/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_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:36:56,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:36:56,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:36:56,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:36:56,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:36:56,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:36:56,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:36:56,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:36:56,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:36:56,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:36:56,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:36:56,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:36:56,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:36:56,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:36:56,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:36:56,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:36:56,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:36:56,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:36:56,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:36:56,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:36:56,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:36:56,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:36:56,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:36:56,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:36:56,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:36:56,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:36:56,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:36:56,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:36:56,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:36:56,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:36:56,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:36:56,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:36:56,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:36:56,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:36:56,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:36:56,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:36:56,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:36:56,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:36:56,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:36:56,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:36:56,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:36:56,580 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 19:36:56,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:36:56,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:36:56,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:36:56,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:36:56,604 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:36:56,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:36:56,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:36:56,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:36:56,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:36:56,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:36:56,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:36:56,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:36:56,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:36:56,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:36:56,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:36:56,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:36:56,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:36:56,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:36:56,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:36:56,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:36:56,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:36:56,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:36:56,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:36:56,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:36:56,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:36:56,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:36:56,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:36:56,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:36:56,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:36:56,608 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 19:36:56,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:36:56,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:36:56,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:36:56,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:36:56,938 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:36:56,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-12 19:36:56,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5bad38c5/8ba54bed208b4057ac35fc165fa17acb/FLAGd913139b7 [2020-10-12 19:36:57,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:36:57,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-12 19:36:57,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5bad38c5/8ba54bed208b4057ac35fc165fa17acb/FLAGd913139b7 [2020-10-12 19:36:57,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5bad38c5/8ba54bed208b4057ac35fc165fa17acb [2020-10-12 19:36:57,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:36:57,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:36:57,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:36:57,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:36:57,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:36:57,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:36:57" (1/1) ... [2020-10-12 19:36:57,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:57, skipping insertion in model container [2020-10-12 19:36:57,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:36:57" (1/1) ... [2020-10-12 19:36:57,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:36:57,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:36:58,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:36:58,587 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:36:58,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:36:58,766 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:36:58,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58 WrapperNode [2020-10-12 19:36:58,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:36:58,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:36:58,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:36:58,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:36:58,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (1/1) ... [2020-10-12 19:36:58,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:36:58,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:36:58,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:36:58,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:36:58,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (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 19:36:58,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:36:58,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:36:58,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:36:58,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:36:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:36:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:36:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:36:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:36:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:36:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:36:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:36:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:36:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:36:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:36:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:36:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:36:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:36:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:36:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:36:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:36:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:36:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:36:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:37:00,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:37:00,092 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:37:00,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:37:00 BoogieIcfgContainer [2020-10-12 19:37:00,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:37:00,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:37:00,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:37:00,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:37:00,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:36:57" (1/3) ... [2020-10-12 19:37:00,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71769e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:37:00, skipping insertion in model container [2020-10-12 19:37:00,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:58" (2/3) ... [2020-10-12 19:37:00,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71769e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:37:00, skipping insertion in model container [2020-10-12 19:37:00,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:37:00" (3/3) ... [2020-10-12 19:37:00,108 