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.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 11:36:55,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 11:36:55,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 11:36:55,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 11:36:55,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 11:36:55,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 11:36:55,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 11:36:55,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 11:36:55,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 11:36:55,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 11:36:55,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 11:36:55,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 11:36:55,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 11:36:55,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 11:36:55,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 11:36:55,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 11:36:55,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 11:36:55,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 11:36:55,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 11:36:55,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 11:36:55,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 11:36:55,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 11:36:55,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 11:36:55,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 11:36:55,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 11:36:55,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 11:36:55,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 11:36:55,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 11:36:55,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 11:36:55,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 11:36:55,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 11:36:55,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 11:36:55,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 11:36:55,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 11:36:55,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 11:36:55,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 11:36:55,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 11:36:55,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 11:36:55,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 11:36:55,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 11:36:55,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 11:36:55,715 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 11:36:55,729 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 11:36:55,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 11:36:55,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 11:36:55,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 11:36:55,731 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 11:36:55,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 11:36:55,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 11:36:55,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 11:36:55,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 11:36:55,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 11:36:55,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 11:36:55,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 11:36:55,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 11:36:55,733 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 11:36:55,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 11:36:55,733 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 11:36:55,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 11:36:55,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 11:36:55,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 11:36:55,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 11:36:55,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 11:36:55,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 11:36:55,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 11:36:55,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 11:36:55,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 11:36:55,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 11:36:55,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 11:36:55,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 11:36:55,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 11:36:55,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 11:36:55,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 11:36:55,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 11:36:55,780 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 11:36:55,781 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 11:36:55,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:36:55,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf702a4ec/3565049a56ec47198406d5b45c6dc6a4/FLAGaa61ab631 [2019-09-08 11:36:56,355 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 11:36:56,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:36:56,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf702a4ec/3565049a56ec47198406d5b45c6dc6a4/FLAGaa61ab631 [2019-09-08 11:36:56,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf702a4ec/3565049a56ec47198406d5b45c6dc6a4 [2019-09-08 11:36:56,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 11:36:56,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 11:36:56,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 11:36:56,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 11:36:56,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 11:36:56,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:36:56" (1/1) ... [2019-09-08 11:36:56,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9b4048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:56, skipping insertion in model container [2019-09-08 11:36:56,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:36:56" (1/1) ... [2019-09-08 11:36:56,738 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 11:36:56,784 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 11:36:57,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:36:57,021 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 11:36:57,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:36:57,201 INFO L192 MainTranslator]: Completed translation [2019-09-08 11:36:57,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57 WrapperNode [2019-09-08 11:36:57,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 11:36:57,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 11:36:57,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 11:36:57,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 11:36:57,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (1/1) ... [2019-09-08 11:36:57,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 11:36:57,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 11:36:57,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 11:36:57,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 11:36:57,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (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 11:36:57,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 11:36:57,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 11:36:57,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 11:36:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 11:36:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 11:36:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 11:36:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 11:36:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 11:36:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 11:36:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 11:36:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 11:36:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 11:36:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 11:36:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 11:36:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 11:36:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 11:36:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 11:36:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 11:36:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 11:36:57,809 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 11:36:57,809 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 11:36:57,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:36:57 BoogieIcfgContainer [2019-09-08 11:36:57,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 11:36:57,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 11:36:57,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 11:36:57,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 11:36:57,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 11:36:56" (1/3) ... [2019-09-08 11:36:57,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b93a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:36:57, skipping insertion in model container [2019-09-08 11:36:57,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:36:57" (2/3) ... [2019-09-08 11:36:57,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b93a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:36:57, skipping insertion in model container [2019-09-08 11:36:57,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:36:57" (3/3) ... [2019-09-08 11:36:57,819 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:36:57,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 11:36:57,838 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 11:36:57,855 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 11:36:57,889 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 11:36:57,890 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 11:36:57,890 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 11:36:57,891 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 11:36:57,891 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 11:36:57,891 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 11:36:57,891 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 11:36:57,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 11:36:57,892 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 11:36:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-09-08 11:36:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-08 11:36:57,923 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:57,924 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 11:36:57,926 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1783830804, now seen corresponding path program 1 times [2019-09-08 11:36:57,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:57,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:58,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:58,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:58,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:36:58,319 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 11:36:58,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:36:58,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:36:58,327 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:36:58,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:36:58,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:36:58,347 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2019-09-08 11:36:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:36:58,455 INFO L93 Difference]: Finished difference Result 153 states and 237 transitions. [2019-09-08 11:36:58,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:36:58,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-08 11:36:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:36:58,478 INFO L225 Difference]: With dead ends: 153 [2019-09-08 11:36:58,478 INFO L226 Difference]: Without dead ends: 99 [2019-09-08 11:36:58,485 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 11:36:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-09-08 11:36:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2019-09-08 11:36:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-09-08 11:36:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 140 transitions. [2019-09-08 11:36:58,546 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 140 transitions. Word has length 41 [2019-09-08 11:36:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:36:58,547 INFO L475 AbstractCegarLoop]: Abstraction has 97 states and 140 transitions. [2019-09-08 11:36:58,547 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:36:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 140 transitions. [2019-09-08 11:36:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 11:36:58,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:58,549 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 11:36:58,550 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1976266081, now seen corresponding path program 1 times [2019-09-08 11:36:58,550 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:58,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:58,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:58,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:58,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:36:58,652 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 11:36:58,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:36:58,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:36:58,655 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:36:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:36:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:36:58,656 INFO L87 Difference]: Start difference. First operand 97 states and 140 transitions. Second operand 3 states. [2019-09-08 11:36:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:36:58,708 INFO L93 Difference]: Finished difference Result 229 states and 348 transitions. [2019-09-08 11:36:58,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:36:58,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-08 11:36:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:36:58,715 INFO L225 Difference]: With dead ends: 229 [2019-09-08 11:36:58,715 INFO L226 Difference]: Without dead ends: 155 [2019-09-08 11:36:58,718 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 11:36:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-09-08 11:36:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2019-09-08 11:36:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-08 11:36:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 228 transitions. [2019-09-08 11:36:58,745 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 228 transitions. Word has length 42 [2019-09-08 11:36:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:36:58,745 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 228 transitions. [2019-09-08 11:36:58,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:36:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 228 transitions. [2019-09-08 11:36:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 11:36:58,747 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:58,747 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 11:36:58,748 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash -356684214, now seen corresponding path program 1 times [2019-09-08 11:36:58,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:58,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:58,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:58,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:58,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:36:58,913 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 11:36:58,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:36:58,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:36:58,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:36:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:36:58,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:36:58,915 INFO L87 Difference]: Start difference. First operand 153 states and 228 transitions. Second operand 5 states. [2019-09-08 11:36:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:36:59,083 INFO L93 Difference]: Finished difference Result 283 states and 433 transitions. [2019-09-08 11:36:59,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:36:59,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 11:36:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:36:59,087 INFO L225 Difference]: With dead ends: 283 [2019-09-08 11:36:59,087 INFO L226 Difference]: Without dead ends: 153 [2019-09-08 11:36:59,088 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 11:36:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-08 11:36:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-08 11:36:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-08 11:36:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 224 transitions. [2019-09-08 11:36:59,121 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 224 transitions. Word has length 43 [2019-09-08 11:36:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:36:59,121 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 224 transitions. [2019-09-08 11:36:59,121 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:36:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 224 transitions. [2019-09-08 11:36:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 11:36:59,126 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:59,126 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 11:36:59,127 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:59,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:59,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1803713809, now seen corresponding path program 1 times [2019-09-08 11:36:59,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:59,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:59,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:59,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:36:59,247 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 11:36:59,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:36:59,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:36:59,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:36:59,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:36:59,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:36:59,250 INFO L87 Difference]: Start difference. First operand 153 states and 224 transitions. Second operand 5 states. [2019-09-08 11:36:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:36:59,364 INFO L93 Difference]: Finished difference Result 283 states and 425 transitions. [2019-09-08 11:36:59,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:36:59,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 11:36:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:36:59,366 INFO L225 Difference]: With dead ends: 283 [2019-09-08 11:36:59,367 INFO L226 Difference]: Without dead ends: 153 [2019-09-08 11:36:59,368 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 11:36:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-08 11:36:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-08 11:36:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-08 11:36:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 222 transitions. [2019-09-08 11:36:59,390 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 222 transitions. Word has length 43 [2019-09-08 11:36:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:36:59,391 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 222 transitions. [2019-09-08 11:36:59,391 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:36:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 222 transitions. [2019-09-08 11:36:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 11:36:59,393 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:59,393 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 11:36:59,393 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash 649222954, now seen corresponding path program 1 times [2019-09-08 11:36:59,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:59,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:59,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:59,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:36:59,513 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 11:36:59,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:36:59,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:36:59,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:36:59,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:36:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:36:59,515 INFO L87 Difference]: Start difference. First operand 153 states and 222 transitions. Second operand 5 states. [2019-09-08 11:36:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:36:59,654 INFO L93 Difference]: Finished difference Result 673 states and 1018 transitions. [2019-09-08 11:36:59,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:36:59,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 11:36:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:36:59,658 INFO L225 Difference]: With dead ends: 673 [2019-09-08 11:36:59,658 INFO L226 Difference]: Without dead ends: 543 [2019-09-08 11:36:59,660 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:36:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-09-08 11:36:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 409. [2019-09-08 11:36:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2019-09-08 11:36:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 610 transitions. [2019-09-08 11:36:59,705 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 610 transitions. Word has length 43 [2019-09-08 11:36:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:36:59,706 INFO L475 AbstractCegarLoop]: Abstraction has 409 states and 610 transitions. [2019-09-08 11:36:59,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:36:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 610 transitions. [2019-09-08 11:36:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 11:36:59,708 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:59,708 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] [2019-09-08 11:36:59,708 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash 239806853, now seen corresponding path program 1 times [2019-09-08 11:36:59,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:59,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:59,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:59,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:36:59,780 