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/pals_lcr.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:48:02,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:48:02,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:48:02,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:48:02,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:48:02,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:48:02,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:48:02,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:48:02,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:48:02,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:48:02,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:48:02,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:48:02,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:48:02,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:48:02,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:48:02,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:48:02,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:48:02,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:48:02,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:48:02,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:48:02,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:48:02,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:48:02,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:48:02,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:48:02,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:48:02,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:48:02,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:48:02,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:48:02,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:48:02,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:48:02,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:48:02,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:48:02,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:48:02,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:48:02,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:48:02,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:48:02,752 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 07:48:02,774 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:48:02,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:48:02,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:48:02,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:48:02,778 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:48:02,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:48:02,778 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:48:02,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:48:02,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:48:02,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:48:02,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:48:02,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:48:02,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:48:02,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:48:02,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:48:02,782 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:48:02,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:48:02,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:48:02,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:48:02,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:48:02,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:48:02,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:48:02,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:48:02,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:48:02,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:48:02,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:48:02,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:48:02,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:48:02,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:48:02,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:48:02,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:48:02,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:48:02,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:48:02,868 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:48:02,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2019-09-08 07:48:02,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adeac02a/99904707d1d64d8e970decd4d43f5a79/FLAG6be44dc00 [2019-09-08 07:48:03,432 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:48:03,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2019-09-08 07:48:03,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adeac02a/99904707d1d64d8e970decd4d43f5a79/FLAG6be44dc00 [2019-09-08 07:48:03,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adeac02a/99904707d1d64d8e970decd4d43f5a79 [2019-09-08 07:48:03,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:48:03,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:48:03,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:48:03,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:48:03,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:48:03,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:48:03" (1/1) ... [2019-09-08 07:48:03,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e791905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:03, skipping insertion in model container [2019-09-08 07:48:03,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:48:03" (1/1) ... [2019-09-08 07:48:03,767 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:48:03,804 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:48:04,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:48:04,045 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:48:04,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:48:04,216 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:48:04,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04 WrapperNode [2019-09-08 07:48:04,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:48:04,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:48:04,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:48:04,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:48:04,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (1/1) ... [2019-09-08 07:48:04,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:48:04,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:48:04,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:48:04,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:48:04,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (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 07:48:04,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:48:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:48:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:48:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:48:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:48:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:48:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:48:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:48:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:48:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:48:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:48:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:48:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 07:48:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:48:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:48:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:48:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:48:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:48:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:48:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:48:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:48:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:48:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:48:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:48:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:48:04,825 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:48:04,826 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:48:04,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:48:04 BoogieIcfgContainer [2019-09-08 07:48:04,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:48:04,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:48:04,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:48:04,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:48:04,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:48:03" (1/3) ... [2019-09-08 07:48:04,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e0b761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:48:04, skipping insertion in model container [2019-09-08 07:48:04,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:48:04" (2/3) ... [2019-09-08 07:48:04,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e0b761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:48:04, skipping insertion in model container [2019-09-08 07:48:04,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:48:04" (3/3) ... [2019-09-08 07:48:04,836 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2019-09-08 07:48:04,846 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:48:04,853 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:48:04,870 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:48:04,904 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:48:04,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:48:04,905 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:48:04,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:48:04,905 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:48:04,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:48:04,906 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:48:04,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:48:04,906 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:48:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2019-09-08 07:48:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 07:48:04,935 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:04,936 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:04,939 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 892256237, now seen corresponding path program 1 times [2019-09-08 07:48:04,946 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:04,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:05,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:05,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:05,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:05,291 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 07:48:05,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:05,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:48:05,300 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:48:05,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:48:05,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:48:05,318 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 5 states. [2019-09-08 07:48:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:05,439 INFO L93 Difference]: Finished difference Result 147 states and 211 transitions. [2019-09-08 07:48:05,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:48:05,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-08 07:48:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:05,458 INFO L225 Difference]: With dead ends: 147 [2019-09-08 07:48:05,458 INFO L226 Difference]: Without dead ends: 83 [2019-09-08 07:48:05,467 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 07:48:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-09-08 07:48:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-09-08 07:48:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-09-08 07:48:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2019-09-08 07:48:05,517 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 47 [2019-09-08 07:48:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:05,518 INFO L475 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2019-09-08 07:48:05,518 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:48:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2019-09-08 07:48:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-08 07:48:05,521 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:05,521 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:05,521 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash 330309822, now seen corresponding path program 1 times [2019-09-08 07:48:05,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:05,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:05,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:05,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:05,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:05,876 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 07:48:05,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:05,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:48:05,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:48:05,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:48:05,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:48:05,883 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand 9 states. [2019-09-08 07:48:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:07,675 INFO L93 Difference]: Finished difference Result 466 states and 661 transitions. [2019-09-08 07:48:07,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-08 07:48:07,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-09-08 07:48:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:07,699 INFO L225 Difference]: With dead ends: 466 [2019-09-08 07:48:07,700 INFO L226 Difference]: Without dead ends: 411 [2019-09-08 07:48:07,705 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:48:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2019-09-08 07:48:07,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 254. [2019-09-08 07:48:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2019-09-08 07:48:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 344 transitions. [2019-09-08 07:48:07,789 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 344 transitions. Word has length 62 [2019-09-08 07:48:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:07,790 INFO L475 AbstractCegarLoop]: Abstraction has 254 states and 344 transitions. [2019-09-08 07:48:07,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:48:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 344 transitions. [2019-09-08 07:48:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:48:07,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:07,794 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:07,795 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:07,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:07,795 INFO L82 PathProgramCache]: Analyzing trace with hash 186230734, now seen corresponding path program 1 times [2019-09-08 07:48:07,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:07,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:07,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:07,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:07,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:07,910 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 07:48:07,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:07,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 07:48:07,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 07:48:07,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 07:48:07,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 07:48:07,912 INFO L87 Difference]: Start difference. First operand 254 states and 344 transitions. Second operand 3 states. [2019-09-08 07:48:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:07,961 INFO L93 Difference]: Finished difference Result 679 states and 947 transitions. [2019-09-08 07:48:07,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 07:48:07,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-09-08 07:48:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:07,967 INFO L225 Difference]: With dead ends: 679 [2019-09-08 07:48:07,967 INFO L226 Difference]: Without dead ends: 453 [2019-09-08 07:48:07,970 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 07:48:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-09-08 07:48:08,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2019-09-08 07:48:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-09-08 07:48:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 602 transitions. [2019-09-08 