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-12 19:37:00,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:37:00,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:37:00,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:37:00,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:37:00,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:37:00,166 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:37:00,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:37:00,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:37:00,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:37:00,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:37:00,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:37:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states. [2020-10-12 19:37:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 19:37:00,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:00,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:00,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:00,216 INFO L82 PathProgramCache]: Analyzing trace with hash -463712918, now seen corresponding path program 1 times [2020-10-12 19:37:00,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:00,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123683231] [2020-10-12 19:37:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:00,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 19:37:05,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:37:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 19:37:05,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:37:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 19:37:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:37:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:37:05,809 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:05,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:05,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:05,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:05,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:37:05,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:05,868 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 19:37:05,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123683231] [2020-10-12 19:37:05,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:05,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:37:05,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067674807] [2020-10-12 19:37:05,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:37:05,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:05,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:37:05,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:37:05,895 INFO L87 Difference]: Start difference. First operand 341 states. Second operand 5 states. [2020-10-12 19:37:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:07,324 INFO L93 Difference]: Finished difference Result 529 states and 856 transitions. [2020-10-12 19:37:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:37:07,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-12 19:37:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:07,352 INFO L225 Difference]: With dead ends: 529 [2020-10-12 19:37:07,352 INFO L226 Difference]: Without dead ends: 337 [2020-10-12 19:37:07,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:37:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-12 19:37:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-10-12 19:37:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-12 19:37:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 545 transitions. [2020-10-12 19:37:07,425 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 545 transitions. Word has length 131 [2020-10-12 19:37:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:07,426 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 545 transitions. [2020-10-12 19:37:07,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:37:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 545 transitions. [2020-10-12 19:37:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 19:37:07,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:07,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:07,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:37:07,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1925434974, now seen corresponding path program 1 times [2020-10-12 19:37:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:07,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019313588] [2020-10-12 19:37:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:12,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 19:37:12,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:37:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:37:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:37:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:37:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:37:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:12,669 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:12,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:12,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:37:12,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:12,708 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 19:37:12,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019313588] [2020-10-12 19:37:12,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:12,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:37:12,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305376167] [2020-10-12 19:37:12,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:37:12,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:37:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:37:12,712 INFO L87 Difference]: Start difference. First operand 337 states and 545 transitions. Second operand 5 states. [2020-10-12 19:37:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:14,155 INFO L93 Difference]: Finished difference Result 637 states and 1022 transitions. [2020-10-12 19:37:14,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:37:14,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-12 19:37:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:14,161 INFO L225 Difference]: With dead ends: 637 [2020-10-12 19:37:14,161 INFO L226 Difference]: Without dead ends: 337 [2020-10-12 19:37:14,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:37:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-12 19:37:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-10-12 19:37:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-12 19:37:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 514 transitions. [2020-10-12 19:37:14,198 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 514 transitions. Word has length 133 [2020-10-12 19:37:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:14,199 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 514 transitions. [2020-10-12 19:37:14,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:37:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 514 transitions. [2020-10-12 19:37:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 19:37:14,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:14,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:14,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:37:14,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash -702361424, now seen corresponding path program 1 times [2020-10-12 19:37:14,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:14,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634514498] [2020-10-12 19:37:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:19,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 19:37:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:37:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:37:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:37:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:37:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:37:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:37:19,499 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:19,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:19,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:19,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:37:19,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:19,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:19,571 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 19:37:19,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634514498] [2020-10-12 19:37:19,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:19,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:37:19,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245392448] [2020-10-12 19:37:19,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:37:19,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:19,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:37:19,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:37:19,575 INFO L87 Difference]: Start difference. First operand 337 states and 514 transitions. Second operand 8 states. [2020-10-12 19:37:19,784 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 19:37:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:23,629 INFO L93 Difference]: Finished difference Result 2890 states and 4570 transitions. [2020-10-12 