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 11:36:59,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:36:59,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:36:59,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:36:59,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:36:59,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:36:59,783 INFO L87 Difference]: Start difference. First operand 409 states and 610 transitions. Second operand 3 states. [2019-09-08 11:36:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:36:59,874 INFO L93 Difference]: Finished difference Result 1117 states and 1672 transitions. [2019-09-08 11:36:59,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:36:59,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-09-08 11:36:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:36:59,882 INFO L225 Difference]: With dead ends: 1117 [2019-09-08 11:36:59,883 INFO L226 Difference]: Without dead ends: 731 [2019-09-08 11:36:59,884 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 11:36:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2019-09-08 11:36:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 717. [2019-09-08 11:36:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-09-08 11:36:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1040 transitions. [2019-09-08 11:36:59,957 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1040 transitions. Word has length 45 [2019-09-08 11:36:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:36:59,958 INFO L475 AbstractCegarLoop]: Abstraction has 717 states and 1040 transitions. [2019-09-08 11:36:59,958 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:36:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1040 transitions. [2019-09-08 11:36:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 11:36:59,959 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:36:59,959 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] [2019-09-08 11:36:59,960 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:36:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:36:59,960 INFO L82 PathProgramCache]: Analyzing trace with hash 259856196, now seen corresponding path program 1 times [2019-09-08 11:36:59,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:36:59,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:36:59,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:36:59,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:36:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:00,145 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 11:37:00,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:00,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:37:00,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:37:00,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:37:00,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:37:00,147 INFO L87 Difference]: Start difference. First operand 717 states and 1040 transitions. Second operand 5 states. [2019-09-08 11:37:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:00,295 INFO L93 Difference]: Finished difference Result 1875 states and 2731 transitions. [2019-09-08 11:37:00,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:37:00,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-08 11:37:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:00,302 INFO L225 Difference]: With dead ends: 1875 [2019-09-08 11:37:00,302 INFO L226 Difference]: Without dead ends: 1181 [2019-09-08 11:37:00,304 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:37:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-09-08 11:37:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 949. [2019-09-08 11:37:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2019-09-08 11:37:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1364 transitions. [2019-09-08 11:37:00,386 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1364 transitions. Word has length 45 [2019-09-08 11:37:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:00,386 INFO L475 AbstractCegarLoop]: Abstraction has 949 states and 1364 transitions. [2019-09-08 11:37:00,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:37:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1364 transitions. [2019-09-08 11:37:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-08 11:37:00,387 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:00,388 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 11:37:00,388 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -536301941, now seen corresponding path program 1 times [2019-09-08 11:37:00,389 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:00,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:00,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:00,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:00,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:00,505 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 11:37:00,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:00,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:37:00,506 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:37:00,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:37:00,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:37:00,506 INFO L87 Difference]: Start difference. First operand 949 states and 1364 transitions. Second operand 5 states. [2019-09-08 11:37:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:00,692 INFO L93 Difference]: Finished difference Result 1756 states and 2519 transitions. [2019-09-08 11:37:00,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:37:00,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-08 11:37:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:00,704 INFO L225 Difference]: With dead ends: 1756 [2019-09-08 11:37:00,704 INFO L226 Difference]: Without dead ends: 1754 [2019-09-08 11:37:00,705 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 11:37:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2019-09-08 11:37:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 997. [2019-09-08 11:37:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2019-09-08 11:37:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1408 transitions. [2019-09-08 11:37:00,818 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1408 transitions. Word has length 46 [2019-09-08 11:37:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:00,819 INFO L475 AbstractCegarLoop]: Abstraction has 997 states and 1408 transitions. [2019-09-08 11:37:00,819 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:37:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1408 transitions. [2019-09-08 11:37:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-08 11:37:00,821 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:00,822 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 11:37:00,822 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:00,822 INFO L82 PathProgramCache]: Analyzing trace with hash -121732072, now seen corresponding path program 1 times [2019-09-08 11:37:00,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:00,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:00,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:00,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:00,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:00,873 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 11:37:00,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:00,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:37:00,874 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:37:00,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:37:00,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:37:00,875 INFO L87 Difference]: Start difference. First operand 997 states and 1408 transitions. Second operand 3 states. [2019-09-08 11:37:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:01,002 INFO L93 Difference]: Finished difference Result 1932 states and 2782 transitions. [2019-09-08 11:37:01,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:37:01,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-09-08 11:37:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:01,010 INFO L225 Difference]: With dead ends: 1932 [2019-09-08 11:37:01,010 INFO L226 Difference]: Without dead ends: 1385 [2019-09-08 11:37:01,012 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 11:37:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-09-08 11:37:01,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1383. [2019-09-08 11:37:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2019-09-08 11:37:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1958 transitions. [2019-09-08 11:37:01,138 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1958 transitions. Word has length 46 [2019-09-08 11:37:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:01,139 INFO L475 AbstractCegarLoop]: Abstraction has 1383 states and 1958 transitions. [2019-09-08 11:37:01,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:37:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1958 transitions. [2019-09-08 11:37:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 11:37:01,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:01,141 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:37:01,141 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1242266490, now seen corresponding path program 1 times [2019-09-08 11:37:01,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:01,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:01,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:01,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:01,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:37:01,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:37:01,218 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 11:37:01,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:01,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:37:01,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:37:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 11:37:01,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:37:01,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 11:37:01,407 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 11:37:01,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 11:37:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:37:01,407 INFO L87 Difference]: Start difference. First operand 1383 states and 1958 transitions. Second operand 8 states. [2019-09-08 11:37:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:01,939 INFO L93 Difference]: Finished difference Result 3791 states and 5476 transitions. [2019-09-08 11:37:01,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 11:37:01,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-09-08 11:37:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:01,955 INFO L225 Difference]: With dead ends: 3791 [2019-09-08 11:37:01,955 INFO L226 Difference]: Without dead ends: 2769 [2019-09-08 11:37:01,958 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2019-09-08 11:37:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2019-09-08 11:37:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2059. [2019-09-08 11:37:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2019-09-08 11:37:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2926 transitions. [2019-09-08 11:37:02,173 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2926 transitions. Word has length 65 [2019-09-08 11:37:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:02,174 INFO L475 AbstractCegarLoop]: Abstraction has 2059 states and 2926 transitions. [2019-09-08 11:37:02,174 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 11:37:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2926 transitions. [2019-09-08 11:37:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 11:37:02,175 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:02,175 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:37:02,176 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:02,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1266011712, now seen corresponding path program 1 times [2019-09-08 11:37:02,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:02,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:02,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:02,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:02,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 11:37:02,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:02,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:37:02,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:37:02,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:37:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:37:02,273 INFO L87 Difference]: Start difference. First operand 2059 states and 2926 transitions. Second operand 5 states. [2019-09-08 11:37:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:02,701 INFO L93 Difference]: Finished difference Result 4459 states and 6440 transitions. [2019-09-08 11:37:02,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:37:02,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-09-08 11:37:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:02,720 INFO L225 Difference]: With dead ends: 4459 [2019-09-08 11:37:02,720 INFO L226 Difference]: Without dead ends: 3437 [2019-09-08 11:37:02,724 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 11:37:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2019-09-08 11:37:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 2735. [2019-09-08 11:37:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2019-09-08 11:37:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3894 transitions. [2019-09-08 11:37:02,989 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3894 transitions. Word has length 65 [2019-09-08 11:37:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:02,989 INFO L475 AbstractCegarLoop]: Abstraction has 2735 states and 3894 transitions. [2019-09-08 11:37:02,989 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:37:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3894 transitions. [2019-09-08 11:37:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 11:37:02,990 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:02,991 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 11:37:02,991 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1874787643, now seen corresponding path program 1 times [2019-09-08 11:37:02,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:02,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:02,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:02,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:02,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:03,093 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 11:37:03,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:03,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:37:03,094 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:37:03,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:37:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:37:03,095 INFO L87 Difference]: Start difference. First operand 2735 states and 3894 transitions. Second operand 5 states. [2019-09-08 11:37:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:03,720 INFO L93 Difference]: Finished difference Result 4599 states and 6666 transitions. [2019-09-08 11:37:03,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:37:03,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-08 11:37:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:03,749 INFO L225 Difference]: With dead ends: 4599 [2019-09-08 11:37:03,750 INFO L226 Difference]: Without dead ends: 3901 [2019-09-08 11:37:03,754 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 11:37:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2019-09-08 11:37:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3199. [2019-09-08 11:37:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2019-09-08 11:37:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4574 transitions. [2019-09-08 11:37:04,109 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4574 transitions. Word has length 66 [2019-09-08 11:37:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:04,109 INFO L475 AbstractCegarLoop]: Abstraction has 3199 states and 4574 transitions. [2019-09-08 11:37:04,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:37:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4574 transitions. [2019-09-08 11:37:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 11:37:04,113 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:04,113 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:37:04,114 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash -690333280, now seen corresponding path program 1 times [2019-09-08 11:37:04,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:04,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:04,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:04,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:04,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:37:04,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:04,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:37:04,217 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:37:04,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:37:04,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:37:04,219 INFO L87 Difference]: Start difference. First operand 3199 states and 4574 transitions. Second operand 3 states. [2019-09-08 11:37:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:04,442 INFO L93 Difference]: Finished difference Result 5549 states and 7999 transitions. [2019-09-08 11:37:04,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:37:04,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-08 11:37:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:04,456 INFO L225 Difference]: With dead ends: 5549 [2019-09-08 11:37:04,456 INFO L226 Difference]: Without dead ends: 2375 [2019-09-08 11:37:04,463 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 11:37:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2019-09-08 11:37:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2373. [2019-09-08 11:37:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2019-09-08 11:37:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3408 transitions. [2019-09-08 11:37:04,690 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3408 transitions. Word has length 67 [2019-09-08 11:37:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:04,691 INFO L475 AbstractCegarLoop]: Abstraction has 2373 states and 3408 transitions. [2019-09-08 11:37:04,691 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:37:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3408 transitions. [2019-09-08 11:37:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 11:37:04,698 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:04,698 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, 1, 1, 1] [2019-09-08 11:37:04,699 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:04,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1463051867, now seen corresponding path program 1 times [2019-09-08 11:37:04,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:04,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:04,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:04,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:04,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:37:04,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:37:04,946 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) [2019-09-08 11:37:04,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:37:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:05,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:37:05,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:37:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 11:37:05,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:37:05,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 11:37:05,223 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 11:37:05,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 11:37:05,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-09-08 11:37:05,225 INFO L87 Difference]: Start difference. First operand 2373 states and 3408 transitions. Second operand 12 states. [2019-09-08 11:37:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:09,733 INFO L93 Difference]: Finished difference Result 19991 states and 28183 transitions. [2019-09-08 11:37:09,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-08 11:37:09,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2019-09-08 11:37:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:09,810 INFO L225 Difference]: With dead ends: 19991 [2019-09-08 11:37:09,811 INFO L226 Difference]: Without dead ends: 17657 [2019-09-08 11:37:09,820 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=770, Invalid=3262, Unknown=0, NotChecked=0, Total=4032 [2019-09-08 11:37:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17657 states. [2019-09-08 11:37:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17657 to 6836. [2019-09-08 11:37:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6836 states. [2019-09-08 11:37:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6836 states to 6836 states and 9402 transitions. [2019-09-08 11:37:10,582 INFO L78 Accepts]: Start accepts. Automaton has 6836 states and 9402 transitions. Word has length 67 [2019-09-08 11:37:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:10,582 INFO L475 AbstractCegarLoop]: Abstraction has 6836 states and 9402 transitions. [2019-09-08 11:37:10,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 11:37:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6836 states and 9402 transitions. [2019-09-08 11:37:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 11:37:10,584 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:10,584 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 11:37:10,584 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:10,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1022906900, now seen corresponding path program 1 times [2019-09-08 11:37:10,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:10,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:10,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:10,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:10,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:10,811 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 