07:48:08,019 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 602 transitions. Word has length 64 [2019-09-08 07:48:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:08,020 INFO L475 AbstractCegarLoop]: Abstraction has 443 states and 602 transitions. [2019-09-08 07:48:08,020 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 07:48:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 602 transitions. [2019-09-08 07:48:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:48:08,023 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:08,024 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:08,024 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1101471722, now seen corresponding path program 1 times [2019-09-08 07:48:08,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:08,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:08,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:08,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:08,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:08,192 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 07:48:08,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:08,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:48:08,193 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:48:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:48:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:48:08,194 INFO L87 Difference]: Start difference. First operand 443 states and 602 transitions. Second operand 5 states. [2019-09-08 07:48:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:08,560 INFO L93 Difference]: Finished difference Result 1213 states and 1678 transitions. [2019-09-08 07:48:08,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:48:08,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:48:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:08,573 INFO L225 Difference]: With dead ends: 1213 [2019-09-08 07:48:08,573 INFO L226 Difference]: Without dead ends: 798 [2019-09-08 07:48:08,576 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:48:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-09-08 07:48:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 796. [2019-09-08 07:48:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-09-08 07:48:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1081 transitions. [2019-09-08 07:48:08,648 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1081 transitions. Word has length 64 [2019-09-08 07:48:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:08,648 INFO L475 AbstractCegarLoop]: Abstraction has 796 states and 1081 transitions. [2019-09-08 07:48:08,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:48:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1081 transitions. [2019-09-08 07:48:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:48:08,652 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:08,652 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:08,652 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:08,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1555267424, now seen corresponding path program 1 times [2019-09-08 07:48:08,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:08,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:08,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:08,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:08,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:08,763 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 07:48:08,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:08,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:48:08,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:48:08,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:48:08,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:48:08,765 INFO L87 Difference]: Start difference. First operand 796 states and 1081 transitions. Second operand 5 states. [2019-09-08 07:48:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:09,165 INFO L93 Difference]: Finished difference Result 2224 states and 3051 transitions. [2019-09-08 07:48:09,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:48:09,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:48:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:09,178 INFO L225 Difference]: With dead ends: 2224 [2019-09-08 07:48:09,178 INFO L226 Difference]: Without dead ends: 1456 [2019-09-08 07:48:09,181 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:48:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2019-09-08 07:48:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1454. [2019-09-08 07:48:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2019-09-08 07:48:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1957 transitions. [2019-09-08 07:48:09,288 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1957 transitions. Word has length 64 [2019-09-08 07:48:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:09,289 INFO L475 AbstractCegarLoop]: Abstraction has 1454 states and 1957 transitions. [2019-09-08 07:48:09,289 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:48:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1957 transitions. [2019-09-08 07:48:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:48:09,294 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:09,295 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:09,295 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1543954602, now seen corresponding path program 1 times [2019-09-08 07:48:09,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:09,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:09,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:09,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:09,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:09,537 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 07:48:09,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:09,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:48:09,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:48:09,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:48:09,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:48:09,540 INFO L87 Difference]: Start difference. First operand 1454 states and 1957 transitions. Second operand 9 states. [2019-09-08 07:48:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:10,960 INFO L93 Difference]: Finished difference Result 3046 states and 4201 transitions. [2019-09-08 07:48:10,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 07:48:10,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-09-08 07:48:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:10,975 INFO L225 Difference]: With dead ends: 3046 [2019-09-08 07:48:10,976 INFO L226 Difference]: Without dead ends: 1620 [2019-09-08 07:48:10,982 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:48:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2019-09-08 07:48:11,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1450. [2019-09-08 07:48:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2019-09-08 07:48:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1941 transitions. [2019-09-08 07:48:11,101 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1941 transitions. Word has length 64 [2019-09-08 07:48:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:11,103 INFO L475 AbstractCegarLoop]: Abstraction has 1450 states and 1941 transitions. [2019-09-08 07:48:11,103 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:48:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1941 transitions. [2019-09-08 07:48:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 07:48:11,108 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:11,109 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:11,109 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:11,116 INFO L82 PathProgramCache]: Analyzing trace with hash -686575773, now seen corresponding path program 1 times [2019-09-08 07:48:11,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:11,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:11,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:11,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:11,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:11,256 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 07:48:11,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:11,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:48:11,258 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:48:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:48:11,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:48:11,259 INFO L87 Difference]: Start difference. First operand 1450 states and 1941 transitions. Second operand 5 states. [2019-09-08 07:48:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:11,792 INFO L93 Difference]: Finished difference Result 3474 states and 4686 transitions. [2019-09-08 07:48:11,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:48:11,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-09-08 07:48:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:11,806 INFO L225 Difference]: With dead ends: 3474 [2019-09-08 07:48:11,806 INFO L226 Difference]: Without dead ends: 2052 [2019-09-08 07:48:11,811 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:48:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2019-09-08 07:48:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1988. [2019-09-08 07:48:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2019-09-08 07:48:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2627 transitions. [2019-09-08 07:48:11,936 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2627 transitions. Word has length 65 [2019-09-08 07:48:11,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:11,936 INFO L475 AbstractCegarLoop]: Abstraction has 1988 states and 2627 transitions. [2019-09-08 07:48:11,937 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:48:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2627 transitions. [2019-09-08 07:48:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 07:48:11,938 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:11,938 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:11,938 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:11,939 INFO L82 PathProgramCache]: Analyzing trace with hash 960849188, now seen corresponding path program 1 times [2019-09-08 07:48:11,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:11,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:11,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:11,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:11,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:12,051 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 07:48:12,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:12,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:48:12,053 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:48:12,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:48:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:48:12,054 INFO L87 Difference]: Start difference. First operand 1988 states and 2627 transitions. Second operand 8 states. [2019-09-08 07:48:12,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:12,261 INFO L93 Difference]: Finished difference Result 2455 states and 3407 transitions. [2019-09-08 07:48:12,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:48:12,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-09-08 07:48:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:12,280 INFO L225 Difference]: With dead ends: 2455 [2019-09-08 07:48:12,281 INFO L226 Difference]: Without dead ends: 2453 [2019-09-08 07:48:12,283 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:48:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2019-09-08 07:48:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2204. [2019-09-08 07:48:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2204 states. [2019-09-08 07:48:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2847 transitions. [2019-09-08 07:48:12,481 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2847 transitions. Word has length 65 [2019-09-08 07:48:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:12,482 INFO L475 AbstractCegarLoop]: Abstraction has 2204 states and 2847 transitions. [2019-09-08 07:48:12,482 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:48:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2847 transitions. [2019-09-08 07:48:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 07:48:12,483 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:12,483 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:12,483 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash -820910131, now seen corresponding path program 1 times [2019-09-08 07:48:12,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:12,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:12,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:12,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:12,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:12,577 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 07:48:12,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:12,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:48:12,578 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:48:12,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:48:12,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:48:12,579 INFO L87 Difference]: Start difference. First operand 2204 states and 2847 transitions. Second operand 9 states. [2019-09-08 07:48:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:13,218 INFO L93 Difference]: Finished difference Result 4201 states and 5478 transitions. [2019-09-08 07:48:13,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:48:13,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2019-09-08 07:48:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:13,236 INFO L225 Difference]: With dead ends: 4201 [2019-09-08 07:48:13,236 INFO L226 Difference]: Without dead ends: 2567 [2019-09-08 07:48:13,242 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:48:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2019-09-08 07:48:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2229. [2019-09-08 07:48:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2229 states. [2019-09-08 07:48:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2879 transitions. [2019-09-08 07:48:13,497 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2879 transitions. Word has length 66 [2019-09-08 07:48:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:13,498 INFO L475 AbstractCegarLoop]: Abstraction has 2229 states and 2879 transitions. [2019-09-08 07:48:13,498 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:48:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2879 transitions. [2019-09-08 07:48:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 07:48:13,499 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:13,500 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:13,500 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:13,501 INFO L82 PathProgramCache]: Analyzing trace with hash 230247710, now seen corresponding path program 1 times [2019-09-08 07:48:13,501 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:13,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:13,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:13,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:13,600 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 07:48:13,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:48:13,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:48:13,602 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:48:13,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:48:13,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:48:13,603 INFO L87 Difference]: Start difference. First operand 2229 states and 2879 transitions. Second operand 5 states. [2019-09-08 07:48:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:14,243 INFO L93 Difference]: Finished difference Result 4879 states and 6346 transitions. [2019-09-08 07:48:14,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:48:14,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-09-08 07:48:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:14,270 INFO L225 Difference]: With dead ends: 4879 [2019-09-08 07:48:14,270 INFO L226 Difference]: Without dead ends: 3241 [2019-09-08 07:48:14,279 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:48:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2019-09-08 07:48:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 3236. [2019-09-08 07:48:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3236 