19:37:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:37:23,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-10-12 19:37:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:23,653 INFO L225 Difference]: With dead ends: 2890 [2020-10-12 19:37:23,655 INFO L226 Difference]: Without dead ends: 2644 [2020-10-12 19:37:23,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:37:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-10-12 19:37:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 621. [2020-10-12 19:37:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-12 19:37:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 960 transitions. [2020-10-12 19:37:23,785 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 960 transitions. Word has length 163 [2020-10-12 19:37:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:23,786 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 960 transitions. [2020-10-12 19:37:23,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:37:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 960 transitions. [2020-10-12 19:37:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 19:37:23,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:23,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:23,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:37:23,800 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash 292052647, now seen corresponding path program 1 times [2020-10-12 19:37:23,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:23,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160066788] [2020-10-12 19:37:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:28,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 19:37:28,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:37:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:37:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:37:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:37:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:37:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:29,083 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:29,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:29,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:29,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:37:29,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:29,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:37:29,189 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 19:37:29,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160066788] [2020-10-12 19:37:29,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:29,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:37:29,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072991705] [2020-10-12 19:37:29,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:37:29,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:37:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:37:29,197 INFO L87 Difference]: Start difference. First operand 621 states and 960 transitions. Second operand 8 states. [2020-10-12 19:37:29,471 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:37:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:32,374 INFO L93 Difference]: Finished difference Result 3873 states and 6082 transitions. [2020-10-12 19:37:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:37:32,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-10-12 19:37:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:32,394 INFO L225 Difference]: With dead ends: 3873 [2020-10-12 19:37:32,394 INFO L226 Difference]: Without dead ends: 3451 [2020-10-12 19:37:32,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:37:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2020-10-12 19:37:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 1292. [2020-10-12 19:37:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-12 19:37:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 2015 transitions. [2020-10-12 19:37:32,517 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 2015 transitions. Word has length 165 [2020-10-12 19:37:32,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:32,520 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 2015 transitions. [2020-10-12 19:37:32,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:37:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 2015 transitions. [2020-10-12 19:37:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 19:37:32,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:32,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:32,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:37:32,526 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:32,526 INFO L82 PathProgramCache]: Analyzing trace with hash 276243329, now seen corresponding path program 1 times [2020-10-12 19:37:32,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:32,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788697568] [2020-10-12 19:37:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:37,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 19:37:37,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:37:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:37:37,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:37:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:37:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:37:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:37,836 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:37,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:37,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:37:37,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:37,946 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 19:37:37,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788697568] [2020-10-12 19:37:37,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:37,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:37:37,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112275854] [2020-10-12 19:37:37,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:37:37,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:37,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:37:37,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:37:37,949 INFO L87 Difference]: Start difference. First operand 1292 states and 2015 transitions. Second operand 8 states. [2020-10-12 19:37:38,205 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:37:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:41,158 INFO L93 Difference]: Finished difference Result 5090 states and 7975 transitions. [2020-10-12 19:37:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:37:41,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2020-10-12 19:37:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:41,179 INFO L225 Difference]: With dead ends: 5090 [2020-10-12 19:37:41,180 INFO L226 Difference]: Without dead ends: 4070 [2020-10-12 19:37:41,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:37:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2020-10-12 19:37:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 1292. [2020-10-12 19:37:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-12 19:37:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 2008 transitions. [2020-10-12 19:37:41,309 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 2008 transitions. Word has length 167 [2020-10-12 19:37:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:41,310 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 2008 transitions. [2020-10-12 19:37:41,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:37:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 2008 transitions. [2020-10-12 19:37:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 19:37:41,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:41,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:41,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:37:41,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1131222240, now seen corresponding path program 1 times [2020-10-12 19:37:41,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:41,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873410182] [2020-10-12 19:37:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:46,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:46,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 19:37:46,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:37:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:37:46,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:37:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:37:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:37:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:46,521 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:46,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:46,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:46,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:46,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:46,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:37:46,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:37:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:37:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:46,584 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 19:37:46,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873410182] [2020-10-12 