11:37:10,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:37:10,815 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:37:10,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:10,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 11:37:10,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:37:11,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:37:11,710 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 11:37:11,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:37:11,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 21 [2019-09-08 11:37:11,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 11:37:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 11:37:11,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2019-09-08 11:37:11,716 INFO L87 Difference]: Start difference. First operand 6836 states and 9402 transitions. Second operand 21 states. [2019-09-08 11:37:11,907 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-08 11:37:12,555 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2019-09-08 11:37:12,757 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2019-09-08 11:37:13,129 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 11:37:13,346 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 11:37:13,639 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:37:16,297 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-08 11:37:17,070 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 11:37:17,467 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:37:17,934 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:37:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:21,676 INFO L93 Difference]: Finished difference Result 52869 states and 72968 transitions. [2019-09-08 11:37:21,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-08 11:37:21,676 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2019-09-08 11:37:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:21,780 INFO L225 Difference]: With dead ends: 52869 [2019-09-08 11:37:21,780 INFO L226 Difference]: Without dead ends: 47287 [2019-09-08 11:37:21,799 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1151, Invalid=4549, Unknown=0, NotChecked=0, Total=5700 [2019-09-08 11:37:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47287 states. [2019-09-08 11:37:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47287 to 24754. [2019-09-08 11:37:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24754 states. [2019-09-08 11:37:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24754 states to 24754 states and 34093 transitions. [2019-09-08 11:37:25,131 INFO L78 Accepts]: Start accepts. Automaton has 24754 states and 34093 transitions. Word has length 68 [2019-09-08 11:37:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:25,131 INFO L475 AbstractCegarLoop]: Abstraction has 24754 states and 34093 transitions. [2019-09-08 11:37:25,131 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 11:37:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 24754 states and 34093 transitions. [2019-09-08 11:37:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 11:37:25,133 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:25,133 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 11:37:25,134 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:25,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:25,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1046652122, now seen corresponding path program 1 times [2019-09-08 11:37:25,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:25,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:25,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:25,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:25,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:25,320 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 11:37:25,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:37:25,320 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:37:25,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:25,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 11:37:25,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:37:25,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:37:25,697 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 11:37:25,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:37:25,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 11:37:25,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 11:37:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 11:37:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-09-08 11:37:25,711 INFO L87 Difference]: Start difference. First operand 24754 states and 34093 transitions. Second operand 17 states. [2019-09-08 11:37:40,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:40,492 INFO L93 Difference]: Finished difference Result 144274 states and 197862 transitions. [2019-09-08 11:37:40,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 11:37:40,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2019-09-08 11:37:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:40,709 INFO L225 Difference]: With dead ends: 144274 [2019-09-08 11:37:40,709 INFO L226 Difference]: Without dead ends: 123426 [2019-09-08 11:37:40,769 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=716, Invalid=2146, Unknown=0, NotChecked=0, Total=2862 [2019-09-08 11:37:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123426 states. [2019-09-08 11:37:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123426 to 57473. [2019-09-08 11:37:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57473 states. [2019-09-08 11:37:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57473 states to 57473 states and 79202 transitions. [2019-09-08 11:37:48,577 INFO L78 Accepts]: Start accepts. Automaton has 57473 states and 79202 transitions. Word has length 68 [2019-09-08 11:37:48,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:48,577 INFO L475 AbstractCegarLoop]: Abstraction has 57473 states and 79202 transitions. [2019-09-08 11:37:48,578 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 11:37:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 57473 states and 79202 transitions. [2019-09-08 11:37:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-08 11:37:48,581 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:48,581 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] [2019-09-08 11:37:48,581 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2040085861, now seen corresponding path program 1 times [2019-09-08 11:37:48,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:48,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:48,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:48,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:48,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:48,624 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 11:37:48,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:37:48,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:37:48,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:37:48,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:37:48,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:37:48,625 INFO L87 Difference]: Start difference. First operand 57473 states and 79202 transitions. Second operand 3 states. [2019-09-08 11:37:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:53,243 INFO L93 Difference]: Finished difference Result 104615 states and 144564 transitions. [2019-09-08 11:37:53,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:37:53,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-08 11:37:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:53,332 INFO L225 Difference]: With dead ends: 104615 [2019-09-08 11:37:53,333 INFO L226 Difference]: Without dead ends: 47348 [2019-09-08 11:37:53,447 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 11:37:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47348 states. [2019-09-08 11:38:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47348 to 47348. [2019-09-08 11:38:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47348 states. [2019-09-08 11:38:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47348 states to 47348 states and 64675 transitions. [2019-09-08 11:38:00,116 INFO L78 Accepts]: Start accepts. Automaton has 47348 states and 64675 transitions. Word has length 69 [2019-09-08 11:38:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:38:00,117 INFO L475 AbstractCegarLoop]: Abstraction has 47348 states and 64675 transitions. [2019-09-08 11:38:00,117 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:38:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 47348 states and 64675 transitions. [2019-09-08 11:38:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-08 11:38:00,119 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:38:00,119 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] [2019-09-08 11:38:00,119 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:38:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:38:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash 9977577, now seen corresponding path program 1 times [2019-09-08 11:38:00,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:38:00,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:38:00,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:38:00,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:38:00,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:38:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:38:01,191 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 11:38:01,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:38:01,192 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:38:01,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:38:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:38:01,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:38:01,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:38:01,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:02,408 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 11:38:02,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:38:02,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2019-09-08 11:38:02,412 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 11:38:02,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 11:38:02,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2019-09-08 11:38:02,413 INFO L87 Difference]: Start difference. First operand 47348 states and 64675 transitions. Second operand 28 states. [2019-09-08 11:38:03,466 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-08 11:38:03,681 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-08 11:38:04,024 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-08 11:38:04,405 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-08 11:38:04,571 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-08 11:38:04,818 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2019-09-08 11:38:05,257 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 94 [2019-09-08 11:38:05,581 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2019-09-08 11:38:05,893 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-08 11:38:06,117 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-08 11:38:06,428 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-08 11:38:06,645 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-08 11:38:06,890 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-08 11:38:07,205 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-08 11:38:07,440 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 11:38:07,939 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2019-09-08 11:38:08,262 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 11:38:08,705 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 11:38:09,003 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-08 11:38:09,320 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:38:09,639 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 11:38:10,042 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2019-09-08 11:38:10,479 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 103 [2019-09-08 11:38:10,640 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 11:38:10,818 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-08 11:38:11,081 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-08 11:38:11,389 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-08 11:38:11,778 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 95 [2019-09-08 11:38:12,044 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-08 11:38:12,432 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 99 [2019-09-08 11:38:12,726 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 11:38:12,921 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-08 11:38:13,115 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-08 11:38:13,471 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2019-09-08 11:38:13,855 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-08 11:38:14,093 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2019-09-08 11:38:14,481 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2019-09-08 11:38:14,992 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2019-09-08 11:38:15,193 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 11:38:15,635 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 108 [2019-09-08 11:38:15,892 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-08 11:38:16,507 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2019-09-08 11:38:16,716 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:38:17,181 WARN L188 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 112 [2019-09-08 11:38:17,478 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 11:38:17,650 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:38:17,870 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 11:38:18,140 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-08 11:38:18,564 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-08 11:38:19,097 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:38:19,261 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 11:38:19,511 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2019-09-08 11:38:19,958 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2019-09-08 11:38:20,382 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2019-09-08 11:38:20,834 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2019-09-08 11:38:21,002 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-09-08 11:38:21,362 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-08 11:38:21,628 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 11:38:22,040 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-08 11:38:22,333 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 11:38:22,537 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-09-08 11:38:22,812 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-08 11:38:23,120 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-08 11:38:23,445 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-08 11:38:23,809 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:38:24,432 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 11:38:24,673 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-08 11:38:25,122 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 11:38:25,516 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 11:38:25,787 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-08 11:38:26,156 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-08 11:38:26,565 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-08 11:38:26,978 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:38:27,278 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-08 11:38:27,709 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:38:28,050 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-08 11:38:28,393 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 11:38:28,736 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2019-09-08 11:38:29,031 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 11:38:29,415 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-09-08 11:38:29,724 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 11:38:29,871 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 11:38:30,033 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 11:38:30,620 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2019-09-08 11:38:31,017 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:38:31,314 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 11:38:31,590 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 11:38:31,986 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-08 11:38:32,352 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-08 11:38:32,509 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 11:38:32,753 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 11:38:33,418 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-08 11:38:33,708 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-08 11:38:33,875 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-08 11:38:34,030 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-08 11:38:34,468 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 11:38:34,872 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 11:38:35,022 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 11:38:35,386 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-08 11:38:35,621 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 11:38:35,782 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:38:36,247 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-08 11:38:36,667 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:38:37,017 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-08 11:38:37,471 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-08 11:38:37,695 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 11:38:38,149 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-08 11:38:38,581 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:38:39,058 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2019-09-08 11:38:39,350 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-08 11:38:39,714 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-08 11:38:40,272 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-08 11:38:40,475 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-08 11:38:40,940 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2019-09-08 11:38:41,407 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2019-09-08 11:38:41,779 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2019-09-08 11:38:42,251 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2019-09-08 11:38:42,567 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-08 11:38:43,024 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 11:38:43,590 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2019-09-08 11:38:43,952 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2019-09-08 11:38:44,546 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:38:44,828 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:38:45,068 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:38:45,234 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:38:45,526 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:38:45,851 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-08 11:38:46,078 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-08 11:38:46,608 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-08 11:38:46,858 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-08 11:38:47,050 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-08 11:38:47,256 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 11:38:47,604 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2019-09-08 11:38:47,874 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-08 11:38:48,397 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:38:48,999 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 11:38:49,273 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 11:38:49,546 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-08 11:38:49,722 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-08 11:38:50,141 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-08 11:38:50,365 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 11:38:50,805 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-08 11:38:51,072 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-08 11:38:51,532 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:38:52,050 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-09-08 11:38:52,341 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:38:52,566 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:38:52,739 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:38:53,207 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2019-09-08 11:38:53,578 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 11:38:53,741 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 11:38:54,126 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 11:38:54,337 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 11:38:54,558 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-08 11:38:54,754 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-08 11:38:55,218 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-08 11:38:55,558 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-08 11:38:55,816 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 11:38:56,049 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 11:38:56,233 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:38:56,557 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 11:38:56,940 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-08 11:38:57,162 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 11:38:57,320 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-08 11:38:57,677 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:38:57,871 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-08 11:38:58,414 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:38:58,803 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2019-09-08 11:38:58,991 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 11:38:59,188 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-08 11:38:59,459 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2019-09-08 11:38:59,790 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:39:00,313 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:39:00,656 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-09-08 11:39:00,985 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2019-09-08 11:39:01,455 