57,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 10:21:57,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 10:21:57,799 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 10:21:57,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 10:21:57,800 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 10:21:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-09-08 10:21:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-08 10:21:57,829 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:21:57,831 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:21:57,833 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:21:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:21:57,839 INFO L82 PathProgramCache]: Analyzing trace with hash 346351739, now seen corresponding path program 1 times [2019-09-08 10:21:57,841 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:21:57,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:21:57,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:57,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:21:57,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:21:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:21:58,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:21:58,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:21:58,243 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:21:58,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:21:58,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:21:58,262 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2019-09-08 10:21:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:21:58,371 INFO L93 Difference]: Finished difference Result 191 states and 301 transitions. [2019-09-08 10:21:58,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:21:58,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-08 10:21:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:21:58,394 INFO L225 Difference]: With dead ends: 191 [2019-09-08 10:21:58,394 INFO L226 Difference]: Without dead ends: 122 [2019-09-08 10:21:58,401 INFO L628 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 [2019-09-08 10:21:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-09-08 10:21:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2019-09-08 10:21:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-08 10:21:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2019-09-08 10:21:58,454 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 41 [2019-09-08 10:21:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:21:58,455 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2019-09-08 10:21:58,455 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:21:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2019-09-08 10:21:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 10:21:58,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:21:58,458 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:21:58,458 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:21:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:21:58,459 INFO L82 PathProgramCache]: Analyzing trace with hash -686518527, now seen corresponding path program 1 times [2019-09-08 10:21:58,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:21:58,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:21:58,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:58,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:21:58,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:21:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:21:58,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:21:58,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:21:58,572 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:21:58,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:21:58,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:21:58,573 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand 3 states. [2019-09-08 10:21:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:21:58,637 INFO L93 Difference]: Finished difference Result 280 states and 428 transitions. [2019-09-08 10:21:58,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:21:58,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-08 10:21:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:21:58,641 INFO L225 Difference]: With dead ends: 280 [2019-09-08 10:21:58,641 INFO L226 Difference]: Without dead ends: 184 [2019-09-08 10:21:58,643 INFO L628 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 [2019-09-08 10:21:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-09-08 10:21:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2019-09-08 10:21:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-09-08 10:21:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 273 transitions. [2019-09-08 10:21:58,675 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 273 transitions. Word has length 42 [2019-09-08 10:21:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:21:58,676 INFO L475 AbstractCegarLoop]: Abstraction has 182 states and 273 transitions. [2019-09-08 10:21:58,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:21:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 273 transitions. [2019-09-08 10:21:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 10:21:58,683 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:21:58,683 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:21:58,684 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:21:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:21:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash 844613284, now seen corresponding path program 1 times [2019-09-08 10:21:58,684 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:21:58,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:21:58,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:58,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:21:58,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:21:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:21:58,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:21:58,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:21:58,821 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:21:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:21:58,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:21:58,821 INFO L87 Difference]: Start difference. First operand 182 states and 273 transitions. Second operand 5 states. [2019-09-08 10:21:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:21:59,011 INFO L93 Difference]: Finished difference Result 814 states and 1269 transitions. [2019-09-08 10:21:59,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:21:59,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 10:21:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:21:59,019 INFO L225 Difference]: With dead ends: 814 [2019-09-08 10:21:59,019 INFO L226 Difference]: Without dead ends: 656 [2019-09-08 10:21:59,021 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:21:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-09-08 10:21:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 338. [2019-09-08 10:21:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2019-09-08 10:21:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 513 transitions. [2019-09-08 10:21:59,088 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 513 transitions. Word has length 43 [2019-09-08 10:21:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:21:59,088 INFO L475 AbstractCegarLoop]: Abstraction has 338 states and 513 transitions. [2019-09-08 10:21:59,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:21:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 513 transitions. [2019-09-08 10:21:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-08 10:21:59,090 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:21:59,091 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:21:59,091 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:21:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:21:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash 394675230, now seen corresponding path program 1 times [2019-09-08 10:21:59,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:21:59,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:21:59,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:59,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:21:59,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:21:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:21:59,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:21:59,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:21:59,195 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:21:59,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:21:59,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:21:59,196 INFO L87 Difference]: Start difference. First operand 338 states and 513 transitions. Second operand 5 states. [2019-09-08 10:21:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:21:59,313 INFO L93 Difference]: Finished difference Result 1168 states and 1796 transitions. [2019-09-08 10:21:59,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:21:59,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-09-08 10:21:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:21:59,321 INFO L225 Difference]: With dead ends: 1168 [2019-09-08 10:21:59,321 INFO L226 Difference]: Without dead ends: 854 [2019-09-08 10:21:59,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:21:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-09-08 10:21:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 850. [2019-09-08 10:21:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-09-08 10:21:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1297 transitions. [2019-09-08 10:21:59,408 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1297 transitions. Word has length 44 [2019-09-08 10:21:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:21:59,410 INFO L475 AbstractCegarLoop]: Abstraction has 850 states and 1297 transitions. [2019-09-08 10:21:59,410 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:21:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1297 transitions. [2019-09-08 10:21:59,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-08 10:21:59,421 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:21:59,421 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:21:59,422 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:21:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:21:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1517509475, now seen corresponding path program 1 times [2019-09-08 10:21:59,422 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:21:59,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:21:59,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:59,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:21:59,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:21:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:21:59,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:21:59,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:21:59,496 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:21:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:21:59,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:21:59,497 INFO L87 Difference]: Start difference. First operand 850 states and 1297 transitions. Second operand 3 states. [2019-09-08 10:21:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:21:59,619 INFO L93 Difference]: Finished difference Result 2238 states and 3411 transitions. [2019-09-08 10:21:59,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:21:59,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-09-08 10:21:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:21:59,631 INFO L225 Difference]: With dead ends: 2238 [2019-09-08 10:21:59,631 INFO L226 Difference]: Without dead ends: 1412 [2019-09-08 10:21:59,634 INFO L628 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 [2019-09-08 10:21:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-08 10:21:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1410. [2019-09-08 10:21:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1410 states. [2019-09-08 10:21:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2113 transitions. [2019-09-08 10:21:59,747 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2113 transitions. Word has length 44 [2019-09-08 10:21:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:21:59,748 INFO L475 AbstractCegarLoop]: Abstraction has 1410 states and 2113 transitions. [2019-09-08 10:21:59,748 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:21:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2113 transitions. [2019-09-08 10:21:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-08 10:21:59,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:21:59,751 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:21:59,751 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:21:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:21:59,752 INFO L82 PathProgramCache]: Analyzing trace with hash -108258923, now seen corresponding path program 1 times [2019-09-08 10:21:59,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:21:59,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:21:59,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:59,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:21:59,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:21:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:21:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:21:59,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:21:59,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 