19:37:46,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:46,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:37:46,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640540782] [2020-10-12 19:37:46,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:37:46,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:46,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:37:46,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:37:46,587 INFO L87 Difference]: Start difference. First operand 1292 states and 2008 transitions. Second operand 6 states. [2020-10-12 19:37:46,768 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:37:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:48,501 INFO L93 Difference]: Finished difference Result 3739 states and 5849 transitions. [2020-10-12 19:37:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:37:48,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-12 19:37:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:48,513 INFO L225 Difference]: With dead ends: 3739 [2020-10-12 19:37:48,514 INFO L226 Difference]: Without dead ends: 2515 [2020-10-12 19:37:48,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:37:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2020-10-12 19:37:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2020-10-12 19:37:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2513 states. [2020-10-12 19:37:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3908 transitions. [2020-10-12 19:37:48,721 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3908 transitions. Word has length 167 [2020-10-12 19:37:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:48,722 INFO L479 AbstractCegarLoop]: Abstraction has 2513 states and 3908 transitions. [2020-10-12 19:37:48,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:37:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3908 transitions. [2020-10-12 19:37:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 19:37:48,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:48,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:48,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:37:48,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1002147956, now seen corresponding path program 1 times [2020-10-12 19:37:48,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:48,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570722958] [2020-10-12 19:37:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:53,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:37:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:54,108 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:37:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:54,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:37:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:37:54,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:54,164 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 19:37:54,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570722958] [2020-10-12 19:37:54,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:54,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:37:54,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216823427] [2020-10-12 19:37:54,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:37:54,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:54,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:37:54,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:37:54,166 INFO L87 Difference]: Start difference. First operand 2513 states and 3908 transitions. Second operand 11 states. [2020-10-12 19:37:54,371 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:38:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:01,002 INFO L93 Difference]: Finished difference Result 19255 states and 29882 transitions. [2020-10-12 19:38:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:38:01,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-12 19:38:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:01,063 INFO L225 Difference]: With dead ends: 19255 [2020-10-12 19:38:01,063 INFO L226 Difference]: Without dead ends: 17213 [2020-10-12 19:38:01,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:38:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17213 states. [2020-10-12 19:38:01,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17213 to 2706. [2020-10-12 19:38:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-10-12 19:38:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4199 transitions. [2020-10-12 19:38:01,539 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4199 transitions. Word has length 167 [2020-10-12 19:38:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:01,539 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 4199 transitions. [2020-10-12 19:38:01,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:38:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4199 transitions. [2020-10-12 19:38:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:38:01,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:01,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:01,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:38:01,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:01,548 INFO L82 PathProgramCache]: Analyzing trace with hash 867631615, now seen corresponding path program 1 times [2020-10-12 19:38:01,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:01,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728220938] [2020-10-12 19:38:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:06,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:06,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:38:06,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 19:38:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:38:06,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:38:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:38:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:38:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:06,880 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:38:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:06,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:38:06,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:38:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:38:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:06,967 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 19:38:06,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728220938] [2020-10-12 19:38:06,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:06,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:38:06,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445950793] [2020-10-12 19:38:06,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:38:06,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:06,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:38:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:38:06,969 INFO L87 Difference]: Start difference. First operand 2706 states and 4199 transitions. Second operand 11 states. [2020-10-12 19:38:07,169 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:38:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:13,177 INFO L93 Difference]: Finished difference Result 15998 states and 24827 transitions. [2020-10-12 19:38:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:38:13,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-12 19:38:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:13,206 INFO L225 Difference]: With dead ends: 15998 [2020-10-12 19:38:13,206 INFO L226 Difference]: Without dead ends: 14450 [2020-10-12 19:38:13,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=370, Invalid=1190, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:38:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14450 states. [2020-10-12 19:38:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 3123. [2020-10-12 19:38:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3123 states. [2020-10-12 19:38:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4829 transitions. [2020-10-12 19:38:13,720 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4829 transitions. Word has length 168 [2020-10-12 19:38:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:13,721 INFO L479 AbstractCegarLoop]: Abstraction has 3123 states and 4829 transitions. [2020-10-12 19:38:13,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:38:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4829 transitions. [2020-10-12 19:38:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:38:13,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:13,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:13,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:38:13,730 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:13,730 INFO L82 PathProgramCache]: Analyzing trace with hash 744651617, now seen corresponding path program 1 times [2020-10-12 19:38:13,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:13,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901540059] [2020-10-12 19:38:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:38:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:38:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:38:18,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:38:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:38:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:38:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:18,969 