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 109 [2019-09-08 11:39:01,711 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-08 11:39:01,872 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 11:39:02,109 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 11:39:02,291 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-08 11:39:02,773 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 11:39:03,155 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 11:39:03,541 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2019-09-08 11:39:03,935 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2019-09-08 11:39:04,162 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 11:39:04,653 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2019-09-08 11:39:04,809 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:39:04,942 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:39:05,126 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 11:39:05,284 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 11:39:05,602 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2019-09-08 11:39:06,004 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2019-09-08 11:39:06,339 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-08 11:39:06,809 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2019-09-08 11:39:07,041 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 11:39:07,395 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 11:39:07,566 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 11:39:07,736 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 11:39:08,065 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 11:39:08,672 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2019-09-08 11:39:09,095 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 11:39:10,191 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2019-09-08 11:39:10,626 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 99 [2019-09-08 11:39:12,461 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-08 11:39:12,746 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-08 11:39:15,805 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 11:39:16,395 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:39:16,694 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 11:39:17,065 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-08 11:39:17,591 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-08 11:39:17,932 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-08 11:39:18,459 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 11:39:18,971 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 11:39:19,608 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-08 11:39:20,181 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-08 11:39:20,502 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-08 11:39:21,271 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2019-09-08 11:39:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:39:30,403 INFO L93 Difference]: Finished difference Result 144034 states and 196658 transitions. [2019-09-08 11:39:30,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 300 states. [2019-09-08 11:39:30,404 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2019-09-08 11:39:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:39:30,555 INFO L225 Difference]: With dead ends: 144034 [2019-09-08 11:39:30,555 INFO L226 Difference]: Without dead ends: 112889 [2019-09-08 11:39:30,612 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 52 SyntacticMatches, 10 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45730 ImplicationChecksByTransitivity, 65.5s TimeCoverageRelationStatistics Valid=12407, Invalid=92893, Unknown=0, NotChecked=0, Total=105300 [2019-09-08 11:39:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112889 states. [2019-09-08 11:39:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112889 to 45577. [2019-09-08 11:39:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45577 states. [2019-09-08 11:39:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45577 states to 45577 states and 62674 transitions. [2019-09-08 11:39:37,310 INFO L78 Accepts]: Start accepts. Automaton has 45577 states and 62674 transitions. Word has length 69 [2019-09-08 11:39:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:39:37,311 INFO L475 AbstractCegarLoop]: Abstraction has 45577 states and 62674 transitions. [2019-09-08 11:39:37,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 11:39:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 45577 states and 62674 transitions. [2019-09-08 11:39:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:39:37,312 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:39:37,313 INFO L399 BasicCegarLoop]: trace histogram [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 11:39:37,313 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:39:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:39:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash -337527698, now seen corresponding path program 1 times [2019-09-08 11:39:37,313 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:39:37,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:39:37,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:37,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:37,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:39:37,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:39:37,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:39:37,366 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:39:37,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:39:37,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:39:37,366 INFO L87 Difference]: Start difference. First operand 45577 states and 62674 transitions. Second operand 3 states. [2019-09-08 11:39:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:39:42,406 INFO L93 Difference]: Finished difference Result 68050 states and 93978 transitions. [2019-09-08 11:39:42,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:39:42,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 11:39:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:39:42,434 INFO L225 Difference]: With dead ends: 68050 [2019-09-08 11:39:42,434 INFO L226 Difference]: Without dead ends: 25381 [2019-09-08 11:39:42,463 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 11:39:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25381 states. [2019-09-08 11:39:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25381 to 25379. [2019-09-08 11:39:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25379 states. [2019-09-08 11:39:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25379 states to 25379 states and 34154 transitions. [2019-09-08 11:39:45,661 INFO L78 Accepts]: Start accepts. Automaton has 25379 states and 34154 transitions. Word has length 70 [2019-09-08 11:39:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:39:45,661 INFO L475 AbstractCegarLoop]: Abstraction has 25379 states and 34154 transitions. [2019-09-08 11:39:45,661 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:39:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 25379 states and 34154 transitions. [2019-09-08 11:39:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:39:45,662 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:39:45,663 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] [2019-09-08 11:39:45,663 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:39:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:39:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1576866514, now seen corresponding path program 1 times [2019-09-08 11:39:45,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:39:45,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:39:45,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:45,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:45,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:46,107 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 11:39:46,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:39:46,108 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 11:39:46,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:46,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-08 11:39:46,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:39:46,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:46,929 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-09-08 11:39:46,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 11:39:47,675 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-09-08 11:39:47,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 11:39:48,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:48,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:48,503 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 11:39:48,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:39:48,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2019-09-08 11:39:48,507 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-08 11:39:48,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-08 11:39:48,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 11:39:48,508 INFO L87 Difference]: Start difference. First operand 25379 states and 34154 transitions. Second operand 39 states. [2019-09-08 11:39:49,054 WARN L188 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 93 [2019-09-08 11:39:50,252 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2019-09-08 11:39:50,595 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2019-09-08 11:39:50,897 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:39:51,245 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:39:53,317 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 11:39:53,609 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 11:39:53,937 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2019-09-08 11:39:54,213 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-08 11:39:54,506 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 11:39:54,728 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-08 11:40:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:40:01,315 INFO L93 Difference]: Finished difference Result 39524 states and 53545 transitions. [2019-09-08 11:40:01,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-08 11:40:01,316 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 70 [2019-09-08 11:40:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:40:01,347 INFO L225 Difference]: With dead ends: 39524 [2019-09-08 11:40:01,347 INFO L226 Difference]: Without dead ends: 35355 [2019-09-08 11:40:01,355 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=550, Invalid=2990, Unknown=0, NotChecked=0, Total=3540 [2019-09-08 11:40:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35355 states. [2019-09-08 11:40:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35355 to 25541. [2019-09-08 11:40:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25541 states. [2019-09-08 11:40:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25541 states to 25541 states and 34366 transitions. [2019-09-08 11:40:04,851 INFO L78 Accepts]: Start accepts. Automaton has 25541 states and 34366 transitions. Word has length 70 [2019-09-08 11:40:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:40:04,851 INFO L475 AbstractCegarLoop]: Abstraction has 25541 states and 34366 transitions. [2019-09-08 11:40:04,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-08 11:40:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 25541 states and 34366 transitions. [2019-09-08 11:40:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:40:04,853 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:40:04,853 INFO L399 BasicCegarLoop]: trace histogram [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 11:40:04,853 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:40:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:40:04,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1191255918, now seen corresponding path program 1 times [2019-09-08 11:40:04,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:40:04,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:40:04,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:04,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:04,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:04,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:40:04,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:40:04,895 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:40:04,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:40:04,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:40:04,896 INFO L87 Difference]: Start difference. First operand 25541 states and 34366 transitions. Second operand 3 states. [2019-09-08 11:40:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:40:06,898 INFO L93 Difference]: Finished difference Result 37186 states and 50097 transitions. [2019-09-08 11:40:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:40:06,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 11:40:06,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:40:06,913 INFO L225 Difference]: With dead ends: 37186 [2019-09-08 11:40:06,913 INFO L226 Difference]: Without dead ends: 13080 [2019-09-08 11:40:06,928 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 11:40:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13080 states. [2019-09-08 11:40:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13080 to 13078. [2019-09-08 11:40:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13078 states. [2019-09-08 11:40:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13078 states to 13078 states and 17180 transitions. [2019-09-08 11:40:08,702 INFO L78 Accepts]: Start accepts. Automaton has 13078 states and 17180 transitions. Word has length 70 [2019-09-08 11:40:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:40:08,703 INFO L475 AbstractCegarLoop]: Abstraction has 13078 states and 17180 transitions. [2019-09-08 11:40:08,703 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:40:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13078 states and 17180 transitions. [2019-09-08 11:40:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:40:08,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:40:08,704 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] [2019-09-08 11:40:08,704 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:40:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:40:08,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1734312840, now seen corresponding path program 1 times [2019-09-08 11:40:08,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:40:08,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:40:08,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:08,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:08,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 11:40:08,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:40:08,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:40:08,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:40:08,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:40:08,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:40:08,733 INFO L87 Difference]: Start difference. First operand 13078 states and 17180 transitions. Second operand 3 states. [2019-09-08 11:40:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:40:09,906 INFO L93 Difference]: Finished difference Result 20506 states and 27095 transitions. [2019-09-08 11:40:09,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:40:09,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 11:40:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:40:09,915 INFO L225 Difference]: With dead ends: 20506 [2019-09-08 11:40:09,915 INFO L226 Difference]: Without dead ends: 7704 [2019-09-08 11:40:09,924 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 11:40:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7704 states. [2019-09-08 11:40:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7704 to 7704. [2019-09-08 11:40:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7704 states. [2019-09-08 11:40:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 10097 transitions. [2019-09-08 11:40:11,010 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 10097 transitions. Word has length 70 [2019-09-08 11:40:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:40:11,010 INFO L475 AbstractCegarLoop]: Abstraction has 7704 states and 10097 transitions. [2019-09-08 11:40:11,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:40:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 10097 transitions. [2019-09-08 11:40:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 11:40:11,013 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:40:11,014 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] [2019-09-08 11:40:11,014 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:40:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:40:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash 430720802, now seen corresponding path program 1 times [2019-09-08 11:40:11,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:40:11,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:40:11,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:11,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:11,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:11,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:40:11,497 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 11:40:11,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:11,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-08 11:40:11,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:40:11,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:12,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:40:12,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2019-09-08 11:40:12,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 11:40:12,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 11:40:12,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2019-09-08 11:40:12,186 INFO L87 Difference]: Start difference. First operand 7704 states and 10097 transitions. Second operand 26 states. [2019-09-08 11:40:12,821 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:40:13,038 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:40:13,232 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 11:40:13,422 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 11:40:13,793 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-09-08 11:40:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:40:17,353 INFO L93 Difference]: Finished difference Result 19505 states and 25636 transitions. [2019-09-08 11:40:17,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 11:40:17,353 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 71 [2019-09-08 11:40:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:40:17,367 INFO L225 Difference]: With dead ends: 19505 [2019-09-08 11:40:17,368 INFO L226 Difference]: Without dead ends: 15438 [2019-09-08 11:40:17,373 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=527, Invalid=1825, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 11:40:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15438 states. [2019-09-08 11:40:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15438 to 7768. [2019-09-08 11:40:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7768 states. [2019-09-08 11:40:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 10197 transitions. [2019-09-08 11:40:18,510 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 10197 transitions. Word has length 71 [2019-09-08 11:40:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:40:18,511 INFO L475 AbstractCegarLoop]: Abstraction has 7768 states and 10197 transitions. [2019-09-08 11:40:18,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 11:40:18,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 10197 transitions. [2019-09-08 11:40:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 11:40:18,512 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:40:18,512 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] [2019-09-08 11:40:18,512 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:40:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:40:18,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1092966912, now seen corresponding path program 1 times [2019-09-08 11:40:18,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:40:18,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:40:18,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:18,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:18,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 11:40:18,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:40:18,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:40:18,548 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:40:18,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:40:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:40:18,549 INFO L87 Difference]: Start difference. First operand 7768 states and 10197 transitions. Second operand 3 states. [2019-09-08 11:40:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:40:19,474 INFO L93 Difference]: Finished difference Result 12999 states and 17047 transitions. [2019-09-08 11:40:19,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:40:19,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-08 11:40:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:40:19,478 INFO L225 Difference]: With dead ends: 12999 [2019-09-08 11:40:19,479 INFO L226 Difference]: Without dead ends: 5293 [2019-09-08 11:40:19,482 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 11:40:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2019-09-08 11:40:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5293. [2019-09-08 11:40:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5293 states. [2019-09-08 11:40:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 6825 transitions. [2019-09-08 11:40:20,201 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 6825 transitions. Word has length 71 [2019-09-08 11:40:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:40:20,201 INFO L475 AbstractCegarLoop]: Abstraction has 5293 states and 6825 transitions. [2019-09-08 11:40:20,201 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:40:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 6825 transitions. [2019-09-08 11:40:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-08 11:40:20,203 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:40:20,204 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:20,204 