10:21:59,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 10:21:59,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 10:21:59,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:21:59,904 INFO L87 Difference]: Start difference. First operand 1410 states and 2113 transitions. Second operand 6 states. [2019-09-08 10:22:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:00,391 INFO L93 Difference]: Finished difference Result 5456 states and 8188 transitions. [2019-09-08 10:22:00,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:22:00,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-09-08 10:22:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:00,416 INFO L225 Difference]: With dead ends: 5456 [2019-09-08 10:22:00,417 INFO L226 Difference]: Without dead ends: 4070 [2019-09-08 10:22:00,420 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-09-08 10:22:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2019-09-08 10:22:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 4066. [2019-09-08 10:22:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4066 states. [2019-09-08 10:22:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 6065 transitions. [2019-09-08 10:22:00,707 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 6065 transitions. Word has length 46 [2019-09-08 10:22:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:00,709 INFO L475 AbstractCegarLoop]: Abstraction has 4066 states and 6065 transitions. [2019-09-08 10:22:00,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 10:22:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 6065 transitions. [2019-09-08 10:22:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-08 10:22:00,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:00,711 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:22:00,711 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1517905744, now seen corresponding path program 1 times [2019-09-08 10:22:00,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:00,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:00,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:00,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:00,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:00,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:00,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:22:00,847 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:22:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:22:00,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:22:00,847 INFO L87 Difference]: Start difference. First operand 4066 states and 6065 transitions. Second operand 5 states. [2019-09-08 10:22:01,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:01,400 INFO L93 Difference]: Finished difference Result 8396 states and 12394 transitions. [2019-09-08 10:22:01,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 10:22:01,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-08 10:22:01,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:01,458 INFO L225 Difference]: With dead ends: 8396 [2019-09-08 10:22:01,458 INFO L226 Difference]: Without dead ends: 8394 [2019-09-08 10:22:01,463 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:22:01,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2019-09-08 10:22:01,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 4354. [2019-09-08 10:22:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2019-09-08 10:22:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6353 transitions. [2019-09-08 10:22:02,004 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6353 transitions. Word has length 46 [2019-09-08 10:22:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:02,004 INFO L475 AbstractCegarLoop]: Abstraction has 4354 states and 6353 transitions. [2019-09-08 10:22:02,004 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:22:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6353 transitions. [2019-09-08 10:22:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 10:22:02,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:02,005 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:22:02,006 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:02,006 INFO L82 PathProgramCache]: Analyzing trace with hash -179942495, now seen corresponding path program 1 times [2019-09-08 10:22:02,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:02,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:02,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:02,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:02,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:02,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:02,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:22:02,062 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:22:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:22:02,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:22:02,063 INFO L87 Difference]: Start difference. First operand 4354 states and 6353 transitions. Second operand 3 states. [2019-09-08 10:22:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:02,493 INFO L93 Difference]: Finished difference Result 10406 states and 15171 transitions. [2019-09-08 10:22:02,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:22:02,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-08 10:22:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:02,530 INFO L225 Difference]: With dead ends: 10406 [2019-09-08 10:22:02,530 INFO L226 Difference]: Without dead ends: 6076 [2019-09-08 10:22:02,542 INFO L628 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 [2019-09-08 10:22:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2019-09-08 10:22:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 6074. [2019-09-08 10:22:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2019-09-08 10:22:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 8781 transitions. [2019-09-08 10:22:03,197 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 8781 transitions. Word has length 47 [2019-09-08 10:22:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:03,198 INFO L475 AbstractCegarLoop]: Abstraction has 6074 states and 8781 transitions. [2019-09-08 10:22:03,198 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:22:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 8781 transitions. [2019-09-08 10:22:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 10:22:03,201 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:03,202 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:03,202 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:03,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:03,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1778003244, now seen corresponding path program 1 times [2019-09-08 10:22:03,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:03,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:03,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:03,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:03,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 10:22:03,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:22:03,437 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:22:03,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:03,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-08 10:22:03,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:22:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 10:22:03,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:22:03,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2019-09-08 10:22:03,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 10:22:03,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 10:22:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:22:03,626 INFO L87 Difference]: Start difference. First operand 6074 states and 8781 transitions. Second operand 6 states. [2019-09-08 10:22:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:04,495 INFO L93 Difference]: Finished difference Result 15041 states and 21841 transitions. [2019-09-08 10:22:04,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:22:04,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-09-08 10:22:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:04,543 INFO L225 Difference]: With dead ends: 15041 [2019-09-08 10:22:04,544 INFO L226 Difference]: Without dead ends: 10711 [2019-09-08 10:22:04,559 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:22:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10711 states. [2019-09-08 10:22:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10711 to 10066. [2019-09-08 10:22:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10066 states. [2019-09-08 10:22:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 14437 transitions. [2019-09-08 10:22:05,459 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 14437 transitions. Word has length 64 [2019-09-08 10:22:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:05,460 INFO L475 AbstractCegarLoop]: Abstraction has 10066 states and 14437 transitions. [2019-09-08 10:22:05,460 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 10:22:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 14437 transitions. [2019-09-08 10:22:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 10:22:05,463 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:05,464 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:05,464 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:05,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:05,464 INFO L82 PathProgramCache]: Analyzing trace with hash 123591245, now seen corresponding path program 1 times [2019-09-08 10:22:05,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:05,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:05,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:05,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:05,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:05,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:22:05,569 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:22:05,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:05,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 10:22:05,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:22:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:05,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:22:05,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-09-08 10:22:05,772 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 10:22:05,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 10:22:05,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-08 10:22:05,773 INFO L87 Difference]: Start difference. First operand 10066 states and 14437 transitions. Second operand 11 states. [2019-09-08 10:22:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:08,041 INFO L93 Difference]: Finished difference Result 32555 states and 46635 transitions. [2019-09-08 10:22:08,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 10:22:08,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2019-09-08 10:22:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:08,109 INFO L225 Difference]: With dead ends: 32555 [2019-09-08 10:22:08,109 INFO L226 Difference]: Without dead ends: 25993 [2019-09-08 10:22:08,130 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-08 10:22:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25993 states. [2019-09-08 10:22:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25993 to 13996. [2019-09-08 10:22:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13996 states. [2019-09-08 10:22:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13996 states to 13996 states and 20053 transitions. [2019-09-08 10:22:09,411 INFO L78 Accepts]: Start accepts. Automaton has 13996 states and 20053 transitions. Word has length 65 [2019-09-08 10:22:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:09,411 INFO L475 AbstractCegarLoop]: Abstraction has 13996 states and 20053 transitions. [2019-09-08 10:22:09,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 10:22:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 13996 states and 20053 transitions. [2019-09-08 10:22:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 10:22:09,415 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:09,415 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:09,415 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:09,416 INFO L82 PathProgramCache]: Analyzing trace with hash -363244586, now seen corresponding path program 1 times [2019-09-08 10:22:09,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:09,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:09,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:09,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:09,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:09,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:09,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:22:09,480 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:22:09,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:22:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:22:09,480 INFO L87 Difference]: Start difference. First operand 13996 states and 20053 transitions. Second operand 3 states. [2019-09-08 10:22:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:10,382 INFO L93 Difference]: Finished difference Result 22234 states and 31699 transitions. [2019-09-08 10:22:10,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:22:10,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-08 10:22:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:10,418 INFO L225 Difference]: With dead ends: 22234 [2019-09-08 10:22:10,418 INFO L226 Difference]: Without dead ends: 14550 [2019-09-08 