states. [2019-09-08 07:48:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 4102 transitions. [2019-09-08 07:48:14,538 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 4102 transitions. Word has length 67 [2019-09-08 07:48:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:14,539 INFO L475 AbstractCegarLoop]: Abstraction has 3236 states and 4102 transitions. [2019-09-08 07:48:14,539 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:48:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 4102 transitions. [2019-09-08 07:48:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 07:48:14,542 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:14,543 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:14,543 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:14,543 INFO L82 PathProgramCache]: Analyzing trace with hash -761746416, now seen corresponding path program 1 times [2019-09-08 07:48:14,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:14,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:14,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:14,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:14,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:48:14,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:14,670 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 07:48:14,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:14,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:48:14,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-08 07:48:15,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:48:15,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-08 07:48:15,008 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 07:48:15,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 07:48:15,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-08 07:48:15,010 INFO L87 Difference]: Start difference. First operand 3236 states and 4102 transitions. Second operand 10 states. [2019-09-08 07:48:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:16,659 INFO L93 Difference]: Finished difference Result 5911 states and 7507 transitions. [2019-09-08 07:48:16,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 07:48:16,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-09-08 07:48:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:16,676 INFO L225 Difference]: With dead ends: 5911 [2019-09-08 07:48:16,676 INFO L226 Difference]: Without dead ends: 2725 [2019-09-08 07:48:16,686 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:48:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2019-09-08 07:48:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2531. [2019-09-08 07:48:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2019-09-08 07:48:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3135 transitions. [2019-09-08 07:48:16,989 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3135 transitions. Word has length 102 [2019-09-08 07:48:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:16,990 INFO L475 AbstractCegarLoop]: Abstraction has 2531 states and 3135 transitions. [2019-09-08 07:48:16,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 07:48:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3135 transitions. [2019-09-08 07:48:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 07:48:16,995 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:16,997 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:16,997 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash 739510017, now seen corresponding path program 1 times [2019-09-08 07:48:16,998 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:16,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:17,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:17,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:17,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:48:17,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:17,280 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:48:17,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:17,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:48:17,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:48:17,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:48:17,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2019-09-08 07:48:17,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 07:48:17,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 07:48:17,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2019-09-08 07:48:17,634 INFO L87 Difference]: Start difference. First operand 2531 states and 3135 transitions. Second operand 17 states. [2019-09-08 07:48:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:21,274 INFO L93 Difference]: Finished difference Result 6702 states and 8909 transitions. [2019-09-08 07:48:21,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 07:48:21,275 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2019-09-08 07:48:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:21,322 INFO L225 Difference]: With dead ends: 6702 [2019-09-08 07:48:21,323 INFO L226 Difference]: Without dead ends: 5398 [2019-09-08 07:48:21,331 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2019-09-08 07:48:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2019-09-08 07:48:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 4978. [2019-09-08 07:48:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4978 states. [2019-09-08 07:48:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 6344 transitions. [2019-09-08 07:48:21,912 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 6344 transitions. Word has length 104 [2019-09-08 07:48:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:21,912 INFO L475 AbstractCegarLoop]: Abstraction has 4978 states and 6344 transitions. [2019-09-08 07:48:21,913 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 07:48:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 6344 transitions. [2019-09-08 07:48:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 07:48:21,919 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:21,920 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:21,920 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:21,920 INFO L82 PathProgramCache]: Analyzing trace with hash 20974389, now seen corresponding path program 1 times [2019-09-08 07:48:21,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:21,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:21,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:21,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:21,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 07:48:22,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:22,198 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 07:48:22,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:22,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:48:22,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:48:22,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:48:22,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2019-09-08 07:48:22,564 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 07:48:22,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 07:48:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-09-08 07:48:22,566 INFO L87 Difference]: Start difference. First operand 4978 states and 6344 transitions. Second operand 20 states. [2019-09-08 07:48:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:26,581 INFO L93 Difference]: Finished difference Result 10649 states and 13886 transitions. [2019-09-08 07:48:26,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:48:26,582 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2019-09-08 07:48:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:26,639 INFO L225 Difference]: With dead ends: 10649 [2019-09-08 07:48:26,639 INFO L226 Difference]: Without dead ends: 8801 [2019-09-08 07:48:26,650 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=429, Invalid=1923, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:48:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8801 states. [2019-09-08 07:48:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8801 to 7725. [2019-09-08 07:48:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7725 states. [2019-09-08 07:48:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7725 states to 7725 states and 9844 transitions. [2019-09-08 07:48:27,328 INFO L78 Accepts]: Start accepts. Automaton has 7725 states and 9844 transitions. Word has length 104 [2019-09-08 07:48:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:27,329 INFO L475 AbstractCegarLoop]: Abstraction has 7725 states and 9844 transitions. [2019-09-08 07:48:27,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 07:48:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7725 states and 9844 transitions. [2019-09-08 07:48:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:48:27,332 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:27,332 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:27,333 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1532836170, now seen corresponding path program 1 times [2019-09-08 07:48:27,334 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:27,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:27,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:48:27,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:27,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:48:27,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:48:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:27,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:48:27,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:48:28,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:48:28,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2019-09-08 07:48:28,109 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 07:48:28,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 07:48:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2019-09-08 07:48:28,109 INFO L87 Difference]: Start difference. First operand 7725 states and 9844 transitions. Second operand 23 states. [2019-09-08 07:48:30,988 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-08 07:48:36,533 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-09-08 07:48:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:38,485 INFO L93 Difference]: Finished difference Result 34037 states and 43286 transitions. [2019-09-08 07:48:38,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-09-08 07:48:38,486 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 105 [2019-09-08 07:48:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:38,595 INFO L225 Difference]: With dead ends: 34037 [2019-09-08 07:48:38,595 INFO L226 Difference]: Without dead ends: 26383 [2019-09-08 07:48:38,638 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5787 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2400, Invalid=13856, Unknown=0, NotChecked=0, Total=16256 [2019-09-08 07:48:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26383 states. [2019-09-08 07:48:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26383 to 23838. [2019-09-08 07:48:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23838 states. [2019-09-08 07:48:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23838 states to 23838 states and 30066 transitions. [2019-09-08 07:48:40,949 INFO L78 Accepts]: Start accepts. Automaton has 23838 states and 30066 transitions. Word has length 105 [2019-09-08 07:48:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:40,950 INFO L475 AbstractCegarLoop]: Abstraction has 23838 states and 30066 transitions. [2019-09-08 07:48:40,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-08 07:48:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23838 states and 30066 transitions. [2019-09-08 07:48:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:48:40,955 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:40,955 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:40,956 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2020079411, now seen corresponding path program 1 times [2019-09-08 07:48:40,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:40,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:40,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:40,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:40,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:48:41,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:41,327 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 07:48:41,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:41,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 07:48:41,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:41,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:48:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:48:42,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:48:42,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2019-09-08 07:48:42,822 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 07:48:42,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 07:48:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2019-09-08 07:48:42,823 INFO L87 Difference]: Start difference. First operand 23838 states and 30066 transitions. Second operand 31 states. [2019-09-08 07:48:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:51,040 INFO L93 Difference]: Finished difference Result 88433 states and 112331 transitions. [2019-09-08 07:48:51,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-08 07:48:51,041 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 106 [2019-09-08 07:48:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:51,466 INFO L225 Difference]: With dead ends: 88433 [2019-09-08 07:48:51,466 INFO L226 Difference]: Without dead ends: 67407 [2019-09-08 07:48:51,554 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1177, Invalid=5629, Unknown=0, NotChecked=0, Total=6806 [2019-09-08 07:48:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67407 states. [2019-09-08 07:48:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67407 to 63120. [2019-09-08 07:48:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63120 states. [2019-09-08 07:48:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63120 states to 63120 states and 80456 transitions. [2019-09-08 07:48:58,560 INFO L78 Accepts]: Start accepts. Automaton has 63120 states and 80456 transitions. Word has length 106 [2019-09-08 07:48:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:58,561 INFO L475 AbstractCegarLoop]: Abstraction has 63120 states and 80456 transitions. [2019-09-08 07:48:58,561 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 07:48:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 63120 states and 80456 transitions. [2019-09-08 07:48:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:48:58,566 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:58,566 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:58,567 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:58,568 INFO L82 PathProgramCache]: Analyzing trace with hash 844873259, now seen corresponding path program 1 times [2019-09-08 07:48:58,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:58,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:58,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:58,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:58,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:48:58,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:58,884 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 07:48:58,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:58,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 07:48:58,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:59,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:48:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:48:59,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:48:59,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15] total 34 [2019-09-08 07:48:59,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-08 07:48:59,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-08 07:48:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2019-09-08 07:48:59,571 INFO L87 Difference]: Start difference. First operand 63120 states and 80456 transitions. Second operand 34 states. [2019-09-08 07:49:05,132 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-09-08 07:49:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:49:15,904 INFO L93 Difference]: Finished difference Result 246439 states and 317493 transitions. [2019-09-08 07:49:15,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-09-08 07:49:15,904 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 106 [2019-09-08 07:49:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:49:16,534 INFO L225 Difference]: With dead ends: 246439 [2019-09-08 07:49:16,535 INFO L226 Difference]: Without dead ends: 189377 [2019-09-08 07:49:16,662 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3583 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2326, Invalid=10106, Unknown=0, NotChecked=0, Total=12432 [2019-09-08 07:49:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189377 states. [2019-09-08 07:49:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189377 to 178399. [2019-09-08 07:49:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178399 states. [2019-09-08 07:49:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178399 states to 178399 states and 229917 transitions. [2019-09-08 07:49:33,092 INFO L78 Accepts]: Start accepts. Automaton has 178399 states and 229917 transitions. Word has length 106 [2019-09-08 07:49:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:33,092 INFO L475 AbstractCegarLoop]: Abstraction has 178399 states and 229917 transitions. [2019-09-08 07:49:33,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-09-08 07:49:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 178399 states and 229917 transitions. [2019-09-08 07:49:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:49:33,100 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:33,101 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:49:33,101 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:33,101 INFO L82 PathProgramCache]: Analyzing trace with hash -749411423, now seen corresponding path program 1 times [2019-09-08 07:49:33,101 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:33,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:33,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:49:33,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:33,170 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) [2019-09-08 07:49:33,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:49:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:33,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:49:33,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:49:33,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:49:33,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 13 [2019-09-08 07:49:33,387 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:49:33,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:49:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:49:33,388 INFO L87 Difference]: Start difference. First operand 178399 states and 229917 transitions. Second operand 13 states. [2019-09-08 07:49:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:49:42,508 INFO L93 Difference]: Finished difference Result 255620 states and 332953 transitions. [2019-09-08 07:49:42,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 07:49:42,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2019-09-08 07:49:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:49:42,722 INFO L225 Difference]: With dead ends: 255620 [2019-09-08 07:49:42,722 INFO L226 Difference]: Without dead ends: 84351 [2019-09-08 07:49:42,898 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:49:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84351 states. [2019-09-08 07:49:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84351 to 76567. [2019-09-08 07:49:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76567 states. [2019-09-08 07:49:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76567 states to 76567 states and 96219 transitions. [2019-09-08 07:49:48,399 INFO L78 Accepts]: Start accepts. Automaton has 76567 states and 96219 transitions. Word has length 106 [2019-09-08 07:49:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:48,400 INFO L475 AbstractCegarLoop]: Abstraction has 76567 states and 96219 transitions. [2019-09-08 07:49:48,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:49:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 76567 states and 96219 transitions. [2019-09-08 07:49:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:49:48,406 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:48,406 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:49:48,406 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2023704727, now seen corresponding path program 1 times [2019-09-08 07:49:48,407 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:48,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:48,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:48,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:48,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:49:48,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:48,470 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 07:49:48,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:48,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:49:48,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:49:48,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:49:48,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 13 [2019-09-08 07:49:48,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:49:48,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:49:48,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:49:48,715 INFO L87 Difference]: Start difference. First operand 76567 states and 96219 transitions. Second operand 13 states. [2019-09-08 07:49:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:49:52,469 INFO L93 Difference]: Finished difference Result 112470 states and 144159 transitions. [2019-09-08 07:49:52,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 07:49:52,470 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2019-09-08 07:49:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:49:52,572 INFO L225 Difference]: With dead ends: 112470 [2019-09-08 07:49:52,572 INFO L226 Difference]: Without dead ends: 40239 [2019-09-08 07:49:52,659 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:49:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40239 states. [2019-09-08 07:49:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40239 to 39001. [2019-09-08 07:49:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39001 states. [2019-09-08 07:49:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39001 states to 39001 states and 48336 transitions. [2019-09-08 07:49:57,705 INFO L78 Accepts]: Start accepts. Automaton has 39001 states and 48336 transitions. Word has length 106 [2019-09-08 07:49:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:57,706 INFO L475 AbstractCegarLoop]: Abstraction has 39001 states and 48336 transitions. [2019-09-08 07:49:57,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:49:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 39001 states and 48336 transitions. [2019-09-08 07:49:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:49:57,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:57,710 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:49:57,711 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:57,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1160648791, now seen corresponding path program 1 times [2019-09-08 07:49:57,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:57,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:57,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:57,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:57,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:49:58,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:58,074 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 07:49:58,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:58,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:49:58,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:49:58,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:49:58,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-09-08 07:49:58,351 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 07:49:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 07:49:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2019-09-08 07:49:58,352 INFO L87 Difference]: Start difference. First operand 39001 states and 48336 transitions. Second operand 24 states. [2019-09-08 07:49:59,567 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-08 07:50:00,580 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2019-09-08 07:50:01,692 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2019-09-08 07:50:06,418 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-08 07:50:06,886 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-09-08 07:50:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:16,368 INFO L93 Difference]: Finished difference Result 105216 states and 129855 transitions. [2019-09-08 07:50:16,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2019-09-08 07:50:16,368 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2019-09-08 07:50:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:16,589 INFO L225 Difference]: With dead ends: 105216 [2019-09-08 07:50:16,590 INFO L226 Difference]: Without dead ends: 67607 [2019-09-08 07:50:16,675 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 161 SyntacticMatches, 8 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10157 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=3272, Invalid=22488, Unknown=0, NotChecked=0, Total=25760 [2019-09-08 07:50:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67607 states. [2019-09-08 07:50:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67607 to 64003. [2019-09-08 07:50:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64003 states. [2019-09-08 07:50:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64003 states to 64003 states and 78300 transitions. [2019-09-08 07:50:21,571 INFO L78 Accepts]: Start accepts. Automaton has 64003 states and 78300 transitions. Word has length 106 [2019-09-08 07:50:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:21,571 INFO L475 AbstractCegarLoop]: Abstraction has 64003 states and 78300 transitions. [2019-09-08 07:50:21,571 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 07:50:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 64003 states and 78300 transitions. [2019-09-08 07:50:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:50:21,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:21,577 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:21,578 INFO L418 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash 501746269, now seen corresponding path program 1 times [2019-09-08 07:50:21,578 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:21,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:21,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:21,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:50:21,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:21,911 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 07:50:21,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:22,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:50:22,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:50:22,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:50:22,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-09-08 07:50:22,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 07:50:22,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 07:50:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2019-09-08 07:50:22,176 INFO L87 Difference]: Start difference. First operand 64003 states and 78300 transitions. Second operand 24 states. [2019-09-08 07:50:24,054 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2019-09-08 07:50:24,195 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2019-09-08 07:50:25,847 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2019-09-08 07:50:26,393 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2019-09-08 07:50:30,081 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-09-08 07:50:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:41,252 INFO L93 Difference]: Finished difference Result 140203 states and 170728 transitions. [2019-09-08 07:50:41,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2019-09-08 07:50:41,252 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2019-09-08 07:50:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:41,420 INFO L225 Difference]: With dead ends: 140203 [2019-09-08 07:50:41,420 INFO L226 Difference]: Without dead ends: 78489 [2019-09-08 07:50:41,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9728 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3324, Invalid=22116, Unknown=0, NotChecked=0, Total=25440 [2019-09-08 07:50:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78489 states. [2019-09-08 07:50:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78489 to 71725. [2019-09-08 07:50:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71725 states. [2019-09-08 07:50:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71725 states to 71725 states and 86401 transitions. [2019-09-08 07:50:47,355 INFO L78 Accepts]: Start accepts. Automaton has 71725 states and 86401 transitions. Word has length 106 [2019-09-08 07:50:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:47,356 INFO L475 AbstractCegarLoop]: Abstraction has 71725 states and 86401 transitions. [2019-09-08 07:50:47,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 07:50:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 71725 states and 86401 transitions. [2019-09-08 07:50:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:50:47,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:47,361 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:47,362 INFO L418 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:47,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1170784791, now seen corresponding path program 1 times [2019-09-08 07:50:47,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:47,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:47,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:47,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:47,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:50:47,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:47,518 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 07:50:48,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:48,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:50:48,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:50:48,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:50:48,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2019-09-08 07:50:48,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 07:50:48,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 07:50:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2019-09-08 07:50:48,347 INFO L87 Difference]: Start difference. First operand 71725 states and 86401 transitions. Second operand 24 states. [2019-09-08 07:50:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:59,061 INFO L93 Difference]: Finished difference Result 135639 states and 163563 transitions. [2019-09-08 07:50:59,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-08 07:50:59,061 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2019-09-08 07:50:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:59,260 INFO L225 Difference]: With dead ends: 135639 [2019-09-08 07:50:59,260 INFO L226 Difference]: Without dead ends: 82902 [2019-09-08 07:50:59,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1567, Invalid=6265, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 07:50:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82902 states. [2019-09-08 07:51:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82902 to 78518. [2019-09-08 07:51:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78518 states. [2019-09-08 07:51:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78518 states to 78518 states and 94229 transitions. [2019-09-08 07:51:06,413 INFO L78 Accepts]: Start accepts. Automaton has 78518 states and 94229 transitions. Word has length 106 [2019-09-08 07:51:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:06,413 INFO L475 AbstractCegarLoop]: Abstraction has 78518 states and 94229 transitions. [2019-09-08 07:51:06,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 07:51:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 78518 states and 94229 transitions. [2019-09-08 07:51:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-08 07:51:06,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:06,416 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:06,416 INFO L418 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:06,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1112118024, now seen corresponding path program 1 times [2019-09-08 07:51:06,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:06,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:06,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:06,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:06,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:51:07,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:51:07,008 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 07:51:07,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:07,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:51:07,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:51:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-08 07:51:07,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:51:07,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [26] total 33 [2019-09-08 07:51:07,344 INFO L454 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-09-08 07:51:07,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-09-08 07:51:07,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 07:51:07,344 INFO L87 Difference]: Start difference. First operand 78518 states and 94229 transitions. Second operand 33 states. [2019-09-08 07:51:08,609 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2019-09-08 07:51:08,798 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2019-09-08 07:51:08,998 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2019-09-08 07:51:09,177 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2019-09-08 07:51:09,306 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-08 07:51:09,746 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2019-09-08 07:51:10,516 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-08 07:51:10,854 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-08 07:51:11,021 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 07:51:11,206 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2019-09-08 07:51:11,374 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-08 07:51:12,009 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2019-09-08 07:51:12,190 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2019-09-08 07:51:12,397 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2019-09-08 07:51:12,570 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-08 07:51:13,381 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-08 07:51:13,599 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2019-09-08 07:51:13,970 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-08 07:51:14,202 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2019-09-08 07:51:14,525 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-08 07:51:14,700 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2019-09-08 07:51:14,956 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-08 07:51:15,281 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2019-09-08 07:51:16,576 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2019-09-08 07:51:16,747 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-08 07:51:17,005 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-08 07:51:17,179 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 07:51:17,747 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-08 07:51:17,911 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-09-08 07:51:18,099 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2019-09-08 07:51:18,670 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-08 07:51:19,040 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-08 07:51:19,208 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2019-09-08 07:51:19,394 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-08 07:51:19,965 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-08 07:51:20,462 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-08 07:51:20,806 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2019-09-08 07:51:21,139 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-08 07:51:21,290 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 07:51:21,759 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2019-09-08 07:51:21,963 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2019-09-08 07:51:22,359 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2019-09-08 07:51:22,558 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-08 07:51:22,867 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:51:23,138 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 07:51:23,828 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2019-09-08 07:51:24,269 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-08 07:51:24,406 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 07:51:24,570 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-08 07:51:24,718 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-08 07:51:24,923 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-08 07:51:25,080 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-08 07:51:25,252 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:51:25,528 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:51:25,682 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:51:26,036 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:51:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:30,072 INFO L93 Difference]: Finished difference Result 124242 states and 148742 transitions. [2019-09-08 07:51:30,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2019-09-08 07:51:30,074 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 107 [2019-09-08 07:51:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:30,161 INFO L225 Difference]: With dead ends: 124242 [2019-09-08 07:51:30,161 INFO L226 Difference]: Without dead ends: 45687 [2019-09-08 07:51:30,216 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 130 SyntacticMatches, 7 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7188 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=3379, Invalid=18083, Unknown=0, NotChecked=0, Total=21462 [2019-09-08 07:51:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45687 states. [2019-09-08 07:51:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45687 to 42859. [2019-09-08 07:51:33,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42859 states. [2019-09-08 07:51:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42859 states to 42859 states and 50241 transitions. [2019-09-08 07:51:34,455 INFO L78 Accepts]: Start accepts. Automaton has 42859 states and 50241 transitions. Word has length 107 [2019-09-08 07:51:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:34,456 INFO L475 AbstractCegarLoop]: Abstraction has 42859 states and 50241 transitions. [2019-09-08 07:51:34,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-09-08 07:51:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 42859 states and 50241 transitions. [2019-09-08 07:51:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-08 07:51:34,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:34,458 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:34,459 INFO L418 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash -998968086, now seen corresponding path program 1 times [2019-09-08 07:51:34,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:34,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:34,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:34,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:34,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:51:34,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:51:34,615 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 07:51:34,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:34,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:51:34,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:51:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:51:34,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:51:34,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2019-09-08 07:51:34,868 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 07:51:34,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 07:51:34,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:51:34,868 INFO L87 Difference]: Start difference. First operand 42859 states and 50241 transitions. Second operand 21 states. [2019-09-08 07:51:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:37,962 INFO L93 Difference]: Finished difference Result 53963 states and 63414 transitions. [2019-09-08 07:51:37,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-08 07:51:37,962 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2019-09-08 07:51:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:38,014 INFO L225 Difference]: With dead ends: 53963 [2019-09-08 07:51:38,014 INFO L226 Difference]: Without dead ends: 22558 [2019-09-08 07:51:38,046 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 07:51:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22558 states. [2019-09-08 07:51:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22558 to 22058. [2019-09-08 07:51:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22058 states. [2019-09-08 07:51:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22058 states to 22058 states and 25494 transitions. [2019-09-08 07:51:40,055 INFO L78 Accepts]: Start accepts. Automaton has 22058 states and 25494 transitions. Word has length 108 [2019-09-08 07:51:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:40,056 INFO L475 AbstractCegarLoop]: Abstraction has 22058 states and 25494 transitions. [2019-09-08 07:51:40,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 07:51:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 22058 states and 25494 transitions. [2019-09-08 07:51:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-08 07:51:40,058 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:40,058 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:40,058 INFO L418 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1157719295, now seen corresponding path program 1 times [2019-09-08 07:51:40,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:40,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:40,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:40,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:40,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:51:41,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:51:41,354 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 07:51:41,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:41,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-08 07:51:41,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:51:41,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:51:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:42,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:51:42,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 18] total 50 [2019-09-08 07:51:42,392 INFO L454 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-09-08 07:51:42,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-09-08 07:51:42,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2293, Unknown=0, NotChecked=0, Total=2450 [2019-09-08 07:51:42,392 INFO L87 Difference]: Start difference. First operand 22058 states and 25494 transitions. Second operand 50 states. [2019-09-08 07:51:42,752 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2019-09-08 07:51:44,049 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-09-08 07:51:45,126 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2019-09-08 07:51:45,277 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2019-09-08 07:51:45,466 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2019-09-08 07:51:45,694 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-09-08 07:51:45,931 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2019-09-08 07:51:46,559 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31 [2019-09-08 07:51:46,790 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2019-09-08 07:51:47,543 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2019-09-08 07:51:47,783 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 33 [2019-09-08 07:51:47,962 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2019-09-08 07:51:49,228 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2019-09-08 07:51:49,402 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-08 07:51:49,684 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 50 [2019-09-08 07:51:49,902 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 45 [2019-09-08 07:51:50,204 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-08 07:51:50,458 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2019-09-08 07:51:50,695 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2019-09-08 07:51:51,092 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2019-09-08 07:51:51,711 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2019-09-08 07:51:53,668 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2019-09-08 07:51:54,034 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-08 07:51:54,715 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2019-09-08 07:51:55,951 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-09-08 07:51:56,520 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2019-09-08 07:51:57,122 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-09-08 07:51:57,437 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2019-09-08 07:51:57,593 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-09-08 07:52:01,260 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-08 07:52:01,648 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2019-09-08 07:52:02,009 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2019-09-08 07:52:02,263 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2019-09-08 07:52:02,896 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2019-09-08 07:52:03,058 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-08 07:52:03,520 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 33 [2019-09-08 07:52:03,699 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2019-09-08 07:52:04,803 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 07:52:05,115 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2019-09-08 07:52:05,469 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-09-08 07:52:05,772 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 50 [2019-09-08 07:52:05,981 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 45 [2019-09-08 07:52:06,460 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-08 07:52:06,711 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2019-09-08 07:52:06,980 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2019-09-08 07:52:07,230 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-08 07:52:08,279 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-09-08 07:52:08,941 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-09-08 07:52:09,311 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2019-09-08 07:52:10,690 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-09-08 07:52:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:17,456 INFO L93 Difference]: Finished difference Result 37843 states and 43967 transitions. [2019-09-08 07:52:17,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2019-09-08 07:52:17,457 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 109 [2019-09-08 07:52:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:17,508 INFO L225 Difference]: With dead ends: 37843 [2019-09-08 07:52:17,508 INFO L226 Difference]: Without dead ends: 27681 [2019-09-08 07:52:17,526 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11206 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=3519, Invalid=30520, Unknown=1, NotChecked=0, Total=34040 [2019-09-08 07:52:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27681 states. [2019-09-08 07:52:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27681 to 25694. [2019-09-08 07:52:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25694 states. [2019-09-08 07:52:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25694 states to 25694 states and 29813 transitions. [2019-09-08 07:52:19,795 INFO L78 Accepts]: Start accepts. Automaton has 25694 states and 29813 transitions. Word has length 109 [2019-09-08 07:52:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:19,795 INFO L475 AbstractCegarLoop]: Abstraction has 25694 states and 29813 transitions. [2019-09-08 07:52:19,796 INFO L476 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-09-08 07:52:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 25694 states and 29813 transitions. [2019-09-08 07:52:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-09-08 07:52:19,804 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:19,805 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:19,805 INFO L418 AbstractCegarLoop]: === Iteration 25 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:19,805 INFO L82 PathProgramCache]: Analyzing trace with hash 182166532, now seen corresponding path program 1 times [2019-09-08 07:52:19,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:19,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:19,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:19,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:19,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 31 proven. 