/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:18:04,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:18:04,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:18:04,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:18:04,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:18:04,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:18:04,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:18:04,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:18:04,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:18:04,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:18:04,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:18:04,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:18:04,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:18:04,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:18:04,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:18:04,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:18:04,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:18:04,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:18:04,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:18:04,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:18:04,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:18:04,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:18:04,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:18:04,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:18:04,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:18:04,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:18:04,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:18:04,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:18:04,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:18:04,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:18:04,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:18:04,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:18:04,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:18:04,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:18:04,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:18:04,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:18:04,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:18:04,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:18:04,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:18:04,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:18:04,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:18:04,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:18:04,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:18:04,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:18:04,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:18:04,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:18:04,812 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:18:04,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:18:04,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:18:04,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:18:04,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:18:04,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:18:04,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:18:04,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:18:04,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:18:04,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:18:04,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:18:04,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:18:04,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:18:04,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:18:04,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:18:04,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:18:04,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:18:04,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:18:04,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:18:04,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:18:05,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:18:05,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:18:05,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:18:05,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:18:05,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:18:05,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 19:18:05,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c2aea79e/103f4044d3c249c3af6406f1bbb7b2b8/FLAGccbf3dfc0 [2020-10-12 19:18:05,766 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:18:05,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 19:18:05,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c2aea79e/103f4044d3c249c3af6406f1bbb7b2b8/FLAGccbf3dfc0 [2020-10-12 19:18:06,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c2aea79e/103f4044d3c249c3af6406f1bbb7b2b8 [2020-10-12 19:18:06,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:18:06,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:18:06,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:06,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:18:06,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:18:06,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1573d552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06, skipping insertion in model container [2020-10-12 19:18:06,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:18:06,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:18:06,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:06,606 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:18:06,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:06,766 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:18:06,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06 WrapperNode [2020-10-12 19:18:06,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:06,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:18:06,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:18:06,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:18:06,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... [2020-10-12 19:18:06,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:18:06,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:18:06,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:18:06,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:18:06,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 19:18:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:18:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:18:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:18:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:18:06,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:18:06,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:18:06,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:18:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:18:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:18:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:18:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:18:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:18:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:18:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:18:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:18:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:18:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:18:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:18:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:18:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:18:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:18:08,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:18:08,410 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:18:08,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:08 BoogieIcfgContainer [2020-10-12 19:18:08,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:18:08,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:18:08,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:18:08,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:18:08,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:18:06" (1/3) ... [2020-10-12 19:18:08,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a207a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:08, skipping insertion in model container [2020-10-12 19:18:08,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:06" (2/3) ... [2020-10-12 19:18:08,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a207a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:08, skipping insertion in model container [2020-10-12 19:18:08,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:08" (3/3) ... [2020-10-12 19:18:08,426 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 19:18:08,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:18:08,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:18:08,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:18:08,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:18:08,492 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:18:08,492 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:18:08,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:18:08,492 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:18:08,493 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:18:08,493 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:18:08,493 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:18:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-12 19:18:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:18:08,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:08,536 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:08,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-12 19:18:08,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:08,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269288505] [2020-10-12 