10:22:10,436 INFO L628 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 [2019-09-08 10:22:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14550 states. [2019-09-08 10:22:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14550 to 12333. [2019-09-08 10:22:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12333 states. [2019-09-08 10:22:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12333 states to 12333 states and 17321 transitions. [2019-09-08 10:22:11,122 INFO L78 Accepts]: Start accepts. Automaton has 12333 states and 17321 transitions. Word has length 65 [2019-09-08 10:22:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:11,122 INFO L475 AbstractCegarLoop]: Abstraction has 12333 states and 17321 transitions. [2019-09-08 10:22:11,122 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:22:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 12333 states and 17321 transitions. [2019-09-08 10:22:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 10:22:11,126 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:11,126 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:11,126 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -310142611, now seen corresponding path program 1 times [2019-09-08 10:22:11,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:11,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:11,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:11,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:11,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:11,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:11,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:22:11,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:22:11,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:22:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:22:11,173 INFO L87 Difference]: Start difference. First operand 12333 states and 17321 transitions. Second operand 3 states. [2019-09-08 10:22:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:12,490 INFO L93 Difference]: Finished difference Result 24935 states and 34987 transitions. [2019-09-08 10:22:12,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:22:12,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-08 10:22:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:12,528 INFO L225 Difference]: With dead ends: 24935 [2019-09-08 10:22:12,528 INFO L226 Difference]: Without dead ends: 15802 [2019-09-08 10:22:12,551 INFO L628 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 [2019-09-08 10:22:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15802 states. [2019-09-08 10:22:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15802 to 15751. [2019-09-08 10:22:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15751 states. [2019-09-08 10:22:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15751 states to 15751 states and 21885 transitions. [2019-09-08 10:22:13,705 INFO L78 Accepts]: Start accepts. Automaton has 15751 states and 21885 transitions. Word has length 65 [2019-09-08 10:22:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:13,705 INFO L475 AbstractCegarLoop]: Abstraction has 15751 states and 21885 transitions. [2019-09-08 10:22:13,705 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:22:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15751 states and 21885 transitions. [2019-09-08 10:22:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 10:22:13,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:13,710 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:13,710 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:13,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:13,710 INFO L82 PathProgramCache]: Analyzing trace with hash 367069983, now seen corresponding path program 1 times [2019-09-08 10:22:13,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:13,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:13,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:13,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:13,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 10:22:13,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:13,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 10:22:13,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 10:22:13,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 10:22:13,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:22:13,783 INFO L87 Difference]: Start difference. First operand 15751 states and 21885 transitions. Second operand 6 states. [2019-09-08 10:22:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:16,323 INFO L93 Difference]: Finished difference Result 54322 states and 75184 transitions. [2019-09-08 10:22:16,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:22:16,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2019-09-08 10:22:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:16,392 INFO L225 Difference]: With dead ends: 54322 [2019-09-08 10:22:16,392 INFO L226 Difference]: Without dead ends: 38635 [2019-09-08 10:22:16,432 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-09-08 10:22:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38635 states. [2019-09-08 10:22:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38635 to 38265. [2019-09-08 10:22:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38265 states. [2019-09-08 10:22:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38265 states to 38265 states and 52727 transitions. [2019-09-08 10:22:18,771 INFO L78 Accepts]: Start accepts. Automaton has 38265 states and 52727 transitions. Word has length 65 [2019-09-08 10:22:18,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:18,772 INFO L475 AbstractCegarLoop]: Abstraction has 38265 states and 52727 transitions. [2019-09-08 10:22:18,772 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 10:22:18,772 INFO L276 IsEmpty]: Start isEmpty. Operand 38265 states and 52727 transitions. [2019-09-08 10:22:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 10:22:18,777 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:18,777 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:18,777 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1984574874, now seen corresponding path program 1 times [2019-09-08 10:22:18,778 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:18,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:18,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:18,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:18,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:18,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:22:18,858 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 10:22:18,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:22:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:18,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 10:22:18,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:22:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:19,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:22:19,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-09-08 10:22:19,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 10:22:19,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 10:22:19,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-08 10:22:19,062 INFO L87 Difference]: Start difference. First operand 38265 states and 52727 transitions. Second operand 11 states. [2019-09-08 10:22:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:24,234 INFO L93 Difference]: Finished difference Result 89912 states and 123799 transitions. [2019-09-08 10:22:24,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 10:22:24,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2019-09-08 10:22:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:24,350 INFO L225 Difference]: With dead ends: 89912 [2019-09-08 10:22:24,351 INFO L226 Difference]: Without dead ends: 74630 [2019-09-08 10:22:24,391 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-08 10:22:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74630 states. [2019-09-08 10:22:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74630 to 44005. [2019-09-08 10:22:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44005 states. [2019-09-08 10:22:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44005 states to 44005 states and 60588 transitions. [2019-09-08 10:22:27,404 INFO L78 Accepts]: Start accepts. Automaton has 44005 states and 60588 transitions. Word has length 65 [2019-09-08 10:22:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:27,405 INFO L475 AbstractCegarLoop]: Abstraction has 44005 states and 60588 transitions. [2019-09-08 10:22:27,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 10:22:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 44005 states and 60588 transitions. [2019-09-08 10:22:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:22:27,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:27,411 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:27,411 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash 870613084, now seen corresponding path program 1 times [2019-09-08 10:22:27,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:27,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:27,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:27,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:27,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:27,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:27,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:22:27,697 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:22:27,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:22:27,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:22:27,698 INFO L87 Difference]: Start difference. First operand 44005 states and 60588 transitions. Second operand 3 states. [2019-09-08 10:22:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:29,761 INFO L93 Difference]: Finished difference Result 54487 states and 74247 transitions. [2019-09-08 10:22:29,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:22:29,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 10:22:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:29,811 INFO L225 Difference]: With dead ends: 54487 [2019-09-08 10:22:29,811 INFO L226 Difference]: Without dead ends: 37532 [2019-09-08 10:22:29,834 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:22:29,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37532 states. [2019-09-08 10:22:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37532 to 37513. [2019-09-08 10:22:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37513 states. [2019-09-08 10:22:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 50506 transitions. [2019-09-08 10:22:33,231 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 50506 transitions. Word has length 66 [2019-09-08 10:22:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:33,231 INFO L475 AbstractCegarLoop]: Abstraction has 37513 states and 50506 transitions. [2019-09-08 10:22:33,231 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:22:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 50506 transitions. [2019-09-08 10:22:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:22:33,235 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:33,235 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:33,236 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash 436879228, now seen corresponding path program 1 times [2019-09-08 10:22:33,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:33,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:33,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:33,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:33,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-08 10:22:33,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:33,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:22:33,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:22:33,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:22:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:22:33,299 INFO L87 Difference]: Start difference. First operand 37513 states and 50506 transitions. Second operand 5 states. [2019-09-08 10:22:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:36,459 INFO L93 Difference]: Finished difference Result 72872 states and 98209 transitions. [2019-09-08 10:22:36,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:22:36,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-08 10:22:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:36,530 INFO L225 Difference]: With dead ends: 72872 [2019-09-08 10:22:36,530 INFO L226 Difference]: Without dead ends: 45812 [2019-09-08 10:22:36,565 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:22:36,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45812 states. [2019-09-08 10:22:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45812 to 37513. [2019-09-08 10:22:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37513 states. [2019-09-08 10:22:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 49829 transitions. [2019-09-08 10:22:39,156 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 49829 transitions. Word has length 66 [2019-09-08 10:22:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:39,156 INFO L475 AbstractCegarLoop]: Abstraction has 37513 states and 49829 transitions. [2019-09-08 10:22:39,156 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:22:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 49829 transitions. [2019-09-08 10:22:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:22:39,161 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:39,162 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:39,162 