83 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-08 07:52:20,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:20,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:52:20,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:20,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-08 07:52:20,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:20,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 62 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:52:21,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:21,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18] total 40 [2019-09-08 07:52:21,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-08 07:52:21,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-08 07:52:21,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2019-09-08 07:52:21,818 INFO L87 Difference]: Start difference. First operand 25694 states and 29813 transitions. Second operand 40 states. [2019-09-08 07:52:22,307 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 07:52:22,538 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-08 07:52:22,864 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:52:23,523 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 07:52:23,707 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:52:24,184 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-08 07:52:24,402 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:52:24,611 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 07:52:24,857 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-08 07:52:25,194 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:52:25,622 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 07:52:25,868 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 07:52:26,629 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:52:26,979 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:52:27,415 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:52:27,824 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:52:28,108 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:52:28,377 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:52:28,594 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 07:52:28,871 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:52:29,912 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-08 07:52:30,284 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-08 07:52:30,484 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 07:52:30,816 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 07:52:31,011 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 07:52:31,164 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-08 07:52:31,368 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:52:31,550 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:52:31,976 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-08 07:52:32,169 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-08 07:52:32,453 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:52:32,621 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 07:52:33,240 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 07:52:33,567 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 07:52:34,391 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-08 07:52:34,579 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 07:52:35,106 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 07:52:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:38,650 INFO L93 Difference]: Finished difference Result 46789 states and 54471 transitions. [2019-09-08 07:52:38,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-08 07:52:38,650 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 186 [2019-09-08 07:52:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:38,704 INFO L225 Difference]: With dead ends: 46789 [2019-09-08 07:52:38,704 INFO L226 Difference]: Without dead ends: 26344 [2019-09-08 07:52:38,728 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1142, Invalid=5500, Unknown=0, NotChecked=0, Total=6642 [2019-09-08 07:52:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26344 states. [2019-09-08 07:52:41,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26344 to 25952. [2019-09-08 07:52:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25952 states. [2019-09-08 07:52:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25952 states to 25952 states and 30062 transitions. [2019-09-08 07:52:41,604 INFO L78 Accepts]: Start accepts. Automaton has 25952 states and 30062 transitions. Word has length 186 [2019-09-08 07:52:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:41,605 INFO L475 AbstractCegarLoop]: Abstraction has 25952 states and 30062 transitions. [2019-09-08 07:52:41,605 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-08 07:52:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 25952 states and 30062 transitions. [2019-09-08 07:52:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-09-08 07:52:41,610 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:41,610 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:41,611 INFO L418 AbstractCegarLoop]: === Iteration 26 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1728876026, now seen corresponding path program 1 times [2019-09-08 07:52:41,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:41,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:41,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:41,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:41,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-08 07:52:41,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:41,710 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 07:52:41,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:41,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 07:52:41,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 130 proven. 40 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-08 07:52:42,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:42,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2019-09-08 07:52:42,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-08 07:52:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-08 07:52:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-09-08 07:52:42,002 INFO L87 Difference]: Start difference. First operand 25952 states and 30062 transitions. Second operand 14 states. [2019-09-08 07:52:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:44,070 INFO L93 Difference]: Finished difference Result 33502 states and 39000 transitions. [2019-09-08 07:52:44,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 07:52:44,071 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2019-09-08 07:52:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:44,087 INFO L225 Difference]: With dead ends: 33502 [2019-09-08 07:52:44,087 INFO L226 Difference]: Without dead ends: 10070 [2019-09-08 07:52:44,110 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:52:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10070 states. [2019-09-08 07:52:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 9828. [2019-09-08 07:52:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9828 states. [2019-09-08 07:52:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9828 states to 9828 states and 11325 transitions. [2019-09-08 07:52:45,328 INFO L78 Accepts]: Start accepts. Automaton has 9828 states and 11325 transitions. Word has length 186 [2019-09-08 07:52:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:45,328 INFO L475 AbstractCegarLoop]: Abstraction has 9828 states and 11325 transitions. [2019-09-08 07:52:45,328 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-08 07:52:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9828 states and 11325 transitions. [2019-09-08 07:52:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-09-08 07:52:45,332 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:45,332 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:45,332 INFO L418 AbstractCegarLoop]: === Iteration 27 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash -536269113, now seen corresponding path program 1 times [2019-09-08 07:52:45,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:45,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:45,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:45,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:45,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-09-08 07:52:45,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:45,692 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 07:52:45,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:45,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-08 07:52:45,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:46,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:46,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 43 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:52:46,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:46,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 37 [2019-09-08 07:52:46,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-08 07:52:46,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-08 07:52:46,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1211, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 07:52:46,818 INFO L87 Difference]: Start difference. First operand 9828 states and 11325 transitions. Second operand 37 states. [2019-09-08 07:52:47,004 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 07:52:47,160 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-08 07:52:47,328 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 07:52:47,960 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2019-09-08 07:52:48,260 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-08 07:52:48,487 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-08 07:52:48,741 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 07:52:48,916 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:52:49,115 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 07:52:49,781 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-08 07:52:49,999 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-08 07:52:50,596 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 07:52:50,911 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 07:52:51,197 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-08 07:52:51,935 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 07:52:52,177 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-08 07:52:52,430 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:52:52,713 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:52:52,932 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 07:52:53,112 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 07:52:53,415 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 07:52:53,796 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-08 07:52:54,019 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 07:52:54,722 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 07:52:54,955 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:52:55,396 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:52:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:56,772 INFO L93 Difference]: Finished difference Result 16599 states and 19191 transitions. [2019-09-08 07:52:56,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-08 07:52:56,773 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 187 [2019-09-08 07:52:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:56,790 INFO L225 Difference]: With dead ends: 16599 [2019-09-08 07:52:56,790 INFO L226 Difference]: Without dead ends: 9854 [2019-09-08 07:52:56,799 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=779, Invalid=4051, Unknown=0, NotChecked=0, Total=4830 [2019-09-08 07:52:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9854 states. [2019-09-08 07:52:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9854 to 9795. [2019-09-08 07:52:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2019-09-08 07:52:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 11242 transitions. [2019-09-08 07:52:58,152 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 11242 transitions. Word has length 187 [2019-09-08 07:52:58,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:58,152 INFO L475 AbstractCegarLoop]: Abstraction has 9795 states and 11242 transitions. [2019-09-08 07:52:58,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-08 07:52:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 11242 transitions. [2019-09-08 07:52:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-09-08 07:52:58,156 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:58,156 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:58,156 INFO L418 AbstractCegarLoop]: === Iteration 28 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash 263003485, now seen corresponding path program 1 times [2019-09-08 07:52:58,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:58,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:58,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:58,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:58,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 36 proven. 79 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-08 07:52:58,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:58,713 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 07:52:58,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:58,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-08 07:52:58,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:59,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:59,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 78 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:52:59,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:59,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18] total 41 [2019-09-08 07:52:59,773 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-08 07:52:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-08 07:52:59,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1504, Unknown=0, NotChecked=0, Total=1640 [2019-09-08 07:52:59,774 INFO L87 Difference]: Start difference. First operand 9795 states and 11242 transitions. Second operand 41 states. [2019-09-08 07:53:00,046 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 07:53:00,266 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 07:53:00,919 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 07:53:01,260 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:53:01,512 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 07:53:02,045 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 07:53:02,273 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-08 07:53:02,429 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:53:02,720 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-08 07:53:02,927 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:53:03,594 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:53:04,250 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:53:04,535 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:53:04,928 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:53:05,398 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:53:05,808 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-08 07:53:05,975 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 07:53:06,150 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-08 07:53:06,331 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:53:06,720 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-08 07:53:07,182 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 07:53:07,455 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 07:53:07,654 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 07:53:07,865 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 07:53:08,385 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:53:08,749 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 07:53:09,391 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 07:53:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:11,084 INFO L93 Difference]: Finished difference Result 17274 states and 19910 transitions. [2019-09-08 07:53:11,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 07:53:11,085 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 187 [2019-09-08 07:53:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:11,102 INFO L225 Difference]: With dead ends: 17274 [2019-09-08 07:53:11,102 INFO L226 Difference]: Without dead ends: 9805 [2019-09-08 07:53:11,112 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=880, Invalid=4376, Unknown=0, NotChecked=0, Total=5256 [2019-09-08 07:53:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2019-09-08 07:53:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 9795. [2019-09-08 07:53:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2019-09-08 07:53:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 11185 transitions. [2019-09-08 07:53:12,700 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 11185 transitions. Word has length 187 [2019-09-08 07:53:12,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:53:12,701 INFO L475 AbstractCegarLoop]: Abstraction has 9795 states and 11185 transitions. [2019-09-08 07:53:12,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-08 07:53:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 11185 transitions. [2019-09-08 07:53:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-09-08 07:53:12,706 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:53:12,706 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:53:12,706 INFO L418 AbstractCegarLoop]: === Iteration 29 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:53:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:53:12,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1256704297, now seen corresponding path program 1 times [2019-09-08 07:53:12,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:53:12,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:53:12,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:12,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:12,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 39 proven. 