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:40:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:40:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -165598935, now seen corresponding path program 1 times [2019-09-08 11:40:20,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:40:20,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:40:20,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:20,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:20,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:21,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:40:21,687 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:40:21,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:21,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 11:40:21,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:40:21,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:21,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:22,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:22,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:22,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:40:22,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 12] total 36 [2019-09-08 11:40:22,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-08 11:40:22,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-08 11:40:22,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1177, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 11:40:22,370 INFO L87 Difference]: Start difference. First operand 5293 states and 6825 transitions. Second operand 36 states. [2019-09-08 11:40:23,121 WARN L188 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2019-09-08 11:40:23,724 WARN L188 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 126 [2019-09-08 11:40:24,470 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-08 11:40:24,993 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2019-09-08 11:40:25,483 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2019-09-08 11:40:26,062 WARN L188 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2019-09-08 11:40:26,500 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2019-09-08 11:40:26,896 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2019-09-08 11:40:27,428 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 124 [2019-09-08 11:40:28,078 WARN L188 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 129 [2019-09-08 11:40:28,715 WARN L188 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 134 [2019-09-08 11:40:29,585 WARN L188 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 165 [2019-09-08 11:40:30,521 WARN L188 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 167 [2019-09-08 11:40:31,108 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2019-09-08 11:40:31,734 WARN L188 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 137 [2019-09-08 11:40:32,350 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 137 [2019-09-08 11:40:32,990 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 136 [2019-09-08 11:40:33,764 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2019-09-08 11:40:34,297 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2019-09-08 11:40:34,608 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2019-09-08 11:40:34,988 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-09-08 11:40:35,412 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2019-09-08 11:40:35,944 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2019-09-08 11:40:36,212 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-09-08 11:40:36,829 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 120 [2019-09-08 11:40:37,206 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2019-09-08 11:40:37,412 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2019-09-08 11:40:38,013 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 122 [2019-09-08 11:40:38,376 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 98 [2019-09-08 11:40:38,624 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2019-09-08 11:40:38,958 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2019-09-08 11:40:39,582 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2019-09-08 11:40:39,917 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2019-09-08 11:40:40,457 WARN L188 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 126 [2019-09-08 11:40:40,723 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-09-08 11:40:41,118 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 106 [2019-09-08 11:40:41,771 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2019-09-08 11:40:44,225 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2019-09-08 11:40:44,683 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 115 [2019-09-08 11:40:45,287 WARN L188 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 134 [2019-09-08 11:40:45,913 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 126 [2019-09-08 11:40:46,475 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-08 11:40:46,819 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-08 11:40:47,187 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2019-09-08 11:40:47,478 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 86 [2019-09-08 11:40:47,965 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 117 [2019-09-08 11:40:48,292 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-08 11:40:48,624 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2019-09-08 11:40:49,466 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 115 [2019-09-08 11:40:49,703 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 11:40:50,074 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-08 11:40:50,597 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-08 11:40:50,926 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2019-09-08 11:40:51,537 WARN L188 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 131 [2019-09-08 11:40:51,885 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2019-09-08 11:40:52,263 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2019-09-08 11:40:52,539 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-08 11:40:53,136 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 134 [2019-09-08 11:40:53,497 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 92 [2019-09-08 11:40:54,333 WARN L188 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 131 [2019-09-08 11:40:54,619 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2019-09-08 11:40:55,043 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 108 [2019-09-08 11:40:55,563 WARN L188 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2019-09-08 11:40:55,938 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2019-09-08 11:40:56,277 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2019-09-08 11:40:56,702 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 105 [2019-09-08 11:40:57,048 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2019-09-08 11:40:57,783 WARN L188 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 156 [2019-09-08 11:40:58,654 WARN L188 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 158 [2019-09-08 11:40:58,925 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2019-09-08 11:40:59,336 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2019-09-08 11:40:59,596 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2019-09-08 11:40:59,925 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2019-09-08 11:41:00,285 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2019-09-08 11:41:00,645 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2019-09-08 11:41:01,047 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2019-09-08 11:41:01,355 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2019-09-08 11:41:01,768 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2019-09-08 11:41:02,183 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2019-09-08 11:41:02,584 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 89 [2019-09-08 11:41:03,028 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2019-09-08 11:41:03,538 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-08 11:41:03,866 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2019-09-08 11:41:04,179 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-08 11:41:05,306 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-08 11:41:05,865 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2019-09-08 11:41:06,382 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2019-09-08 11:41:06,755 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2019-09-08 11:41:07,155 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2019-09-08 11:41:07,485 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2019-09-08 11:41:07,688 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 11:41:07,938 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2019-09-08 11:41:08,193 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-08 11:41:08,758 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-08 11:41:09,010 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 11:41:09,207 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-08 11:41:09,535 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2019-09-08 11:41:10,105 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2019-09-08 11:41:10,612 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2019-09-08 11:41:10,869 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-09-08 11:41:11,802 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 91 [2019-09-08 11:41:12,264 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2019-09-08 11:41:12,634 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-08 11:41:12,922 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 11:41:13,206 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2019-09-08 11:41:13,563 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2019-09-08 11:41:14,958 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2019-09-08 11:41:15,534 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 100 [2019-09-08 11:41:16,006 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2019-09-08 11:41:16,391 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-08 11:41:16,748 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2019-09-08 11:41:17,152 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-08 11:41:17,667 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2019-09-08 11:41:17,941 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 11:41:18,389 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-08 11:41:18,840 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:41:19,222 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2019-09-08 11:41:19,721 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2019-09-08 11:41:19,991 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-08 11:41:20,678 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:41:21,205 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-08 11:41:21,411 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 11:41:21,746 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-08 11:41:22,627 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2019-09-08 11:41:23,092 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-09-08 11:41:23,380 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 11:41:23,666 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-08 11:41:23,944 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:41:24,327 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-08 11:41:24,617 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2019-09-08 11:41:24,907 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 11:41:25,383 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2019-09-08 11:41:25,895 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2019-09-08 11:41:26,233 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2019-09-08 11:41:26,496 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 11:41:27,035 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2019-09-08 11:41:27,380 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2019-09-08 11:41:27,755 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2019-09-08 11:41:28,724 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2019-09-08 11:41:28,949 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-09-08 11:41:29,298 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-08 11:41:29,848 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 11:41:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:41:32,536 INFO L93 Difference]: Finished difference Result 18345 states and 23865 transitions. [2019-09-08 11:41:32,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2019-09-08 11:41:32,537 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 115 [2019-09-08 11:41:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:41:32,553 INFO L225 Difference]: With dead ends: 18345 [2019-09-08 11:41:32,553 INFO L226 Difference]: Without dead ends: 14907 [2019-09-08 11:41:32,558 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24617 ImplicationChecksByTransitivity, 61.4s TimeCoverageRelationStatistics Valid=6360, Invalid=58409, Unknown=1, NotChecked=0, Total=64770 [2019-09-08 11:41:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14907 states. [2019-09-08 11:41:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14907 to 5573. [2019-09-08 11:41:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5573 states. [2019-09-08 11:41:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 7150 transitions. [2019-09-08 11:41:33,561 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 7150 transitions. Word has length 115 [2019-09-08 11:41:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:41:33,562 INFO L475 AbstractCegarLoop]: Abstraction has 5573 states and 7150 transitions. [2019-09-08 11:41:33,562 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-08 11:41:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 7150 transitions. [2019-09-08 11:41:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-08 11:41:33,564 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:41:33,565 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:33,565 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:41:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:41:33,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1477981657, now seen corresponding path program 1 times [2019-09-08 11:41:33,565 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:41:33,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:41:33,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:41:33,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:41:33,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:41:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:41:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:41:33,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:41:33,987 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:41:34,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:41:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:41:34,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:41:34,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:41:34,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:34,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:41:34,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:41:34,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2019-09-08 11:41:34,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 11:41:34,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 11:41:34,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2019-09-08 11:41:34,949 INFO L87 Difference]: Start difference. First operand 5573 states and 7150 transitions. Second operand 25 states. [2019-09-08 11:41:35,351 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-08 11:41:36,135 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-08 11:41:36,661 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-08 11:41:36,905 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-08 11:41:37,419 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-08 11:41:37,915 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 11:41:38,894 WARN L188 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-08 11:41:39,307 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-08 11:41:40,282 WARN L188 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-08 11:41:40,576 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-08 11:41:41,045 WARN L188 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2019-09-08 11:41:41,810 WARN L188 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-08 11:41:42,435 WARN L188 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2019-09-08 11:41:43,010 WARN L188 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-08 11:41:43,351 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-08 11:41:43,849 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-08 11:41:44,820 WARN L188 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-08 11:41:45,367 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2019-09-08 11:41:45,720 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 11:41:46,362 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-08 11:41:46,772 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-08 11:41:47,306 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2019-09-08 11:41:48,555 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-08 11:41:48,801 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-08 11:41:49,190 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-08 11:41:49,417 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-08 11:41:49,885 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 11:41:50,178 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-08 11:41:50,620 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 11:41:51,166 WARN L188 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2019-09-08 11:41:51,679 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-08 11:41:52,502 WARN L188 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-09-08 11:41:53,663 WARN L188 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2019-09-08 11:41:54,197 WARN L188 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 11:41:54,473 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:41:55,055 WARN L188 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2019-09-08 11:41:55,870 WARN L188 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2019-09-08 11:41:56,288 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 11:41:56,883 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-09-08 11:41:57,305 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-08 11:41:57,657 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 11:41:58,386 WARN L188 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2019-09-08 11:41:58,678 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-08 11:41:59,304 WARN L188 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-09-08 11:42:00,681 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-08 11:42:01,047 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-08 11:42:01,312 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:42:03,469 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-09-08 11:42:03,832 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2019-09-08 11:42:04,515 WARN L188 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-08 11:42:05,619 WARN L188 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-09-08 11:42:06,224 WARN L188 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2019-09-08 11:42:06,575 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:42:07,400 WARN L188 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-09-08 11:42:07,953 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2019-09-08 11:42:08,343 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 11:42:08,815 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-08 11:42:09,331 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 11:42:10,375 WARN L188 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-09-08 11:42:10,950 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 11:42:11,996 WARN L188 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-09-08 11:42:12,420 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-08 11:42:12,724 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:42:13,444 WARN L188 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-08 11:42:13,749 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:42:14,067 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-08 11:42:14,689 WARN L188 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 11:42:15,200 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2019-09-08 11:42:15,542 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 11:42:15,776 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-08 11:42:16,971 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-09-08 11:42:17,564 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2019-09-08 11:42:18,472 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 11:42:18,728 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-08 11:42:19,557 WARN L188 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2019-09-08 11:42:20,411 WARN L188 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2019-09-08 11:42:21,143 WARN L188 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2019-09-08 11:42:22,229 WARN L188 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-08 11:42:22,721 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2019-09-08 11:42:23,337 WARN L188 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2019-09-08 11:42:24,399 WARN L188 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-08 11:42:25,317 WARN L188 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2019-09-08 11:42:26,073 WARN L188 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-08 11:42:26,822 WARN L188 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2019-09-08 11:42:28,131 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-08 11:42:28,422 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-08 11:42:28,892 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:42:29,376 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:42:29,761 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-08 11:42:32,196 WARN L188 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 11:42:32,577 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-08 11:42:33,678 WARN L188 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2019-09-08 11:42:34,009 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:42:34,254 