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash -630666185, now seen corresponding path program 1 times [2019-09-08 10:22:39,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:39,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:39,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:39,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:39,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:39,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:22:39,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 10:22:39,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:22:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:39,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 10:22:39,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:22:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream closed [2019-09-08 10:22:39,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:22:39,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-09-08 10:22:39,433 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 10:22:39,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 10:22:39,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-08 10:22:39,435 INFO L87 Difference]: Start difference. First operand 37513 states and 49829 transitions. Second operand 11 states. [2019-09-08 10:22:43,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:43,998 INFO L93 Difference]: Finished difference Result 71657 states and 94803 transitions. [2019-09-08 10:22:43,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 10:22:43,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2019-09-08 10:22:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:44,066 INFO L225 Difference]: With dead ends: 71657 [2019-09-08 10:22:44,067 INFO L226 Difference]: Without dead ends: 50958 [2019-09-08 10:22:44,096 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-08 10:22:44,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50958 states. [2019-09-08 10:22:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50958 to 37846. [2019-09-08 10:22:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37846 states. [2019-09-08 10:22:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37846 states to 37846 states and 49865 transitions. [2019-09-08 10:22:46,892 INFO L78 Accepts]: Start accepts. Automaton has 37846 states and 49865 transitions. Word has length 66 [2019-09-08 10:22:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:46,893 INFO L475 AbstractCegarLoop]: Abstraction has 37846 states and 49865 transitions. [2019-09-08 10:22:46,893 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 10:22:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 37846 states and 49865 transitions. [2019-09-08 10:22:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:22:46,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:46,896 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:46,896 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:46,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2109117034, now seen corresponding path program 1 times [2019-09-08 10:22:46,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:46,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:46,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:46,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:46,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:22:46,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:46,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:22:46,957 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:22:46,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:22:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:22:46,958 INFO L87 Difference]: Start difference. First operand 37846 states and 49865 transitions. Second operand 3 states. [2019-09-08 10:22:50,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:50,043 INFO L93 Difference]: Finished difference Result 69107 states and 91171 transitions. [2019-09-08 10:22:50,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:22:50,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 10:22:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:50,091 INFO L225 Difference]: With dead ends: 69107 [2019-09-08 10:22:50,091 INFO L226 Difference]: Without dead ends: 41832 [2019-09-08 10:22:50,112 INFO L628 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 [2019-09-08 10:22:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41832 states. [2019-09-08 10:22:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41832 to 40393. [2019-09-08 10:22:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40393 states. [2019-09-08 10:22:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40393 states to 40393 states and 52273 transitions. [2019-09-08 10:22:54,408 INFO L78 Accepts]: Start accepts. Automaton has 40393 states and 52273 transitions. Word has length 66 [2019-09-08 10:22:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:22:54,409 INFO L475 AbstractCegarLoop]: Abstraction has 40393 states and 52273 transitions. [2019-09-08 10:22:54,409 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:22:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 40393 states and 52273 transitions. [2019-09-08 10:22:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 10:22:54,412 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:22:54,412 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:22:54,412 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:22:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:22:54,413 INFO L82 PathProgramCache]: Analyzing trace with hash 668558760, now seen corresponding path program 1 times [2019-09-08 10:22:54,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:22:54,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:22:54,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:54,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:22:54,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:22:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:22:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-08 10:22:54,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:22:54,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:22:54,499 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:22:54,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:22:54,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:22:54,500 INFO L87 Difference]: Start difference. First operand 40393 states and 52273 transitions. Second operand 5 states. [2019-09-08 10:22:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:22:58,599 INFO L93 Difference]: Finished difference Result 66524 states and 87041 transitions. [2019-09-08 10:22:58,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:22:58,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-09-08 10:22:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:22:58,670 INFO L225 Difference]: With dead ends: 66524 [2019-09-08 10:22:58,671 INFO L226 Difference]: Without dead ends: 54784 [2019-09-08 10:22:58,692 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:22:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54784 states. [2019-09-08 10:23:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54784 to 46814. [2019-09-08 10:23:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46814 states. [2019-09-08 10:23:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46814 states to 46814 states and 60392 transitions. [2019-09-08 10:23:02,248 INFO L78 Accepts]: Start accepts. Automaton has 46814 states and 60392 transitions. Word has length 67 [2019-09-08 10:23:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:23:02,248 INFO L475 AbstractCegarLoop]: Abstraction has 46814 states and 60392 transitions. [2019-09-08 10:23:02,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:23:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 46814 states and 60392 transitions. [2019-09-08 10:23:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 10:23:02,252 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:23:02,252 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:23:02,253 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:23:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:23:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1890118876, now seen corresponding path program 1 times [2019-09-08 10:23:02,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:23:02,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:23:02,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:23:02,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:23:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:23:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:23:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 10:23:02,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:23:02,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:23:02,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:23:02,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:23:02,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:23:02,317 INFO L87 Difference]: Start difference. First operand 46814 states and 60392 transitions. Second operand 5 states. [2019-09-08 10:23:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:23:07,945 INFO L93 Difference]: Finished difference Result 71976 states and 93942 transitions. [2019-09-08 10:23:07,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:23:07,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 10:23:07,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:23:08,017 INFO L225 Difference]: With dead ends: 71976 [2019-09-08 10:23:08,017 INFO L226 Difference]: Without dead ends: 61234 [2019-09-08 10:23:08,036 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:23:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61234 states. [2019-09-08 10:23:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61234 to 56027. [2019-09-08 10:23:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56027 states. [2019-09-08 10:23:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56027 states to 56027 states and 72257 transitions. [2019-09-08 10:23:12,234 INFO L78 Accepts]: Start accepts. Automaton has 56027 states and 72257 transitions. Word has length 68 [2019-09-08 10:23:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:23:12,234 INFO L475 AbstractCegarLoop]: Abstraction has 56027 states and 72257 transitions. [2019-09-08 10:23:12,234 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:23:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 56027 states and 72257 transitions. [2019-09-08 10:23:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 10:23:12,239 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:23:12,239 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:23:12,239 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:23:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:23:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1936151433, now seen corresponding path program 1 times [2019-09-08 10:23:12,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:23:12,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:23:12,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:23:12,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:23:12,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:23:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:23:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 10:23:12,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:23:12,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:23:12,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:23:12,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:23:12,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:23:12,306 INFO L87 Difference]: Start difference. First operand 56027 states and 72257 transitions. Second operand 5 states. [2019-09-08 10:23:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:23:17,714 INFO L93 Difference]: Finished difference Result 78907 states and 102817 transitions. [2019-09-08 10:23:17,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:23:17,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 10:23:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:23:17,795 INFO L225 Difference]: With dead ends: 78907 [2019-09-08 10:23:17,796 INFO L226 Difference]: Without dead ends: 68767 [2019-09-08 10:23:17,819 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:23:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68767 states. [2019-09-08 10:23:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68767 to 63545. [2019-09-08 10:23:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63545 states. [2019-09-08 10:23:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63545 states to 63545 states and 81821 transitions. [2019-09-08 10:23:24,680 INFO L78 Accepts]: Start accepts. Automaton has 63545 states and 81821 transitions. Word has length 68 [2019-09-08 10:23:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:23:24,680 INFO L475 AbstractCegarLoop]: Abstraction has 63545 states and 81821 transitions. [2019-09-08 10:23:24,680 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:23:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 63545 states and 81821 transitions. [2019-09-08 10:23:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-08 10:23:24,686 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:23:24,686 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:23:24,686 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:23:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:23:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1860539110, now seen corresponding path program 1 times [2019-09-08 