92 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-09-08 07:53:13,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:53:13,389 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 07:53:13,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:13,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 46 conjunts are in the unsatisfiable core [2019-09-08 07:53:13,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:53:14,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:14,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:14,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:14,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:14,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:18,220 WARN L188 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 31 [2019-09-08 07:53:18,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 33 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:53:20,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:53:20,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29] total 60 [2019-09-08 07:53:20,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-09-08 07:53:20,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-09-08 07:53:20,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3353, Unknown=3, NotChecked=0, Total=3540 [2019-09-08 07:53:20,458 INFO L87 Difference]: Start difference. First operand 9795 states and 11185 transitions. Second operand 60 states. [2019-09-08 07:53:20,837 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-09-08 07:53:21,201 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-08 07:53:21,686 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2019-09-08 07:53:30,635 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 07:53:31,667 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2019-09-08 07:53:31,951 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-09-08 07:53:32,394 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-08 07:53:32,773 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2019-09-08 07:53:33,094 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-08 07:53:33,330 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-08 07:53:33,888 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-08 07:53:34,949 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-08 07:53:38,747 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 07:53:39,505 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 07:53:40,353 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-08 07:53:41,127 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 07:53:43,448 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:53:44,679 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 07:54:15,168 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2019-09-08 07:54:15,839 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2019-09-08 07:54:16,441 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-08 07:54:19,258 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-09-08 07:54:21,703 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-08 07:54:22,805 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-08 07:54:24,532 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-08 07:54:25,302 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 07:54:25,530 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-09-08 07:54:27,766 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2019-09-08 07:54:29,720 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 07:54:31,261 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 07:54:31,866 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 07:54:33,584 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 07:54:34,799 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 07:54:41,323 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 07:54:42,139 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 07:54:42,611 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 07:54:44,598 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 07:54:46,139 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 07:54:50,527 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-08 07:54:52,599 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-08 07:54:53,699 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 07:55:02,036 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-08 07:55:03,755 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-09-08 07:55:08,588 WARN L188 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-08 07:55:13,640 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 07:55:14,194 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-08 07:55:39,811 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-08 07:55:40,831 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-08 07:55:41,681 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-08 07:55:42,799 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-08 07:55:54,097 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-08 07:56:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:56:03,810 INFO L93 Difference]: Finished difference Result 27440 states and 31654 transitions. [2019-09-08 07:56:03,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2019-09-08 07:56:03,811 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 188 [2019-09-08 07:56:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:56:03,845 INFO L225 Difference]: With dead ends: 27440 [2019-09-08 07:56:03,845 INFO L226 Difference]: Without dead ends: 21250 [2019-09-08 07:56:03,858 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34824 ImplicationChecksByTransitivity, 73.4s TimeCoverageRelationStatistics Valid=6660, Invalid=89730, Unknown=20, NotChecked=0, Total=96410 [2019-09-08 07:56:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21250 states. [2019-09-08 07:56:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21250 to 17854. [2019-09-08 07:56:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17854 states. [2019-09-08 07:56:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17854 states to 17854 states and 20434 transitions. [2019-09-08 07:56:06,681 INFO L78 Accepts]: Start accepts. Automaton has 17854 states and 20434 transitions. Word has length 188 [2019-09-08 07:56:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:56:06,682 INFO L475 AbstractCegarLoop]: Abstraction has 17854 states and 20434 transitions. [2019-09-08 07:56:06,682 INFO L476 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-09-08 07:56:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 17854 states and 20434 transitions. [2019-09-08 07:56:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-08 07:56:06,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:56:06,685 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:56:06,685 INFO L418 AbstractCegarLoop]: === Iteration 30 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:56:06,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:56:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash 861645100, now seen corresponding path program 1 times [2019-09-08 07:56:06,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:56:06,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:56:06,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:06,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:06,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 36 proven. 68 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-09-08 07:56:07,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:56:07,210 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 07:56:07,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:07,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 96 conjunts are in the unsatisfiable core [2019-09-08 07:56:07,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:56:08,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:56:08,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:56:09,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:56:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 70 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:56:11,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:56:11,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 44] total 68 [2019-09-08 07:56:11,903 INFO L454 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-09-08 07:56:11,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-09-08 07:56:11,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=4247, Unknown=0, NotChecked=0, Total=4556 [2019-09-08 07:56:11,905 INFO L87 Difference]: Start difference. First operand 17854 states and 20434 transitions. Second operand 68 states. [2019-09-08 07:56:14,419 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 07:56:21,922 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2019-09-08 07:56:22,497 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-08 07:56:23,217 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-08 07:56:24,995 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 07:56:25,645 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-08 07:56:26,051 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-08 07:56:27,747 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-08 07:56:29,829 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 07:56:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:56:46,765 INFO L93 Difference]: Finished difference Result 42061 states and 48492 transitions. [2019-09-08 07:56:46,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2019-09-08 07:56:46,765 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 189 [2019-09-08 07:56:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:56:46,817 INFO L225 Difference]: With dead ends: 42061 [2019-09-08 07:56:46,817 INFO L226 Difference]: Without dead ends: 30622 [2019-09-08 07:56:46,833 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15004 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=3254, Invalid=38566, Unknown=0, NotChecked=0, Total=41820 [2019-09-08 07:56:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30622 states. [2019-09-08 07:56:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30622 to 21433. [2019-09-08 07:56:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21433 states. [2019-09-08 07:56:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21433 states to 21433 states and 24482 transitions. [2019-09-08 07:56:50,521 INFO L78 Accepts]: Start accepts. Automaton has 21433 states and 24482 transitions. Word has length 189 [2019-09-08 07:56:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:56:50,522 INFO L475 AbstractCegarLoop]: Abstraction has 21433 states and 24482 transitions. [2019-09-08 07:56:50,522 INFO L476 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-09-08 07:56:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 21433 states and 24482 transitions. [2019-09-08 07:56:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-09-08 07:56:50,526 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:56:50,527 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:56:50,527 INFO L418 AbstractCegarLoop]: === Iteration 31 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:56:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:56:50,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1140409976, now seen corresponding path program 1 times [2019-09-08 07:56:50,527 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:56:50,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:56:50,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:50,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:50,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 102 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-08 07:56:51,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:56:51,986 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:56:51,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:52,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 07:56:52,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:56:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 24 proven. 