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-08 11:42:34,804 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-08 11:42:35,148 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:42:35,405 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 11:42:35,735 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:42:36,210 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 11:42:36,643 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 11:42:37,374 WARN L188 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:42:37,745 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:42:38,050 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-08 11:42:38,332 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 11:42:38,686 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 11:42:39,090 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:42:39,369 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 11:42:39,895 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2019-09-08 11:42:40,351 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:42:40,982 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:42:41,308 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:42:41,867 WARN L188 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-08 11:42:42,555 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-08 11:42:43,105 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-08 11:42:43,570 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-08 11:42:44,126 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-08 11:42:44,486 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:42:44,827 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-08 11:42:45,252 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-08 11:42:46,452 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-08 11:42:46,883 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-08 11:42:47,153 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 11:42:47,831 WARN L188 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 11:42:48,267 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-08 11:42:48,747 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-08 11:42:49,577 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 11:42:50,053 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-08 11:42:50,591 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-09-08 11:42:51,247 WARN L188 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-08 11:42:51,697 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 11:42:51,950 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-08 11:42:52,527 WARN L188 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-08 11:42:52,943 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:42:53,501 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-08 11:42:53,773 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:42:54,696 WARN L188 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-08 11:42:57,863 WARN L188 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:42:58,561 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 11:42:59,230 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:42:59,653 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 11:43:00,664 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-08 11:43:01,033 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-08 11:43:01,604 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 11:43:02,121 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 11:43:02,528 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-08 11:43:02,937 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 11:43:03,429 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:43:03,930 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:43:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:43:04,275 INFO L93 Difference]: Finished difference Result 25966 states and 33583 transitions. [2019-09-08 11:43:04,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2019-09-08 11:43:04,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 115 [2019-09-08 11:43:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:43:04,296 INFO L225 Difference]: With dead ends: 25966 [2019-09-08 11:43:04,296 INFO L226 Difference]: Without dead ends: 21186 [2019-09-08 11:43:04,303 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11578 ImplicationChecksByTransitivity, 78.4s TimeCoverageRelationStatistics Valid=4514, Invalid=26992, Unknown=0, NotChecked=0, Total=31506 [2019-09-08 11:43:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21186 states. [2019-09-08 11:43:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21186 to 10141. [2019-09-08 11:43:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10141 states. [2019-09-08 11:43:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10141 states to 10141 states and 12855 transitions. [2019-09-08 11:43:06,753 INFO L78 Accepts]: Start accepts. Automaton has 10141 states and 12855 transitions. Word has length 115 [2019-09-08 11:43:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:43:06,753 INFO L475 AbstractCegarLoop]: Abstraction has 10141 states and 12855 transitions. [2019-09-08 11:43:06,753 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-08 11:43:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10141 states and 12855 transitions. [2019-09-08 11:43:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 11:43:06,756 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:43:06,756 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:43:06,756 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:43:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:43:06,756 INFO L82 PathProgramCache]: Analyzing trace with hash 989996473, now seen corresponding path program 1 times [2019-09-08 11:43:06,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:43:06,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:43:06,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:06,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:06,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:07,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:43:07,182 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:43:07,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:07,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-08 11:43:07,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:43:07,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:07,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:07,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:08,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:08,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:43:08,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2019-09-08 11:43:08,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-08 11:43:08,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-08 11:43:08,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 11:43:08,590 INFO L87 Difference]: Start difference. First operand 10141 states and 12855 transitions. Second operand 36 states. [2019-09-08 11:43:08,752 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 11:43:12,644 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-08 11:43:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:43:16,198 INFO L93 Difference]: Finished difference Result 24089 states and 30757 transitions. [2019-09-08 11:43:16,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-08 11:43:16,198 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 116 [2019-09-08 11:43:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:43:16,214 INFO L225 Difference]: With dead ends: 24089 [2019-09-08 11:43:16,215 INFO L226 Difference]: Without dead ends: 15979 [2019-09-08 11:43:16,224 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=467, Invalid=3073, Unknown=0, NotChecked=0, Total=3540 [2019-09-08 11:43:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15979 states. [2019-09-08 11:43:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15979 to 10457. [2019-09-08 11:43:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10457 states. [2019-09-08 11:43:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 13174 transitions. [2019-09-08 11:43:18,908 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 13174 transitions. Word has length 116 [2019-09-08 11:43:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:43:18,909 INFO L475 AbstractCegarLoop]: Abstraction has 10457 states and 13174 transitions. [2019-09-08 11:43:18,909 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-08 11:43:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 13174 transitions. [2019-09-08 11:43:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 11:43:18,911 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:43:18,911 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:43:18,912 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:43:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:43:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash -107333172, now seen corresponding path program 1 times [2019-09-08 11:43:18,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:43:18,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:43:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:18,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:18,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:19,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:43:19,229 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:43:19,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:19,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-08 11:43:19,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:43:20,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:20,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:43:20,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37 [2019-09-08 11:43:20,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-08 11:43:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-08 11:43:20,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 11:43:20,631 INFO L87 Difference]: Start difference. First operand 10457 states and 13174 transitions. Second operand 37 states. [2019-09-08 11:43:23,007 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-08 11:43:23,875 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-09-08 11:43:24,120 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 11:43:24,363 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 11:43:24,640 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 11:43:25,045 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 11:43:25,495 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 11:43:27,489 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2019-09-08 11:43:27,803 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-08 11:43:29,022 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 11:43:29,915 WARN L188 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 11:43:30,465 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 11:43:35,414 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-08 11:43:35,682 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-09-08 11:43:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:43:39,570 INFO L93 Difference]: Finished difference Result 21850 states and 27698 transitions. [2019-09-08 11:43:39,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-09-08 11:43:39,570 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 116 [2019-09-08 11:43:39,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:43:39,586 INFO L225 Difference]: With dead ends: 21850 [2019-09-08 11:43:39,587 INFO L226 Difference]: Without dead ends: 19075 [2019-09-08 11:43:39,591 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5878 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2020, Invalid=16070, Unknown=0, NotChecked=0, Total=18090 [2019-09-08 11:43:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19075 states. [2019-09-08 11:43:43,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19075 to 13319. [2019-09-08 11:43:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13319 states. [2019-09-08 11:43:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 16818 transitions. [2019-09-08 11:43:43,050 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 16818 transitions. Word has length 116 [2019-09-08 11:43:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:43:43,050 INFO L475 AbstractCegarLoop]: Abstraction has 13319 states and 16818 transitions. [2019-09-08 11:43:43,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-08 11:43:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 16818 transitions. [2019-09-08 11:43:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 11:43:43,053 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:43:43,053 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:43:43,053 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:43:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:43:43,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1044802570, now seen corresponding path program 1 times [2019-09-08 11:43:43,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:43:43,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:43:43,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:43,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:43,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:44,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:43:44,484 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:43:44,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:44,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-08 11:43:44,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:43:44,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:45,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:45,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:46,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:43:46,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 48 [2019-09-08 11:43:46,132 INFO L454 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-09-08 11:43:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-09-08 11:43:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2120, Unknown=0, NotChecked=0, Total=2256 [2019-09-08 11:43:46,133 INFO L87 Difference]: Start difference. First operand 13319 states and 16818 transitions. Second operand 48 states. [2019-09-08 11:43:46,449 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2019-09-08 11:43:47,711 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2019-09-08 11:43:47,932 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2019-09-08 11:43:48,244 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2019-09-08 11:43:48,568 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-08 11:43:48,810 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2019-09-08 11:43:49,072 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2019-09-08 11:43:49,304 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 11:43:49,549 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-08 11:43:49,833 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 11:43:50,202 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2019-09-08 11:43:50,569 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2019-09-08 11:43:52,511 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-08 11:43:52,779 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2019-09-08 11:43:53,260 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2019-09-08 11:43:53,731 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-09-08 11:43:54,046 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-08 11:43:54,260 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2019-09-08 11:43:54,413 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2019-09-08 11:43:54,764 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 11:43:55,095 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-08 11:43:55,331 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-08 11:43:55,935 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2019-09-08 11:43:56,291 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-08 11:43:56,561 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-08 11:43:56,784 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-08 11:43:57,366 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-08 11:43:58,051 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2019-09-08 11:43:58,406 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-08 11:43:59,009 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2019-09-08 11:43:59,230 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-08 11:44:00,150 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2019-09-08 11:44:01,364 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 11:44:01,696 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-08 11:44:02,309 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-08 11:44:03,408 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-09-08 11:44:03,618 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-09-08 11:44:03,791 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-08 11:44:04,379 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-08 11:44:05,200 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 11:44:05,480 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-08 11:44:05,898 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-08 11:44:06,474 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-09-08 11:44:06,880 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-08 11:44:07,058 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-08 11:44:07,264 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-09-08 11:44:07,822 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-08 11:44:08,027 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-08 11:44:08,247 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-08 11:44:08,727 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:44:08,969 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-08 11:44:09,258 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-08 11:44:09,899 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-08 11:44:10,054 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-09-08 11:44:10,563 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-08 11:44:10,844 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-08 11:44:11,000 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-08 11:44:11,364 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-08 11:44:11,550 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-08 11:44:12,126 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-08 11:44:12,466 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 11:44:13,118 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 11:44:13,726 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-08 11:44:14,609 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 11:44:15,304 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-08 11:44:15,547 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-08 11:44:16,155 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-08 11:44:16,517 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 11:44:17,264 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 11:44:17,521 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-09-08 11:44:18,064 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 11:44:21,386 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2019-09-08 11:44:21,809 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-09-08 11:44:22,123 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-08 11:44:22,669 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-08 11:44:23,043 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2019-09-08 11:44:23,653 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-08 11:44:23,895 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-09-08 11:44:24,323 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-08 11:44:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:44:30,152 INFO L93 Difference]: Finished difference Result 41350 states and 52166 transitions. [2019-09-08 11:44:30,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2019-09-08 11:44:30,152 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 116 [2019-09-08 11:44:30,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:44:30,180 INFO L225 Difference]: With dead ends: 41350 [2019-09-08 11:44:30,180 INFO L226 Difference]: Without dead ends: 31961 [2019-09-08 11:44:30,191 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15300 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=3398, Invalid=41758, Unknown=0, NotChecked=0, Total=45156 [2019-09-08 11:44:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31961 states. [2019-09-08 11:44:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31961 to 19261. [2019-09-08 11:44:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19261 states. [2019-09-08 11:44:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19261 states to 19261 states and 24345 transitions. [2019-09-08 11:44:35,645 INFO L78 Accepts]: Start accepts. Automaton has 19261 states and 24345 transitions. Word has length 116 [2019-09-08 11:44:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:44:35,645 INFO L475 AbstractCegarLoop]: Abstraction has 19261 states and 24345 transitions. [2019-09-08 11:44:35,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-09-08 11:44:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19261 states and 24345 transitions. [2019-09-08 11:44:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 11:44:35,647 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:44:35,648 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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, 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 11:44:35,648 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:44:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:44:35,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1415877822, now seen corresponding path program 1 times [2019-09-08 11:44:35,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:44:35,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:44:35,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:44:35,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:44:35,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:44:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:44:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:44:36,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:44:36,262 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:44:36,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:44:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:44:36,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-08 