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:38:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:38:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:19,011 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 19:38:19,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901540059] [2020-10-12 19:38:19,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:19,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:38:19,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740978715] [2020-10-12 19:38:19,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:38:19,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:19,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:38:19,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:38:19,013 INFO L87 Difference]: Start difference. First operand 3123 states and 4829 transitions. Second operand 8 states. [2020-10-12 19:38:19,219 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:38:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:23,238 INFO L93 Difference]: Finished difference Result 11558 states and 17881 transitions. [2020-10-12 19:38:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:38:23,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-12 19:38:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:23,254 INFO L225 Difference]: With dead ends: 11558 [2020-10-12 19:38:23,254 INFO L226 Difference]: Without dead ends: 10283 [2020-10-12 19:38:23,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:38:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2020-10-12 19:38:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 4880. [2020-10-12 19:38:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4880 states. [2020-10-12 19:38:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 7537 transitions. [2020-10-12 19:38:23,987 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 7537 transitions. Word has length 168 [2020-10-12 19:38:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:23,987 INFO L479 AbstractCegarLoop]: Abstraction has 4880 states and 7537 transitions. [2020-10-12 19:38:23,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:38:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 7537 transitions. [2020-10-12 19:38:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:38:23,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:23,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:23,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:38:23,998 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1145094631, now seen corresponding path program 1 times [2020-10-12 19:38:23,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:23,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466375459] [2020-10-12 19:38:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:29,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:38:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:38:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:29,226 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:38:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:29,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:29,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:29,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:29,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:38:29,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:29,271 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 19:38:29,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466375459] [2020-10-12 19:38:29,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:29,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:38:29,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070403459] [2020-10-12 19:38:29,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:38:29,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:29,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:38:29,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:38:29,273 INFO L87 Difference]: Start difference. First operand 4880 states and 7537 transitions. Second operand 8 states. [2020-10-12 19:38:29,470 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:38:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:33,689 INFO L93 Difference]: Finished difference Result 12823 states and 19825 transitions. [2020-10-12 19:38:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:38:33,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-12 19:38:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:33,703 INFO L225 Difference]: With dead ends: 12823 [2020-10-12 19:38:33,703 INFO L226 Difference]: Without dead ends: 11548 [2020-10-12 19:38:33,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:38:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11548 states. [2020-10-12 19:38:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 6098. [2020-10-12 19:38:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6098 states. [2020-10-12 19:38:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 9422 transitions. [2020-10-12 19:38:34,516 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 9422 transitions. Word has length 168 [2020-10-12 19:38:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:34,516 INFO L479 AbstractCegarLoop]: Abstraction has 6098 states and 9422 transitions. [2020-10-12 19:38:34,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:38:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 9422 transitions. [2020-10-12 19:38:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:38:34,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:34,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:34,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:38:34,528 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1968443155, now seen corresponding path program 1 times [2020-10-12 19:38:34,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:34,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900211067] [2020-10-12 19:38:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:38:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:38:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:38:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:38:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:38:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:38:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:39,754 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:38:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:39,789 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 19:38:39,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900211067] [2020-10-12 19:38:39,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:39,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:38:39,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91253673] [2020-10-12 19:38:39,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:38:39,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:38:39,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:38:39,791 INFO L87 Difference]: Start difference. First operand 6098 states and 9422 transitions. Second operand 8 states. [2020-10-12 19:38:39,998 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:38:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:44,549 INFO L93 Difference]: Finished difference Result 14238 states and 22009 transitions. [2020-10-12 19:38:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:38:44,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-12 19:38:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:44,563 INFO L225 Difference]: With dead ends: 14238 [2020-10-12 19:38:44,563 INFO L226 Difference]: Without dead ends: 12963 [2020-10-12 19:38:44,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:38:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12963 states. [2020-10-12 19:38:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12963 to 7356. [2020-10-12 19:38:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7356 states. [2020-10-12 19:38:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 11371 transitions. [2020-10-12 19:38:45,492 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 11371 transitions. Word has length 168 [2020-10-12 19:38:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:45,493 INFO L479 AbstractCegarLoop]: Abstraction has 7356 states and 11371 transitions. [2020-10-12 19:38:45,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:38:45,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 11371 transitions. [2020-10-12 19:38:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:38:45,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:45,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:45,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:38:45,503 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:45,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:45,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1811771535, now seen corresponding path program 1 times [2020-10-12 19:38:45,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:45,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756933445] [2020-10-12 