10:23:24,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:23:24,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:23:24,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:23:24,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:23:24,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:23:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:23:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:23:24,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:23:24,886 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 10:23:24,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:23:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:23:24,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 50 conjunts are in the unsatisfiable core [2019-09-08 10:23:24,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:23:25,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:23:25,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:23:25,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:23:26,145 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-08 10:23:26,411 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-08 10:23:26,869 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-08 10:23:26,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:23:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 10:23:27,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:23:27,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24] total 31 [2019-09-08 10:23:27,533 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 10:23:27,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 10:23:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2019-09-08 10:23:27,534 INFO L87 Difference]: Start difference. First operand 63545 states and 81821 transitions. Second operand 31 states. [2019-09-08 10:23:31,003 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 10:23:31,422 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 10:23:31,853 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-08 10:23:34,887 WARN L188 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-08 10:23:35,573 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2019-09-08 10:23:36,127 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-08 10:23:38,681 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 10:23:39,399 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-08 10:23:39,857 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 10:23:40,918 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-08 10:23:41,369 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-08 10:23:41,751 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:23:42,935 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 10:23:43,384 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-08 10:23:46,884 WARN L188 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 10:23:47,178 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-08 10:23:47,485 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:23:47,658 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-08 10:23:48,806 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-08 10:23:49,152 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 10:23:49,715 WARN L188 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-08 10:23:50,122 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-08 10:23:50,674 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-08 10:23:51,049 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-08 10:23:51,420 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 10:23:52,423 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 10:23:52,768 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 10:23:53,095 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 10:23:53,328 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-08 10:23:53,664 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-08 10:23:54,034 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:23:54,334 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-08 10:23:55,297 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 10:23:55,738 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-08 10:23:56,449 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 10:23:56,722 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 10:23:56,900 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 10:23:58,411 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 10:23:58,833 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 10:23:59,342 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-08 10:23:59,849 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 10:24:00,129 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-08 10:24:00,465 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-08 10:24:01,879 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-08 10:24:02,288 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 10:24:02,928 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-08 10:24:03,348 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-08 10:24:05,197 WARN L188 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-08 10:24:09,548 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-09-08 10:24:11,454 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-09-08 10:24:12,302 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-08 10:24:15,353 WARN L188 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-08 10:24:15,900 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 10:24:16,186 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 10:24:17,378 WARN L188 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-08 10:24:17,854 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 10:24:18,415 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-08 10:24:19,362 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-08 10:24:24,026 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-08 10:24:25,159 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 10:24:27,280 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-08 10:24:29,296 WARN L188 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:24:30,368 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-08 10:24:31,382 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 10:24:32,627 WARN L188 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-08 10:24:32,953 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 10:24:33,203 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 10:24:34,940 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-08 10:24:35,675 WARN L188 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-08 10:24:36,094 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-08 10:24:36,611 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 10:24:37,031 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 10:24:37,823 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 10:24:38,189 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-08 10:24:38,440 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 10:24:39,467 WARN L188 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:24:39,806 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:24:39,977 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-08 10:24:40,607 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-09-08 10:25:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:25:47,667 INFO L93 Difference]: Finished difference Result 699663 states and 891175 transitions. [2019-09-08 10:25:47,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-09-08 10:25:47,669 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 73 [2019-09-08 10:25:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:25:48,606 INFO L225 Difference]: With dead ends: 699663 [2019-09-08 10:25:48,606 INFO L226 Difference]: Without dead ends: 635960 [2019-09-08 10:25:48,765 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36422 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=13112, Invalid=66693, Unknown=1, NotChecked=0, Total=79806 [2019-09-08 10:25:49,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635960 states. [2019-09-08 10:26:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635960 to 134544. [2019-09-08 10:26:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134544 states. [2019-09-08 10:26:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134544 states to 134544 states and 173720 transitions. [2019-09-08 10:26:14,176 INFO L78 Accepts]: Start accepts. Automaton has 134544 states and 173720 transitions. Word has length 73 [2019-09-08 10:26:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:26:14,176 INFO L475 AbstractCegarLoop]: Abstraction has 134544 states and 173720 transitions. [2019-09-08 10:26:14,176 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 10:26:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 134544 states and 173720 transitions. [2019-09-08 10:26:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-08 10:26:14,184 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:26:14,184 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:26:14,185 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:26:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:26:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash -963634868, now seen corresponding path program 1 times [2019-09-08 10:26:14,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:26:14,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:26:14,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:26:14,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:26:14,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:26:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:26:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 10:26:14,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:26:14,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:26:14,227 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:26:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:26:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:26:14,227 INFO L87 Difference]: Start difference. First operand 134544 states and 173720 transitions. Second operand 3 states. [2019-09-08 10:26:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:26:29,146 INFO L93 Difference]: Finished difference Result 253283 states and 327231 transitions. [2019-09-08 10:26:29,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:26:29,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-09-08 10:26:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:26:29,298 INFO L225 Difference]: With dead ends: 253283 [2019-09-08 10:26:29,298 INFO L226 Difference]: Without dead ends: 120159 [2019-09-08 10:26:29,384 INFO L628 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 [2019-09-08 10:26:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120159 states. [2019-09-08 10:26:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120159 to 118977. [2019-09-08 10:26:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118977 states. [2019-09-08 10:26:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118977 states to 118977 states and 152224 transitions. [2019-09-08 10:26:48,035 INFO L78 Accepts]: Start accepts. Automaton has 118977 states and 152224 transitions. Word has length 74 [2019-09-08 10:26:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:26:48,035 INFO L475 AbstractCegarLoop]: Abstraction has 118977 states and 152224 transitions. [2019-09-08 10:26:48,035 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:26:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 118977 states and 152224 transitions. [2019-09-08 10:26:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-08 10:26:48,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:26:48,042 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:26:48,042 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:26:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:26:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2027727893, now seen corresponding path program 1 times [2019-09-08 10:26:48,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:26:48,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:26:48,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:26:48,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:26:48,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:26:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:26:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:26:48,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:26:48,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:26:48,082 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:26:48,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:26:48,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:26:48,083 INFO L87 Difference]: Start difference. First operand 118977 states and 152224 transitions. Second operand 3 states. [2019-09-08 10:27:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:27:00,714 INFO L93 Difference]: Finished difference Result 151130 states and 192988 transitions. [2019-09-08 10:27:00,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:27:00,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-09-08 10:27:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:27:00,843 INFO L225 Difference]: With dead ends: 151130 [2019-09-08 10:27:00,843 INFO L226 Difference]: Without dead ends: 107482 [2019-09-08 10:27:00,883 INFO L628 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 [2019-09-08 10:27:00,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107482 states. [2019-09-08 10:27:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107482 to 95193. [2019-09-08 10:27:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95193 states. [2019-09-08 