11:44:36,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:44:36,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:44:36,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:44:37,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:44:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:44:37,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:44:37,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2019-09-08 11:44:37,828 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-08 11:44:37,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-08 11:44:37,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 11:44:37,829 INFO L87 Difference]: Start difference. First operand 19261 states and 24345 transitions. Second operand 39 states. [2019-09-08 11:44:38,000 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-08 11:44:39,219 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 11:44:42,955 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-09-08 11:44:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:44:49,805 INFO L93 Difference]: Finished difference Result 25186 states and 31796 transitions. [2019-09-08 11:44:49,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-09-08 11:44:49,806 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 117 [2019-09-08 11:44:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:44:49,826 INFO L225 Difference]: With dead ends: 25186 [2019-09-08 11:44:49,826 INFO L226 Difference]: Without dead ends: 22211 [2019-09-08 11:44:49,831 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=686, Invalid=5794, Unknown=0, NotChecked=0, Total=6480 [2019-09-08 11:44:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22211 states. [2019-09-08 11:44:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22211 to 19294. [2019-09-08 11:44:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19294 states. [2019-09-08 11:44:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19294 states to 19294 states and 24378 transitions. [2019-09-08 11:44:55,271 INFO L78 Accepts]: Start accepts. Automaton has 19294 states and 24378 transitions. Word has length 117 [2019-09-08 11:44:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:44:55,271 INFO L475 AbstractCegarLoop]: Abstraction has 19294 states and 24378 transitions. [2019-09-08 11:44:55,271 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-08 11:44:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 19294 states and 24378 transitions. [2019-09-08 11:44:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 11:44:55,273 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:44:55,273 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 11:44:55,273 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:44:55,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:44:55,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1050004955, now seen corresponding path program 1 times [2019-09-08 11:44:55,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:44:55,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:44:55,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:44:55,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:44:55,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:44:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:44:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 37 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:44:56,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:44:56,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:44:56,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:44:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:44:56,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-08 11:44:56,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:44:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 11 proven. 71 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 11:44:56,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:44:56,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 7] total 31 [2019-09-08 11:44:56,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 11:44:56,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 11:44:56,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2019-09-08 11:44:56,844 INFO L87 Difference]: Start difference. First operand 19294 states and 24378 transitions. Second operand 31 states. [2019-09-08 11:44:57,055 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 11:44:58,143 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-08 11:44:58,328 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 11:44:58,546 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-08 11:44:58,773 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 11:44:58,937 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-08 11:44:59,116 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-08 11:44:59,297 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-08 11:44:59,520 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 11:45:02,854 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-08 11:45:03,120 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-08 11:45:03,760 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-08 11:45:04,025 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-09-08 11:45:04,219 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 11:45:05,097 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-08 11:45:06,084 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-08 11:45:10,633 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-08 11:45:10,914 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 11:45:11,187 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-09-08 11:45:11,698 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 11:45:12,840 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2019-09-08 11:45:13,088 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-08 11:45:17,284 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 11:45:17,838 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 11:45:18,112 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 11:45:18,315 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-08 11:45:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:21,235 INFO L93 Difference]: Finished difference Result 39746 states and 50107 transitions. [2019-09-08 11:45:21,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-09-08 11:45:21,235 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 117 [2019-09-08 11:45:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:21,260 INFO L225 Difference]: With dead ends: 39746 [2019-09-08 11:45:21,260 INFO L226 Difference]: Without dead ends: 20771 [2019-09-08 11:45:21,272 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4689 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1497, Invalid=14003, Unknown=0, NotChecked=0, Total=15500 [2019-09-08 11:45:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20771 states. [2019-09-08 11:45:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20771 to 20388. [2019-09-08 11:45:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20388 states. [2019-09-08 11:45:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20388 states to 20388 states and 25512 transitions. [2019-09-08 11:45:27,131 INFO L78 Accepts]: Start accepts. Automaton has 20388 states and 25512 transitions. Word has length 117 [2019-09-08 11:45:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:27,132 INFO L475 AbstractCegarLoop]: Abstraction has 20388 states and 25512 transitions. [2019-09-08 11:45:27,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 11:45:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 20388 states and 25512 transitions. [2019-09-08 11:45:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:45:27,133 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:27,133 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2019-09-08 11:45:27,133 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1743371972, now seen corresponding path program 1 times [2019-09-08 11:45:27,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:27,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:27,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:27,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:27,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:28,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:45:28,060 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:45:28,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:28,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 11:45:28,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:45:28,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:45:28,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:45:28,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:45:28,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:45:28,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:45:28,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:45:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:28,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:45:28,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12] total 32 [2019-09-08 11:45:28,650 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-08 11:45:28,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-08 11:45:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2019-09-08 11:45:28,650 INFO L87 Difference]: Start difference. First operand 20388 states and 25512 transitions. Second operand 32 states. [2019-09-08 11:45:28,898 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-09-08 11:45:30,058 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2019-09-08 11:45:30,901 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-08 11:45:32,074 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-09-08 11:45:32,490 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2019-09-08 11:45:33,240 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-09-08 11:45:33,437 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-08 11:45:33,800 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-08 11:45:34,149 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-08 11:45:34,511 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2019-09-08 11:45:35,171 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-09-08 11:45:35,752 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2019-09-08 11:45:36,109 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-08 11:45:36,358 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2019-09-08 11:45:36,769 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-09-08 11:45:37,154 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2019-09-08 11:45:37,365 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2019-09-08 11:45:37,622 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 11:45:37,914 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-08 11:45:38,061 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2019-09-08 11:45:38,345 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 11:45:38,669 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2019-09-08 11:45:38,949 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 11:45:39,199 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2019-09-08 11:45:39,798 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 11:45:40,214 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 11:45:40,550 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-08 11:45:40,787 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2019-09-08 11:45:41,067 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2019-09-08 11:45:41,311 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2019-09-08 11:45:41,500 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-08 11:45:41,787 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2019-09-08 11:45:42,135 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2019-09-08 11:45:42,326 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-09-08 11:45:42,554 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-08 11:45:42,734 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2019-09-08 11:45:43,257 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2019-09-08 11:45:43,602 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2019-09-08 11:45:44,036 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2019-09-08 11:45:44,277 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2019-09-08 11:45:44,877 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-09-08 11:45:45,018 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-08 11:45:45,229 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2019-09-08 11:45:45,645 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-08 11:45:45,967 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2019-09-08 11:45:46,181 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2019-09-08 11:45:46,374 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2019-09-08 11:45:46,566 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2019-09-08 11:45:46,751 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2019-09-08 11:45:47,202 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2019-09-08 11:45:47,602 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2019-09-08 11:45:47,907 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-09-08 11:45:48,140 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-08 11:45:48,496 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2019-09-08 11:45:50,115 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-08 11:45:50,449 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2019-09-08 11:45:50,865 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2019-09-08 11:45:51,196 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 11:45:52,087 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-09-08 11:45:52,523 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-08 11:45:52,907 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2019-09-08 11:45:54,461 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-09-08 11:45:55,309 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-08 11:45:55,587 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-09-08 11:45:56,583 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-08 11:45:56,851 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 11:45:57,935 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-09-08 11:45:58,088 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 11:45:58,532 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-08 11:45:58,865 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2019-09-08 11:45:59,015 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-08 11:45:59,234 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-09-08 11:45:59,414 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-08 11:45:59,704 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-08 11:45:59,920 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-08 11:46:00,752 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-09-08 11:46:00,938 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2019-09-08 11:46:01,324 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2019-09-08 11:46:01,477 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 11:46:02,104 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 11:46:03,721 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 11:46:04,679 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-09-08 11:46:05,187 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2019-09-08 11:46:05,601 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 11:46:06,668 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-09-08 11:46:07,136 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2019-09-08 11:46:08,336 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-08 11:46:11,371 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2019-09-08 11:46:12,175 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-08 11:46:12,569 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-08 11:46:13,271 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 11:46:14,431 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-08 11:46:14,918 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-09-08 11:46:15,857 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2019-09-08 11:46:16,031 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2019-09-08 11:46:16,545 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-08 11:46:16,932 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-09-08 11:46:17,706 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-09-08 11:46:17,883 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-08 11:46:18,788 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-08 11:46:18,939 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 11:46:26,729 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 11:46:28,234 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 11:46:28,555 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:46:29,269 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-08 11:46:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:46:30,806 INFO L93 Difference]: Finished difference Result 59147 states and 74648 transitions. [2019-09-08 11:46:30,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 352 states. [2019-09-08 11:46:30,806 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 118 [2019-09-08 11:46:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:46:30,851 INFO L225 Difference]: With dead ends: 59147 [2019-09-08 11:46:30,851 INFO L226 Difference]: Without dead ends: 42961 [2019-09-08 11:46:30,868 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60263 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=12706, Invalid=129046, Unknown=0, NotChecked=0, Total=141752 [2019-09-08 11:46:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42961 states. [2019-09-08 11:46:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42961 to 26322. [2019-09-08 11:46:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26322 states. [2019-09-08 11:46:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26322 states to 26322 states and 32997 transitions. [2019-09-08 11:46:38,928 INFO L78 Accepts]: Start accepts. Automaton has 26322 states and 32997 transitions. Word has length 118 [2019-09-08 11:46:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:46:38,928 INFO L475 AbstractCegarLoop]: Abstraction has 26322 states and 32997 transitions. [2019-09-08 11:46:38,928 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-08 11:46:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 26322 states and 32997 transitions. [2019-09-08 11:46:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:46:38,930 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:46:38,930 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2019-09-08 11:46:38,930 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:46:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:46:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1516554642, now seen corresponding path program 1 times [2019-09-08 11:46:38,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:46:38,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:46:38,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:46:38,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:46:38,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:46:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:46:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 11:46:39,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:46:39,226 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:46:39,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:46:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:46:39,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 11:46:39,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:46:39,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:39,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:39,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:41,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:41,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:41,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:41,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 11:46:46,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:46:46,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2019-09-08 11:46:46,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 11:46:46,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 11:46:46,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=253, Unknown=3, NotChecked=0, Total=306 [2019-09-08 11:46:46,275 INFO L87 Difference]: Start difference. First operand 26322 states and 32997 transitions. Second operand 18 states. [2019-09-08 11:46:54,639 WARN L188 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2019-09-08 11:46:55,635 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2019-09-08 11:47:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:47:08,168 INFO L93 Difference]: Finished difference Result 57881 states and 73864 transitions. [2019-09-08 11:47:08,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 11:47:08,169 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2019-09-08 11:47:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:47:08,210 INFO L225 Difference]: With dead ends: 57881 [2019-09-08 11:47:08,210 INFO L226 Difference]: Without dead ends: 37964 [2019-09-08 11:47:08,228 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=149, Invalid=658, Unknown=5, NotChecked=0, Total=812 [2019-09-08 11:47:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37964 states. [2019-09-08 11:47:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37964 to 27457. [2019-09-08 11:47:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27457 states. [2019-09-08 11:47:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27457 states to 27457 states and 34527 transitions. [2019-09-08 11:47:17,489 INFO L78 Accepts]: Start accepts. Automaton has 27457 states and 34527 transitions. Word has length 118 [2019-09-08 11:47:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:47:17,489 INFO L475 AbstractCegarLoop]: Abstraction has 27457 states and 34527 transitions. [2019-09-08 11:47:17,489 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 11:47:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 27457 states and 34527 transitions. [2019-09-08 11:47:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:47:17,491 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:47:17,491 