19:18:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:14,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:14,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:18:14,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:18:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:18:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:18:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 19:18:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:18:14,765 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:18:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:14,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:14,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:14,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:18:14,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:14,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:14,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:14,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:14,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269288505] [2020-10-12 19:18:14,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:14,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:18:14,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361139588] [2020-10-12 19:18:14,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:18:14,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:14,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:18:14,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:18:14,887 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 7 states. [2020-10-12 19:18:15,376 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-12 19:18:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:17,946 INFO L93 Difference]: Finished difference Result 1372 states and 2345 transitions. [2020-10-12 19:18:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:18:17,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 19:18:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:17,978 INFO L225 Difference]: With dead ends: 1372 [2020-10-12 19:18:17,979 INFO L226 Difference]: Without dead ends: 1209 [2020-10-12 19:18:17,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:18:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-12 19:18:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 445. [2020-10-12 19:18:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-12 19:18:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 742 transitions. [2020-10-12 19:18:18,094 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 742 transitions. Word has length 115 [2020-10-12 19:18:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:18,095 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 742 transitions. [2020-10-12 19:18:18,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:18:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 742 transitions. [2020-10-12 19:18:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:18:18,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:18,108 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:18,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:18:18,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:18,109 INFO L82 PathProgramCache]: Analyzing trace with hash 238492466, now seen corresponding path program 1 times [2020-10-12 19:18:18,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:18,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399290065] [2020-10-12 19:18:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:18,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:18:23,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:18:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 19:18:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 19:18:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:23,578 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:18:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:23,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:23,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:18:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:23,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399290065] [2020-10-12 19:18:23,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:23,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:18:23,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810434713] [2020-10-12 19:18:23,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:18:23,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:23,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:18:23,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:18:23,643 INFO L87 Difference]: Start difference. First operand 445 states and 742 transitions. Second operand 8 states. [2020-10-12 19:18:24,184 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-12 19:18:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:27,151 INFO L93 Difference]: Finished difference Result 3103 states and 5237 transitions. [2020-10-12 19:18:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:18:27,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-12 19:18:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:27,179 INFO L225 Difference]: With dead ends: 3103 [2020-10-12 19:18:27,180 INFO L226 Difference]: Without dead ends: 2851 [2020-10-12 19:18:27,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:18:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2020-10-12 19:18:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1123. [2020-10-12 19:18:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-12 19:18:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1891 transitions. [2020-10-12 19:18:27,389 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1891 transitions. Word has length 116 [2020-10-12 19:18:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:27,393 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1891 transitions. [2020-10-12 19:18:27,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1891 transitions. [2020-10-12 19:18:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:18:27,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:27,404 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:27,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:18:27,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:27,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1258278418, now seen corresponding path program 1 times [2020-10-12 19:18:27,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:27,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204260403] [2020-10-12 19:18:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:32,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:32,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:18:32,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:18:32,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:18:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:33,081 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:18:33,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:33,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:33,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 19:18:33,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:33,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204260403] [2020-10-12 19:18:33,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:33,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:18:33,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622273594] [2020-10-12 19:18:33,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:18:33,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:33,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:18:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:18:33,194 INFO L87 Difference]: Start difference. First operand 1123 states and 1891 transitions. Second operand 8 states. [2020-10-12 19:18:33,694 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-12 19:18:36,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:36,633 INFO L93 Difference]: Finished difference Result 8860 states and 14958 transitions. [2020-10-12 19:18:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:18:36,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-12 19:18:36,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:36,678 INFO L225 Difference]: With dead ends: 8860 [2020-10-12 19:18:36,679 INFO L226 Difference]: Without dead ends: 8020 [2020-10-12 19:18:36,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:18:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8020 states. [2020-10-12 19:18:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8020 to 3106. [2020-10-12 19:18:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-12 19:18:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5238 transitions. [2020-10-12 19:18:36,965 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5238 transitions. Word has length 117 [2020-10-12 19:18:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:36,966 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5238 transitions. [2020-10-12 19:18:36,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5238 transitions. [2020-10-12 19:18:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 19:18:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:36,969 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:36,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:18:36,970 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash -408977543, now seen corresponding path program 1 times [2020-10-12 19:18:36,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:36,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995999165] [2020-10-12 19:18:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 19:18:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:18:42,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:18:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:42,610 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:18:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:18:42,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:42,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995999165] [2020-10-12 