10:27:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95193 states to 95193 states and 120170 transitions. [2019-09-08 10:27:16,843 INFO L78 Accepts]: Start accepts. Automaton has 95193 states and 120170 transitions. Word has length 74 [2019-09-08 10:27:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:27:16,843 INFO L475 AbstractCegarLoop]: Abstraction has 95193 states and 120170 transitions. [2019-09-08 10:27:16,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:27:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 95193 states and 120170 transitions. [2019-09-08 10:27:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-08 10:27:16,848 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:27:16,849 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:27:16,849 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:27:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:27:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1298301514, now seen corresponding path program 1 times [2019-09-08 10:27:16,849 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:27:16,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:27:16,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:27:16,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:27:16,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:27:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:27:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-08 10:27:16,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:27:16,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:27:16,887 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:27:16,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:27:16,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:27:16,887 INFO L87 Difference]: Start difference. First operand 95193 states and 120170 transitions. Second operand 3 states. [2019-09-08 10:27:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:27:26,989 INFO L93 Difference]: Finished difference Result 169054 states and 214144 transitions. [2019-09-08 10:27:26,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:27:26,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-09-08 10:27:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:27:27,131 INFO L225 Difference]: With dead ends: 169054 [2019-09-08 10:27:27,131 INFO L226 Difference]: Without dead ends: 87906 [2019-09-08 10:27:27,225 INFO L628 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 [2019-09-08 10:27:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87906 states. [2019-09-08 10:27:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87906 to 87906. [2019-09-08 10:27:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87906 states. [2019-09-08 10:27:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87906 states to 87906 states and 109734 transitions. [2019-09-08 10:27:38,363 INFO L78 Accepts]: Start accepts. Automaton has 87906 states and 109734 transitions. Word has length 74 [2019-09-08 10:27:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:27:38,363 INFO L475 AbstractCegarLoop]: Abstraction has 87906 states and 109734 transitions. [2019-09-08 10:27:38,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:27:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 87906 states and 109734 transitions. [2019-09-08 10:27:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-08 10:27:38,369 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:27:38,369 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 10:27:38,369 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:27:38,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:27:38,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2138214961, now seen corresponding path program 1 times [2019-09-08 10:27:38,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:27:38,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:27:38,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:27:38,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:27:38,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:27:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:27:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:27:39,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:27:39,199 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:27:39,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:27:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:27:39,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 10:27:39,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:27:39,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:27:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 10:27:39,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:27:39,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2019-09-08 10:27:39,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 10:27:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 10:27:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-09-08 10:27:39,850 INFO L87 Difference]: Start difference. First operand 87906 states and 109734 transitions. Second operand 28 states. [2019-09-08 10:27:43,911 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-09-08 10:27:46,190 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-08 10:27:46,872 WARN L188 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:27:47,097 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-08 10:27:47,339 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-08 10:27:48,469 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-08 10:27:48,958 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-09-08 10:27:49,573 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:27:49,805 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-08 10:27:50,071 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:27:50,278 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:27:50,432 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 10:27:50,715 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2019-09-08 10:27:51,031 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2019-09-08 10:27:51,381 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:27:51,680 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-08 10:27:51,904 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-08 10:27:52,096 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-08 10:27:52,351 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-08 10:27:52,538 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 10:27:52,800 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:27:52,954 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 10:27:53,297 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-08 10:27:53,668 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 10:27:53,950 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-08 10:27:54,223 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:27:54,840 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-08 10:27:55,032 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-08 10:27:56,641 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-08 10:27:56,800 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2019-09-08 10:27:56,966 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:27:57,134 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:27:57,468 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 10:27:57,704 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:27:57,879 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-08 10:27:58,038 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 10:27:58,243 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:27:58,564 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:27:58,859 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:27:59,041 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2019-09-08 10:27:59,293 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 10:27:59,455 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 10:27:59,717 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-08 10:27:59,932 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-08 10:28:00,168 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-08 10:28:00,403 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-08 10:28:00,585 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-09-08 10:28:00,835 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-08 10:28:01,050 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-08 10:28:01,319 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-08 10:28:01,751 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-08 10:28:01,951 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:28:02,371 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 10:28:02,608 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:28:02,811 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-08 10:28:03,108 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 10:28:03,337 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-08 10:28:04,168 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-08 10:28:04,412 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-08 10:28:04,637 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-08 10:28:04,861 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:28:05,080 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:28:05,331 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-08 10:28:05,831 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-08 10:28:06,007 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 10:28:06,652 WARN L188 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-08 10:28:06,854 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:28:07,111 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-08 10:28:07,272 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-08 10:28:07,705 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-08 10:28:07,860 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-08 10:28:08,040 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-08 10:28:08,309 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-08 10:28:08,575 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-08 10:28:08,775 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-08 10:28:09,108 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:28:09,378 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-08 10:28:09,613 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-08 10:28:09,945 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:28:10,172 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-08 10:28:10,338 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 10:28:10,532 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-08 10:28:10,905 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-08 10:28:11,280 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-08 10:28:11,825 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-08 10:28:12,008 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-08 10:28:12,389 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-08 10:28:12,559 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-08 10:28:13,132 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:28:13,465 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:28:13,756 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 10:28:14,042 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 10:28:14,349 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-08 10:28:14,567 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2019-09-08 10:28:14,849 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-08 10:28:15,050 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:28:15,329 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-08 10:28:15,831 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 10:28:16,089 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-08 10:28:16,287 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:28:16,549 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-08 10:28:16,966 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-08 10:28:17,286 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:28:17,498 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-08 10:28:17,712 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2019-09-08 10:28:18,050 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-08 10:28:18,334 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-08 10:28:18,731 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-08 10:28:18,956 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-08 10:28:19,103 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 10:28:19,355 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-08 10:28:19,883 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-08 10:28:20,083 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:28:20,243 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-08 10:28:20,481 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 10:28:20,728 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-08 10:28:20,923 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-08 10:28:21,538 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-08 10:28:21,772 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-09-08 10:28:21,929 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-08 10:28:22,192 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-08 10:28:22,400 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-08 10:28:22,671 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-08 10:28:22,897 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-08 10:28:23,077 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-08 10:28:23,263 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-08 