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2019-09-08 11:47:17,491 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:47:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:47:17,491 INFO L82 PathProgramCache]: Analyzing trace with hash -990906731, now seen corresponding path program 1 times [2019-09-08 11:47:17,492 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:47:17,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:47:17,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:47:17,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:47:17,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:47:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:47:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:47:17,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:47:17,779 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:47:17,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:47:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:47:17,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 11:47:17,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:47:17,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:17,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:18,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:18,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:18,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:18,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:47:18,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:47:18,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2019-09-08 11:47:18,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 11:47:18,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 11:47:18,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2019-09-08 11:47:18,230 INFO L87 Difference]: Start difference. First operand 27457 states and 34527 transitions. Second operand 25 states. [2019-09-08 11:47:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:47:36,336 INFO L93 Difference]: Finished difference Result 65633 states and 83032 transitions. [2019-09-08 11:47:36,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-08 11:47:36,336 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 118 [2019-09-08 11:47:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:47:36,376 INFO L225 Difference]: With dead ends: 65633 [2019-09-08 11:47:36,376 INFO L226 Difference]: Without dead ends: 44377 [2019-09-08 11:47:36,391 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=642, Invalid=3264, Unknown=0, NotChecked=0, Total=3906 [2019-09-08 11:47:36,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44377 states. [2019-09-08 11:47:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44377 to 33949. [2019-09-08 11:47:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33949 states. [2019-09-08 11:47:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33949 states to 33949 states and 42744 transitions. [2019-09-08 11:47:47,956 INFO L78 Accepts]: Start accepts. Automaton has 33949 states and 42744 transitions. Word has length 118 [2019-09-08 11:47:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:47:47,957 INFO L475 AbstractCegarLoop]: Abstraction has 33949 states and 42744 transitions. [2019-09-08 11:47:47,957 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-08 11:47:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 33949 states and 42744 transitions. [2019-09-08 11:47:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-08 11:47:47,958 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:47:47,958 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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, 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 11:47:47,958 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:47:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:47:47,958 INFO L82 PathProgramCache]: Analyzing trace with hash -577757954, now seen corresponding path program 1 times [2019-09-08 11:47:47,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:47:47,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:47:47,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:47:47,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:47:47,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:47:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:47:48,844 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 11:47:48,969 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-08 11:47:49,098 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-08 11:47:51,417 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 11:47:51,714 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 11:47:51,894 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 11:47:52,224 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-08 11:47:52,435 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-08 11:47:53,393 WARN L188 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 11:47:53,637 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-08 11:47:53,797 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-08 11:47:54,326 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 11:47:54,665 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2019-09-08 11:47:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:47:55,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:47:55,490 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:47:55,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:47:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:47:55,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-08 11:47:55,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:47:58,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 20 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:47:59,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:47:59,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 62 [2019-09-08 11:47:59,959 INFO L454 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-09-08 11:47:59,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-09-08 11:47:59,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3571, Unknown=1, NotChecked=0, Total=3782 [2019-09-08 11:47:59,960 INFO L87 Difference]: Start difference. First operand 33949 states and 42744 transitions. Second operand 62 states. [2019-09-08 11:48:00,673 WARN L188 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 120 [2019-09-08 11:48:02,596 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 25 [2019-09-08 11:48:02,889 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 29 [2019-09-08 11:48:03,302 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 31 [2019-09-08 11:48:03,637 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 34 [2019-09-08 11:48:04,293 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 36 [2019-09-08 11:48:04,773 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 39 [2019-09-08 11:48:06,383 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 35 [2019-09-08 11:48:07,600 WARN L188 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 65 [2019-09-08 11:48:08,239 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 32 [2019-09-08 11:48:09,049 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 44 [2019-09-08 11:48:09,536 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 48 [2019-09-08 11:48:10,576 WARN L188 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 78 [2019-09-08 11:48:12,606 WARN L188 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 78 [2019-09-08 11:48:13,537 WARN L188 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 78 [2019-09-08 11:48:14,160 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2019-09-08 11:48:14,984 WARN L188 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 79 [2019-09-08 11:48:15,910 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 83 [2019-09-08 11:48:16,673 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 43 [2019-09-08 11:48:17,045 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 48 [2019-09-08 11:48:17,717 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 31 [2019-09-08 11:48:18,558 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2019-09-08 11:48:20,222 WARN L188 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 73 [2019-09-08 11:48:20,496 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 32 [2019-09-08 11:48:20,858 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 36 [2019-09-08 11:48:21,596 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2019-09-08 11:48:23,114 WARN L188 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 76 [2019-09-08 11:48:23,837 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2019-09-08 11:48:25,426 WARN L188 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 78 [2019-09-08 11:48:26,007 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2019-09-08 11:48:26,376 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 38 [2019-09-08 11:48:29,222 WARN L188 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 216 DAG size of output: 77 [2019-09-08 11:48:29,671 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 41 [2019-09-08 11:48:31,940 WARN L188 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 236 DAG size of output: 81 [2019-09-08 11:48:33,726 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 271 DAG size of output: 87 [2019-09-08 11:48:34,106 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2019-09-08 11:48:37,738 WARN L188 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 214 DAG size of output: 90 [2019-09-08 11:48:39,509 WARN L188 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 59 [2019-09-08 11:48:40,608 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 50 [2019-09-08 11:48:41,141 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2019-09-08 11:48:41,931 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 50 [2019-09-08 11:48:42,580 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 57 [2019-09-08 11:48:43,120 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 57 [2019-09-08 11:48:43,642 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2019-09-08 11:48:44,851 WARN L188 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2019-09-08 11:48:48,218 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 65 [2019-09-08 11:48:49,247 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 54 [2019-09-08 11:48:49,819 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 45 [2019-09-08 11:48:51,130 WARN L188 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 63 [2019-09-08 11:48:52,546 WARN L188 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 66 [2019-09-08 11:48:53,211 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 54 [2019-09-08 11:48:53,836 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 57 [2019-09-08 11:48:54,674 WARN L188 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 63 [2019-09-08 11:48:56,029 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 53 [2019-09-08 11:48:56,956 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 53 [2019-09-08 11:48:57,462 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 58 [2019-09-08 11:48:57,988 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 44 [2019-09-08 11:48:58,904 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 47 [2019-09-08 11:48:59,456 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2019-09-08 11:49:00,046 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2019-09-08 11:49:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:49:15,990 INFO L93 Difference]: Finished difference Result 60235 states and 75471 transitions. [2019-09-08 11:49:15,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-09-08 11:49:15,990 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 119 [2019-09-08 11:49:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:49:16,034 INFO L225 Difference]: With dead ends: 60235 [2019-09-08 11:49:16,034 INFO L226 Difference]: Without dead ends: 47413 [2019-09-08 11:49:16,048 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4230 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=2189, Invalid=16441, Unknown=2, NotChecked=0, Total=18632 [2019-09-08 11:49:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47413 states. [2019-09-08 11:49:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47413 to 32174. [2019-09-08 11:49:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32174 states. [2019-09-08 11:49:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32174 states to 32174 states and 40604 transitions. [2019-09-08 11:49:27,283 INFO L78 Accepts]: Start accepts. Automaton has 32174 states and 40604 transitions. Word has length 119 [2019-09-08 11:49:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:49:27,283 INFO L475 AbstractCegarLoop]: Abstraction has 32174 states and 40604 transitions. [2019-09-08 11:49:27,283 INFO L476 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-09-08 11:49:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 32174 states and 40604 transitions. [2019-09-08 11:49:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-08 11:49:27,285 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:49:27,285 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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, 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 11:49:27,285 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:49:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:49:27,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1631649012, now seen corresponding path program 1 times [2019-09-08 11:49:27,285 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:49:27,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:49:27,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:49:27,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:49:27,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:49:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:49:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:49:28,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:49:28,938 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:49:28,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:49:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:49:29,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-08 11:49:29,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:49:30,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:49:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:49:30,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:49:30,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 47 [2019-09-08 11:49:30,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-09-08 11:49:30,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-09-08 11:49:30,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1987, Unknown=0, NotChecked=0, Total=2162 [2019-09-08 11:49:30,883 INFO L87 Difference]: Start difference. First operand 32174 states and 40604 transitions. Second operand 47 states. [2019-09-08 11:49:31,343 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 82 [2019-09-08 11:49:32,599 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2019-09-08 11:49:32,861 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 43 [2019-09-08 11:49:33,190 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 47 [2019-09-08 11:49:33,937 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2019-09-08 11:49:34,315 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2019-09-08 11:49:34,504 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-08 11:49:34,678 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2019-09-08 11:49:34,916 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-08 11:49:35,120 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2019-09-08 11:49:38,671 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 33 [2019-09-08 11:49:39,018 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 35 [2019-09-08 11:49:41,632 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-08 11:49:41,849 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2019-09-08 11:49:42,446 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2019-09-08 11:49:43,377 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2019-09-08 11:49:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:49:56,449 INFO L93 Difference]: Finished difference Result 49198 states and 62550 transitions. [2019-09-08 11:49:56,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-09-08 11:49:56,450 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 119 [2019-09-08 11:49:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:49:56,484 INFO L225 Difference]: With dead ends: 49198 [2019-09-08 11:49:56,484 INFO L226 Difference]: Without dead ends: 34278 [2019-09-08 11:49:56,498 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=1881, Invalid=13619, Unknown=0, NotChecked=0, Total=15500 [2019-09-08 11:49:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34278 states. [2019-09-08 11:50:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34278 to 31154. [2019-09-08 11:50:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31154 states. [2019-09-08 11:50:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31154 states to 31154 states and 39375 transitions. [2019-09-08 11:50:06,757 INFO L78 Accepts]: Start accepts. Automaton has 31154 states and 39375 transitions. Word has length 119 [2019-09-08 11:50:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:50:06,757 INFO L475 AbstractCegarLoop]: Abstraction has 31154 states and 39375 transitions. [2019-09-08 11:50:06,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-09-08 11:50:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 31154 states and 39375 transitions. [2019-09-08 11:50:06,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-09-08 11:50:06,759 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:50:06,760 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:50:06,760 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:50:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:50:06,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1330028100, now seen corresponding path program 1 times [2019-09-08 11:50:06,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:50:06,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:50:06,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:50:06,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:50:06,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:50:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:50:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 32 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:50:07,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:50:07,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:50:07,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:50:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:50:07,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-08 11:50:07,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:50:07,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:50:07,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:50:07,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:50:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 98 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 11:50:08,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:50:08,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 33 [2019-09-08 11:50:08,189 INFO L454 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-09-08 11:50:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-09-08 11:50:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 11:50:08,189 INFO L87 Difference]: Start difference. First operand 31154 states and 39375 transitions. Second operand 33 states. [2019-09-08 11:50:09,962 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 11:50:10,271 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-08 11:50:10,480 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 11:50:10,740 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-08 11:50:10,927 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-08 11:50:11,257 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 11:50:11,731 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-08 11:50:12,068 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2019-09-08 11:50:12,400 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-08 11:50:12,637 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 11:50:13,011 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-09-08 11:50:13,166 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 11:50:13,391 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-08 11:50:13,760 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2019-09-08 11:50:13,950 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-08 11:50:14,209 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2019-09-08 11:50:14,383 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2019-09-08 11:50:14,550 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2019-09-08 11:50:14,810 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2019-09-08 11:50:14,959 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:50:15,144 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-08 11:50:15,308 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-08 11:50:15,523 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2019-09-08 11:50:15,706 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-08 11:50:15,886 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2019-09-08 11:50:16,079 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-08 11:50:16,292 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 11:50:16,545 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2019-09-08 11:50:16,727 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 11:50:16,914 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-08 11:50:17,148 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2019-09-08 11:50:17,323 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-09-08 11:50:17,494 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 11:50:17,672 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-08 11:50:17,875 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2019-09-08 11:50:18,182 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2019-09-08 11:50:18,356 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 11:50:18,551 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-08 11:50:18,755 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2019-09-08 11:50:19,026 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2019-09-08 11:50:19,231 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-08 11:50:19,440 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48