19:18:42,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:42,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:18:42,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769415356] [2020-10-12 19:18:42,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:18:42,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:42,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:18:42,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:18:42,710 INFO L87 Difference]: Start difference. First operand 3106 states and 5238 transitions. Second operand 8 states. [2020-10-12 19:18:43,128 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-12 19:18:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:46,685 INFO L93 Difference]: Finished difference Result 25193 states and 42447 transitions. [2020-10-12 19:18:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:18:46,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-12 19:18:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:46,775 INFO L225 Difference]: With dead ends: 25193 [2020-10-12 19:18:46,775 INFO L226 Difference]: Without dead ends: 22471 [2020-10-12 19:18:46,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:18:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22471 states. [2020-10-12 19:18:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22471 to 8610. [2020-10-12 19:18:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8610 states. [2020-10-12 19:18:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8610 states to 8610 states and 14498 transitions. [2020-10-12 19:18:47,809 INFO L78 Accepts]: Start accepts. Automaton has 8610 states and 14498 transitions. Word has length 118 [2020-10-12 19:18:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:47,810 INFO L479 AbstractCegarLoop]: Abstraction has 8610 states and 14498 transitions. [2020-10-12 19:18:47,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8610 states and 14498 transitions. [2020-10-12 19:18:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 19:18:47,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:47,813 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:47,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:18:47,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1170707965, now seen corresponding path program 1 times [2020-10-12 19:18:47,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:47,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069475857] [2020-10-12 19:18:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:52,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 19:18:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:18:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 19:18:52,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:18:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 19:18:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:53,387 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:18:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:53,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:53,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:18:53,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:53,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069475857] [2020-10-12 19:18:53,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:53,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:18:53,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117358857] [2020-10-12 19:18:53,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:18:53,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:53,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:18:53,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:18:53,443 INFO L87 Difference]: Start difference. First operand 8610 states and 14498 transitions. Second operand 7 states. [2020-10-12 19:18:53,864 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:18:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:57,868 INFO L93 Difference]: Finished difference Result 41126 states and 69186 transitions. [2020-10-12 19:18:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:18:57,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-12 19:18:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:57,953 INFO L225 Difference]: With dead ends: 41126 [2020-10-12 19:18:57,953 INFO L226 Difference]: Without dead ends: 32967 [2020-10-12 19:18:57,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:18:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32967 states. [2020-10-12 19:18:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32967 to 16254. [2020-10-12 19:18:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16254 states. [2020-10-12 19:18:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16254 states to 16254 states and 27321 transitions. [2020-10-12 19:18:59,439 INFO L78 Accepts]: Start accepts. Automaton has 16254 states and 27321 transitions. Word has length 119 [2020-10-12 19:18:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:59,439 INFO L479 AbstractCegarLoop]: Abstraction has 16254 states and 27321 transitions. [2020-10-12 19:18:59,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:18:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 16254 states and 27321 transitions. [2020-10-12 19:18:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 19:18:59,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:59,443 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:59,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:18:59,443 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:59,443 INFO L82 PathProgramCache]: Analyzing trace with hash 154103829, now seen corresponding path program 1 times [2020-10-12 19:18:59,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:59,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565252602] [2020-10-12 19:18:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:04,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 19:19:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:19:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 19:19:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:19:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:19:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 19:19:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:19:04,955 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:19:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:04,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:04,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:04,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:19:04,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:05,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565252602] [2020-10-12 19:19:05,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:05,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:19:05,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765894160] [2020-10-12 19:19:05,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:19:05,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:05,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:19:05,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:19:05,016 INFO L87 Difference]: Start difference. First operand 16254 states and 27321 transitions. Second operand 8 states. [2020-10-12 19:19:05,447 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-12 19:19:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:14,281 INFO L93 Difference]: Finished difference Result 105084 states and 176334 transitions. [2020-10-12 19:19:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:19:14,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-10-12 19:19:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:14,507 INFO L225 Difference]: With dead ends: 105084 [2020-10-12 19:19:14,508 INFO L226 Difference]: Without dead ends: 89281 [2020-10-12 19:19:14,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:19:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89281 states. [2020-10-12 19:19:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89281 to 45341. [2020-10-12 19:19:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45341 states. [2020-10-12 19:19:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45341 states to 45341 states and 76006 transitions. [2020-10-12 19:19:17,842 INFO L78 Accepts]: Start accepts. Automaton has 45341 states and 76006 transitions. Word has length 119 [2020-10-12 19:19:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:17,842 INFO L479 AbstractCegarLoop]: Abstraction has 45341 states and 76006 transitions. [2020-10-12 19:19:17,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:19:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 45341 states and 76006 transitions. [2020-10-12 19:19:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 19:19:17,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:17,845 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:17,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:19:17,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507399, now seen corresponding path program 1 times [2020-10-12 19:19:17,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:17,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813986947] [2020-10-12 19:19:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 19:19:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:23,295 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:19:23,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:23,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:19:23,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:23,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813986947] [2020-10-12 19:19:23,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:23,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:19:23,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284761340] [2020-10-12 19:19:23,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:19:23,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:23,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:19:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:19:23,354 