10:28:23,549 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2019-09-08 10:28:23,838 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-08 10:28:24,027 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 10:28:24,234 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-08 10:28:24,536 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:28:24,831 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:28:25,066 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:28:25,362 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 10:28:25,598 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-08 10:28:26,009 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-09-08 10:28:26,217 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 10:28:26,549 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-08 10:28:26,712 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-08 10:28:26,990 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-08 10:28:27,216 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 10:28:27,495 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-09-08 10:28:27,711 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:28:28,012 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-08 10:28:28,270 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-08 10:28:28,529 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2019-09-08 10:28:28,844 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-08 10:28:29,168 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2019-09-08 10:28:29,454 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-08 10:28:29,686 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-08 10:28:29,939 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2019-09-08 10:28:30,336 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-08 10:28:31,048 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-08 10:28:31,345 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2019-09-08 10:28:31,574 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2019-09-08 10:28:31,767 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 10:28:31,981 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-08 10:28:32,373 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-09-08 10:28:32,681 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-08 10:28:32,950 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-08 10:28:33,417 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-08 10:28:33,783 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-08 10:28:34,320 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2019-09-08 10:28:34,578 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2019-09-08 10:28:34,900 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-08 10:28:35,089 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 10:28:35,491 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2019-09-08 10:28:36,004 WARN L188 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-08 10:28:36,226 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-08 10:28:36,497 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-08 10:28:36,801 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-08 10:28:36,991 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 10:28:37,347 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2019-09-08 10:28:37,585 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-08 10:28:37,966 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 10:28:38,409 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-09-08 10:28:38,594 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 10:28:39,054 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-08 10:28:39,402 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 10:28:39,823 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2019-09-08 10:28:40,161 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-08 10:28:40,526 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-08 10:28:40,791 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-08 10:28:41,027 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:28:41,205 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-08 10:28:41,860 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-09-08 10:28:42,176 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-08 10:28:42,388 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 10:28:42,568 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-08 10:28:43,043 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-09-08 10:28:45,880 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 10:28:46,452 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-08 10:28:48,245 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-08 10:28:49,584 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-08 10:28:49,875 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-08 10:28:50,877 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:28:51,073 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 10:28:51,216 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 10:28:51,489 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 10:28:52,337 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-09-08 10:28:53,051 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-09-08 10:28:53,492 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-08 10:28:53,880 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 10:28:54,561 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-08 10:28:54,825 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-08 10:28:55,748 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-08 10:28:55,983 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:28:56,241 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:28:56,442 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 10:28:56,861 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-08 10:28:57,141 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:28:57,316 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 10:28:57,486 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 10:28:57,759 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 10:28:58,177 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-08 10:28:58,326 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-08 10:28:58,535 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-08 10:28:58,730 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 10:28:59,218 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 10:28:59,782 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-08 10:29:00,069 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 10:29:00,480 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 10:29:00,750 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-08 10:29:01,058 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 10:29:01,336 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 10:29:01,588 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 10:29:01,944 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-08 10:29:02,153 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-08 10:29:08,702 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-08 10:29:08,952 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-08 10:29:09,154 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-08 10:29:09,437 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-08 10:29:09,944 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 10:29:10,112 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 10:29:10,358 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:29:10,615 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-08 10:29:10,917 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 10:29:11,475 WARN L188 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:29:11,694 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-08 10:29:12,475 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-08 10:29:12,661 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-08 10:29:12,874 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-08 10:29:13,255 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-08 10:29:13,401 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-08 10:29:13,598 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-08 10:29:14,117 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-08 10:29:14,329 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-08 10:29:14,618 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2019-09-08 10:29:14,845 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-08 10:29:15,062 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 10:29:15,382 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-08 10:29:15,712 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 10:29:15,954 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-08 10:29:16,443 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-08 10:29:16,916 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-08 10:29:17,095 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 10:29:17,268 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-08 10:29:17,650 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-08 10:29:17,890 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-08 10:29:18,110 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-08 10:29:18,272 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-08 10:29:18,946 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2019-09-08 10:29:19,240 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-08 10:29:19,587 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-08 10:29:19,809 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-08 10:29:20,093 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-08 10:29:20,246 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 10:29:20,477 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-08 10:29:20,798 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-08 10:29:21,068 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-08 10:29:21,241 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:29:21,506 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:29:22,134 WARN L188 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:29:22,362 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-08 10:29:22,626 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-08 10:29:23,150 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-08 10:29:23,405 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 10:29:23,606 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 10:29:23,886 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-08 10:29:24,205 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2019-09-08 10:29:24,629 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2019-09-08 10:29:24,986 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-08 10:29:25,242 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-08 10:29:25,682 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-08 10:29:25,875 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 10:29:26,318 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-08 10:29:26,533 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 10:29:26,804 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-08 10:29:27,089 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-08 10:29:27,388 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-08 10:29:27,689 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 10:29:28,039 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-08 10:29:28,537 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2019-09-08 10:29:28,914 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 10:29:29,464 WARN L188 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 10:29:29,730 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 10:29:29,950 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2019-09-08 10:29:30,170 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-08 10:29:30,394 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 10:29:30,608 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 10:29:30,873 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 10:29:31,158 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:29:32,085 WARN L188 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2019-09-08 10:29:32,334 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-08 10:29:32,609 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-08 10:29:32,867 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2019-09-08 10:29:33,112 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-08 10:29:33,485 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2019-09-08 10:29:34,333 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 10:29:34,593 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-08 10:29:34,787 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-08 10:29:34,992 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-08 10:29:35,644 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2019-09-08 10:29:35,975 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 10:29:36,244 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 10:29:36,483 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-09-08 10:29:36,902 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-09-08 10:29:37,309 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2019-09-08 10:29:37,878 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2019-09-08 10:29:38,227 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-08 10:29:38,563 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2019-09-08 10:29:39,166 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 10:29:39,546 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-08 