123 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-09-08 07:56:52,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:56:52,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 7] total 49 [2019-09-08 07:56:52,655 INFO L454 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-09-08 07:56:52,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-09-08 07:56:52,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2231, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:56:52,657 INFO L87 Difference]: Start difference. First operand 21433 states and 24482 transitions. Second operand 49 states. [2019-09-08 07:56:52,977 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-08 07:56:53,230 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-08 07:56:53,548 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-08 07:56:55,408 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 07:56:56,064 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 07:56:56,249 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2019-09-08 07:56:56,463 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 07:56:56,667 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-08 07:56:56,933 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-08 07:56:57,188 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2019-09-08 07:56:57,449 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-08 07:56:57,771 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 07:57:08,022 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2019-09-08 07:57:10,244 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 07:57:10,771 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:57:11,208 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-08 07:57:11,553 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 07:57:13,084 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2019-09-08 07:57:13,803 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2019-09-08 07:57:14,597 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-08 07:57:15,054 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-08 07:57:30,024 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 07:57:30,918 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2019-09-08 07:57:31,959 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 07:57:32,819 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 07:57:33,153 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-08 07:57:33,872 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-08 07:57:34,314 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2019-09-08 07:57:34,999 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 07:57:35,524 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 07:57:35,981 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2019-09-08 07:57:36,346 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-08 07:57:36,753 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 07:57:45,507 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2019-09-08 07:57:47,604 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2019-09-08 07:57:48,339 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-08 07:57:48,769 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-08 07:57:49,034 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2019-09-08 07:57:49,340 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-08 07:57:49,665 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 07:57:51,872 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-08 07:57:55,176 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-08 07:57:56,257 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:57:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:57:59,659 INFO L93 Difference]: Finished difference Result 47834 states and 54786 transitions. [2019-09-08 07:57:59,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2019-09-08 07:57:59,660 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2019-09-08 07:57:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:57:59,709 INFO L225 Difference]: With dead ends: 47834 [2019-09-08 07:57:59,710 INFO L226 Difference]: Without dead ends: 26955 [2019-09-08 07:57:59,735 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53869 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=7845, Invalid=130911, Unknown=0, NotChecked=0, Total=138756 [2019-09-08 07:57:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26955 states. [2019-09-08 07:58:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26955 to 25003. [2019-09-08 07:58:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25003 states. [2019-09-08 07:58:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25003 states to 25003 states and 28331 transitions. [2019-09-08 07:58:04,110 INFO L78 Accepts]: Start accepts. Automaton has 25003 states and 28331 transitions. Word has length 190 [2019-09-08 07:58:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:58:04,110 INFO L475 AbstractCegarLoop]: Abstraction has 25003 states and 28331 transitions. [2019-09-08 07:58:04,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-09-08 07:58:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 25003 states and 28331 transitions. [2019-09-08 07:58:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-09-08 07:58:04,113 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:58:04,113 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2019-09-08 07:58:04,113 INFO L418 AbstractCegarLoop]: === Iteration 32 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:58:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:58:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash 475117422, now seen corresponding path program 1 times [2019-09-08 07:58:04,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:58:04,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:58:04,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:04,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:58:04,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:58:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 25 proven. 103 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-08 07:58:05,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:58:05,319 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:58:05,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:58:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:58:05,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 60 conjunts are in the unsatisfiable core [2019-09-08 07:58:05,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:58:07,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:58:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 57 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:58:08,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:58:08,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 34] total 75 [2019-09-08 07:58:08,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 75 states [2019-09-08 07:58:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2019-09-08 07:58:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=5244, Unknown=0, NotChecked=0, Total=5550 [2019-09-08 07:58:08,439 INFO L87 Difference]: Start difference. First operand 25003 states and 28331 transitions. Second operand 75 states. [2019-09-08 07:58:08,727 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-08 07:58:08,932 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 07:58:09,322 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-08 07:58:12,737 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2019-09-08 07:58:13,272 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-08 07:58:22,141 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 07:58:23,296 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 07:58:23,812 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-08 07:58:24,253 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 07:58:26,275 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 07:58:26,556 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-08 07:58:28,213 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-08 07:58:29,490 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-08 07:58:37,596 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-08 07:58:39,463 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 07:58:48,039 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 07:58:48,685 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:58:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:58:54,825 INFO L93 Difference]: Finished difference Result 38283 states and 43569 transitions. [2019-09-08 07:58:54,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2019-09-08 07:58:54,826 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 190 [2019-09-08 07:58:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:58:54,881 INFO L225 Difference]: With dead ends: 38283 [2019-09-08 07:58:54,881 INFO L226 Difference]: Without dead ends: 31459 [2019-09-08 07:58:54,896 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29694 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=5889, Invalid=77921, Unknown=0, NotChecked=0, Total=83810 [2019-09-08 07:58:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31459 states. [2019-09-08 07:58:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31459 to 27706. [2019-09-08 07:58:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27706 states. [2019-09-08 07:58:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27706 states to 27706 states and 31423 transitions. [2019-09-08 07:58:59,624 INFO L78 Accepts]: Start accepts. Automaton has 27706 states and 31423 transitions. Word has length 190 [2019-09-08 07:58:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:58:59,624 INFO L475 AbstractCegarLoop]: Abstraction has 27706 states and 31423 transitions. [2019-09-08 07:58:59,625 INFO L476 AbstractCegarLoop]: Interpolant automaton has 75 states. [2019-09-08 07:58:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 27706 states and 31423 transitions. [2019-09-08 07:58:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-09-08 07:58:59,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:58:59,627 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2019-09-08 07:58:59,627 INFO L418 AbstractCegarLoop]: === Iteration 33 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:58:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:58:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash 421812200, now seen corresponding path program 1 times [2019-09-08 07:58:59,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:58:59,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:58:59,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:59,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:58:59,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:59:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 48 proven. 84 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-08 07:59:00,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:59:00,561 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:59:00,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:59:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:59:00,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 72 conjunts are in the unsatisfiable core [2019-09-08 07:59:00,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:59:02,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:03,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 75 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:59:04,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:59:04,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 37] total 68 [2019-09-08 07:59:04,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-09-08 07:59:04,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-09-08 07:59:04,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=4245, Unknown=0, NotChecked=0, Total=4556 [2019-09-08 07:59:04,311 INFO L87 Difference]: Start difference. First operand 27706 states and 31423 transitions. Second operand 68 states. [2019-09-08 07:59:04,829 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-09-08 07:59:07,610 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 07:59:19,386 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-08 07:59:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:59:30,710 INFO L93 Difference]: Finished difference Result 34748 states and 39419 transitions. [2019-09-08 07:59:30,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-09-08 07:59:30,710 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 190 [2019-09-08 07:59:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:59:30,757 INFO L225 Difference]: With dead ends: 34748 [2019-09-08 07:59:30,757 INFO L226 Difference]: Without dead ends: 28972 [2019-09-08 07:59:30,769 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7817 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2290, Invalid=24770, Unknown=0, NotChecked=0, Total=27060 [2019-09-08 07:59:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28972 states. [2019-09-08 07:59:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28972 to 28064. [2019-09-08 07:59:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28064 states. [2019-09-08 07:59:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28064 states to 28064 states and 31809 transitions. [2019-09-08 07:59:35,718 INFO L78 Accepts]: Start accepts. Automaton has 28064 states and 31809 transitions. Word has length 190 [2019-09-08 07:59:35,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:59:35,719 INFO L475 AbstractCegarLoop]: Abstraction has 28064 states and 31809 transitions. [2019-09-08 07:59:35,719 INFO L476 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-09-08 07:59:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 28064 states and 31809 transitions. [2019-09-08 07:59:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-09-08 07:59:35,722 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:59:35,723 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 07:59:35,723 INFO L418 AbstractCegarLoop]: === Iteration 34 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:59:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:59:35,723 INFO L82 PathProgramCache]: Analyzing trace with hash -655520801, now seen corresponding path program 1 times [2019-09-08 07:59:35,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:59:35,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:59:35,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:59:35,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:59:35,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:59:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:59:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 33 proven. 73 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-09-08 07:59:36,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:59:36,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:59:36,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:59:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:59:36,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 71 conjunts are in the unsatisfiable core [2019-09-08 07:59:36,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:59:36,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:36,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:36,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:37,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 07:59:37,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:37,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:37,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:37,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:37,533 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 75 [2019-09-08 07:59:37,873 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2019-09-08 07:59:38,289 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2019-09-08 07:59:38,503 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-08 07:59:38,708 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-09-08 07:59:38,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 07:59:38,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:38,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:38,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:38,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:39,237 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 44 [2019-09-08 07:59:40,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:40,895 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-08 07:59:41,382 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-09-08 07:59:41,803 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-08 07:59:41,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:59:44,174 WARN L188 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-08 07:59:44,394 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-08 07:59:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 39 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:59:44,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:59:44,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 39] total 62 [2019-09-08 07:59:44,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-09-08 07:59:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-09-08 07:59:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3601, Unknown=0, NotChecked=0, Total=3782 [2019-09-08 07:59:44,989 INFO L87 Difference]: Start difference. First operand 28064 states and 31809 transitions. Second operand 62 states. [2019-09-08 07:59:55,663 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-08 07:59:56,038 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2019-09-08 07:59:56,451 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 07:59:58,581 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 07:59:59,244 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 58 [2019-09-08 07:59:59,826 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2019-09-08 08:00:00,555 WARN L188 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-08 08:00:01,861 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2019-09-08 08:00:11,880 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-08 08:00:13,700 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-09-08 08:00:15,304 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 08:00:15,757 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2019-09-08 08:00:44,652 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 52 [2019-09-08 08:00:46,691 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 08:00:47,016 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-08 08:00:47,553 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2019-09-08 08:00:48,099 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-08 08:00:50,910 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2019-09-08 08:00:52,607 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 67 [2019-09-08 08:00:53,129 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2019-09-08 08:00:53,846 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2019-09-08 08:00:54,695 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70