INFO L87 Difference]: Start difference. First operand 45341 states and 76006 transitions. Second operand 7 states. [2020-10-12 19:19:23,813 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:19:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:34,347 INFO L93 Difference]: Finished difference Result 146460 states and 245364 transitions. [2020-10-12 19:19:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:19:34,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-12 19:19:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:34,664 INFO L225 Difference]: With dead ends: 146460 [2020-10-12 19:19:34,664 INFO L226 Difference]: Without dead ends: 120383 [2020-10-12 19:19:34,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:19:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120383 states. [2020-10-12 19:19:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120383 to 73445. [2020-10-12 19:19:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73445 states. [2020-10-12 19:19:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73445 states to 73445 states and 123044 transitions. [2020-10-12 19:19:41,790 INFO L78 Accepts]: Start accepts. Automaton has 73445 states and 123044 transitions. Word has length 119 [2020-10-12 19:19:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:41,791 INFO L479 AbstractCegarLoop]: Abstraction has 73445 states and 123044 transitions. [2020-10-12 19:19:41,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:19:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 73445 states and 123044 transitions. [2020-10-12 19:19:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 19:19:41,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:41,793 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:41,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:19:41,794 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash -916770661, now seen corresponding path program 1 times [2020-10-12 19:19:41,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:41,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005380459] [2020-10-12 19:19:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:46,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 19:19:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:47,221 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:19:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:47,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:19:47,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:47,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:47,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005380459] [2020-10-12 19:19:47,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:47,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:19:47,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953332401] [2020-10-12 19:19:47,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:19:47,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:47,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:19:47,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:19:47,270 INFO L87 Difference]: Start difference. First operand 73445 states and 123044 transitions. Second operand 7 states. [2020-10-12 19:19:47,681 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:19:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:59,984 INFO L93 Difference]: Finished difference Result 166656 states and 279127 transitions. [2020-10-12 19:19:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:19:59,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-12 19:19:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:00,236 INFO L225 Difference]: With dead ends: 166656 [2020-10-12 19:20:00,236 INFO L226 Difference]: Without dead ends: 140579 [2020-10-12 19:20:00,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:20:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140579 states. [2020-10-12 19:20:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140579 to 92469. [2020-10-12 19:20:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92469 states. [2020-10-12 19:20:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92469 states to 92469 states and 154912 transitions. [2020-10-12 19:20:09,864 INFO L78 Accepts]: Start accepts. Automaton has 92469 states and 154912 transitions. Word has length 119 [2020-10-12 19:20:09,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:09,864 INFO L479 AbstractCegarLoop]: Abstraction has 92469 states and 154912 transitions. [2020-10-12 19:20:09,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:20:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 92469 states and 154912 transitions. [2020-10-12 19:20:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 19:20:09,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:09,868 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:09,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:20:09,868 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:09,869 INFO L82 PathProgramCache]: Analyzing trace with hash -712451688, now seen corresponding path program 1 times [2020-10-12 19:20:09,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:09,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516594448] [2020-10-12 19:20:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:14,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:20:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:15,433 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:20:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:15,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:20:15,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:15,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516594448] [2020-10-12 19:20:15,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:15,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:15,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710211713] [2020-10-12 19:20:15,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:15,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:15,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:15,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:15,514 INFO L87 Difference]: Start difference. First operand 92469 states and 154912 transitions. Second operand 5 states. [2020-10-12 19:20:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:32,004 INFO L93 Difference]: Finished difference Result 273300 states and 458169 transitions. [2020-10-12 19:20:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:32,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 19:20:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:32,307 INFO L225 Difference]: With dead ends: 273300 [2020-10-12 19:20:32,307 INFO L226 Difference]: Without dead ends: 180874 [2020-10-12 19:20:32,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180874 states. [2020-10-12 19:20:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180874 to 180872. [2020-10-12 19:20:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180872 states. [2020-10-12 19:20:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180872 states to 180872 states and 301734 transitions. [2020-10-12 19:20:49,918 INFO L78 Accepts]: Start accepts. Automaton has 180872 states and 301734 transitions. Word has length 119 [2020-10-12 19:20:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:49,918 INFO L479 AbstractCegarLoop]: Abstraction has 180872 states and 301734 transitions. [2020-10-12 19:20:49,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 180872 states and 301734 transitions. [2020-10-12 19:20:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:20:49,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:49,922 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:49,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:20:49,923 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1866040252, now seen corresponding path program 1 times [2020-10-12 19:20:49,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:49,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131900892] [2020-10-12 19:20:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:56,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:20:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:20:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6074 [2020-10-12 19:20:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:20:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:56,456 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-12 19:20:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:56,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:56,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:20:56,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:56,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131900892] [2020-10-12 19:20:56,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:56,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:56,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166158488] [2020-10-12 19:20:56,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:56,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:56,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:56,517 INFO L87 Difference]: Start difference. First operand 180872 states and 301734 transitions. Second operand 5 states. [2020-10-12 19:21:31,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:31,815 INFO L93 Difference]: Finished difference Result 534747 states and 892585 transitions. [2020-10-12 19:21:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:31,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 19:21:31,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:32,572 INFO L225 Difference]: With dead ends: 534747 [2020-10-12 19:21:32,573 INFO L226 Difference]: Without dead ends: 353888 [2020-10-12 19:21:32,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353888 states.