10:29:41,864 WARN L188 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-08 10:29:42,170 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 10:29:44,177 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2019-09-08 10:29:44,737 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-08 10:29:46,095 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 10:29:46,717 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-08 10:29:46,999 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-08 10:29:48,253 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2019-09-08 10:29:48,464 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-08 10:29:49,317 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-08 10:29:50,329 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-08 10:29:51,093 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-08 10:29:52,504 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 10:29:54,478 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 10:29:57,442 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:30:00,858 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-08 10:30:03,471 WARN L188 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 10:30:05,201 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:30:05,497 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-08 10:30:06,056 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 10:30:08,800 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:30:11,573 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-08 10:30:18,992 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-08 10:30:20,608 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-08 10:30:29,658 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 10:30:34,930 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 10:30:38,671 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-08 10:30:40,065 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 10:30:42,256 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 10:30:43,878 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 10:30:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:30:48,939 INFO L93 Difference]: Finished difference Result 407439 states and 504170 transitions. [2019-09-08 10:30:48,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 540 states. [2019-09-08 10:30:48,939 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2019-09-08 10:30:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:30:49,445 INFO L225 Difference]: With dead ends: 407439 [2019-09-08 10:30:49,445 INFO L226 Difference]: Without dead ends: 374239 [2019-09-08 10:30:49,566 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147862 ImplicationChecksByTransitivity, 111.5s TimeCoverageRelationStatistics Valid=31078, Invalid=281951, Unknown=11, NotChecked=0, Total=313040 [2019-09-08 10:30:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374239 states. [2019-09-08 10:31:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374239 to 115605. [2019-09-08 10:31:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115605 states. [2019-09-08 10:31:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115605 states to 115605 states and 144035 transitions. [2019-09-08 10:31:10,104 INFO L78 Accepts]: Start accepts. Automaton has 115605 states and 144035 transitions. Word has length 75 [2019-09-08 10:31:10,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:31:10,104 INFO L475 AbstractCegarLoop]: Abstraction has 115605 states and 144035 transitions. [2019-09-08 10:31:10,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 10:31:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 115605 states and 144035 transitions. [2019-09-08 10:31:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 10:31:10,125 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:31:10,125 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:31:10,125 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:31:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:31:10,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2006698838, now seen corresponding path program 1 times [2019-09-08 10:31:10,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:31:10,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:31:10,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:31:10,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:31:10,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:31:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:31:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 10:31:10,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:31:10,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:31:10,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:31:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:31:10,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-08 10:31:10,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:31:10,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:31:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-08 10:31:10,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:31:10,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 10:31:10,546 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 10:31:10,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 10:31:10,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 10:31:10,547 INFO L87 Difference]: Start difference. First operand 115605 states and 144035 transitions. Second operand 13 states. [2019-09-08 10:32:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:32:09,728 INFO L93 Difference]: Finished difference Result 391785 states and 489337 transitions. [2019-09-08 10:32:09,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-08 10:32:09,728 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2019-09-08 10:32:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:32:10,142 INFO L225 Difference]: With dead ends: 391785 [2019-09-08 10:32:10,142 INFO L226 Difference]: Without dead ends: 324748 [2019-09-08 10:32:10,219 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1011, Invalid=3681, Unknown=0, NotChecked=0, Total=4692 [2019-09-08 10:32:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324748 states. [2019-09-08 10:32:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324748 to 181357. [2019-09-08 10:32:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181357 states. [2019-09-08 10:32:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181357 states to 181357 states and 224727 transitions. [2019-09-08 10:32:45,816 INFO L78 Accepts]: Start accepts. Automaton has 181357 states and 224727 transitions. Word has length 102 [2019-09-08 10:32:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:32:45,816 INFO L475 AbstractCegarLoop]: Abstraction has 181357 states and 224727 transitions. [2019-09-08 10:32:45,816 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 10:32:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 181357 states and 224727 transitions. [2019-09-08 10:32:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 10:32:45,853 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:32:45,853 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:32:45,854 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:32:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:32:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1788119267, now seen corresponding path program 1 times [2019-09-08 10:32:45,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:32:45,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:32:45,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:32:45,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:32:45,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:32:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:32:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 10:32:45,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:32:45,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 10:32:45,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 10:32:45,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 10:32:45,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 10:32:45,911 INFO L87 Difference]: Start difference. First operand 181357 states and 224727 transitions. Second operand 4 states. [2019-09-08 10:33:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:33:16,432 INFO L93 Difference]: Finished difference Result 305178 states and 376915 transitions. [2019-09-08 10:33:16,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:33:16,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-09-08 10:33:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:33:16,653 INFO L225 Difference]: With dead ends: 305178 [2019-09-08 10:33:16,653 INFO L226 Difference]: Without dead ends: 175941 [2019-09-08 10:33:16,748 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:33:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175941 states. [2019-09-08 10:33:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175941 to 110409. [2019-09-08 10:33:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110409 states. [2019-09-08 10:33:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110409 states to 110409 states and 135787 transitions. [2019-09-08 10:33:42,878 INFO L78 Accepts]: Start accepts. Automaton has 110409 states and 135787 transitions. Word has length 117 [2019-09-08 10:33:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:33:42,878 INFO L475 AbstractCegarLoop]: Abstraction has 110409 states and 135787 transitions. [2019-09-08 10:33:42,878 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 10:33:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 110409 states and 135787 transitions. [2019-09-08 10:33:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 10:33:42,904 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:33:42,904 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:33:42,905 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:33:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:33:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash -656203746, now seen corresponding path program 1 times [2019-09-08 10:33:42,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:33:42,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:33:42,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:33:42,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:33:42,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:33:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:33:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 10:33:42,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:33:42,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:33:42,951 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:33:42,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:33:42,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:33:42,951 INFO L87 Difference]: Start difference. First operand 110409 states and 135787 transitions. Second operand 3 states. [2019-09-08 10:34:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:34:03,533 INFO L93 Difference]: Finished difference Result 217001 states and 266940 transitions. [2019-09-08 10:34:03,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:34:03,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-09-08 10:34:03,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:34:03,673 INFO L225 Difference]: With dead ends: 217001 [2019-09-08 10:34:03,673 INFO L226 Difference]: Without dead ends: 106649 [2019-09-08 10:34:03,753 INFO L628 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 [2019-09-08 10:34:03,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106649 states. [2019-09-08 10:34:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106649 to 106405. [2019-09-08 10:34:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106405 states. [2019-09-08 10:34:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106405 states to 106405 states and 129890 transitions. [2019-09-08 10:34:28,071 INFO L78 Accepts]: Start accepts. Automaton has 106405 states and 129890 transitions. Word has length 117 [2019-09-08 10:34:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:34:28,072 INFO L475 AbstractCegarLoop]: Abstraction has 106405 states and 129890 transitions. [2019-09-08 10:34:28,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:34:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 106405 states and 129890 transitions. [2019-09-08 10:34:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 10:34:28,098 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:34:28,099 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:34:28,099 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:34:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:34:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1497760794, now seen corresponding path program 1 times [2019-09-08 10:34:28,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:34:28,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:34:28,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:34:28,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:34:28,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:34:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:34:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-08 10:34:28,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:34:28,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:34:28,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:34:28,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:34:28,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:34:28,149 INFO L87 Difference]: Start difference. First operand 106405 states and 129890 transitions. Second operand 3 states.