19:38:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:50,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:50,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:38:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:38:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:38:50,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:38:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:38:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:38:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:50,734 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:38:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:50,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:50,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:50,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:38:50,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:50,770 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 19:38:50,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756933445] [2020-10-12 19:38:50,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:50,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:38:50,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537216009] [2020-10-12 19:38:50,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:38:50,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:50,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:38:50,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:38:50,772 INFO L87 Difference]: Start difference. First operand 7356 states and 11371 transitions. Second operand 8 states. [2020-10-12 19:38:50,993 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:38:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:55,331 INFO L93 Difference]: Finished difference Result 15743 states and 24348 transitions. [2020-10-12 19:38:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:38:55,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-12 19:38:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:55,347 INFO L225 Difference]: With dead ends: 15743 [2020-10-12 19:38:55,347 INFO L226 Difference]: Without dead ends: 14509 [2020-10-12 19:38:55,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:38:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14509 states. [2020-10-12 19:38:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 8459. [2020-10-12 19:38:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8459 states. [2020-10-12 19:38:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 13085 transitions. [2020-10-12 19:38:56,336 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 13085 transitions. Word has length 168 [2020-10-12 19:38:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:56,336 INFO L479 AbstractCegarLoop]: Abstraction has 8459 states and 13085 transitions. [2020-10-12 19:38:56,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:38:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 13085 transitions. [2020-10-12 19:38:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:38:56,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:56,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:56,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:38:56,347 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:56,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:56,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1064202840, now seen corresponding path program 1 times [2020-10-12 19:38:56,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:56,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053767016] [2020-10-12 19:38:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:01,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:01,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:39:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:39:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:39:01,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:39:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:39:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 19:39:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:01,591 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:39:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:01,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:01,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:01,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:39:01,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:01,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:01,641 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 19:39:01,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053767016] [2020-10-12 19:39:01,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:01,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:39:01,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548614950] [2020-10-12 19:39:01,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:39:01,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:39:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:39:01,643 INFO L87 Difference]: Start difference. First operand 8459 states and 13085 transitions. Second operand 8 states. [2020-10-12 19:39:01,835 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:39:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:06,364 INFO L93 Difference]: Finished difference Result 15171 states and 23496 transitions. [2020-10-12 19:39:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 19:39:06,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-10-12 19:39:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:06,376 INFO L225 Difference]: With dead ends: 15171 [2020-10-12 19:39:06,377 INFO L226 Difference]: Without dead ends: 13573 [2020-10-12 19:39:06,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:39:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13573 states. [2020-10-12 19:39:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13573 to 13559. [2020-10-12 19:39:07,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13559 states. [2020-10-12 19:39:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 20949 transitions. [2020-10-12 19:39:07,883 INFO L78 Accepts]: Start accepts. Automaton has 13559 states and 20949 transitions. Word has length 170 [2020-10-12 19:39:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:07,883 INFO L479 AbstractCegarLoop]: Abstraction has 13559 states and 20949 transitions. [2020-10-12 19:39:07,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:39:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13559 states and 20949 transitions. [2020-10-12 19:39:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:39:07,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:07,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:07,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:39:07,900 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:07,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1335993361, now seen corresponding path program 1 times [2020-10-12 19:39:07,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:07,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239871897] [2020-10-12 19:39:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:07,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:09,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:12,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 19:39:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:13,223 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:39:13,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:39:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:39:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:39:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:13,284 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 19:39:13,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239871897] [2020-10-12 19:39:13,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:13,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:39:13,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578120354] [2020-10-12 19:39:13,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:39:13,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:13,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:39:13,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:39:13,287 INFO L87 Difference]: Start difference. First operand 13559 states and 20949 transitions. Second operand 8 states. [2020-10-12 19:39:13,459 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:39:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:23,306 INFO L93 Difference]: Finished difference Result 69197 states and 106667 transitions. [2020-10-12 19:39:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:39:23,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-10-12 19:39:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:23,355 INFO L225 Difference]: With dead ends: 69197 [2020-10-12 19:39:23,355 INFO L226 Difference]: Without dead ends: 56570 [2020-10-12 19:39:23,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:39:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56570 states. [2020-10-12 19:39:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56570 to 15858. [2020-10-12 19:39:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15858 states. [2020-10-12 19:39:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15858 states to 15858 states and 24146 transitions. [2020-10-12 19:39:25,512 INFO L78 Accepts]: Start accepts. Automaton has 15858 states and 24146 transitions. Word has length 170 [2020-10-12 19:39:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:25,512 INFO L479 AbstractCegarLoop]: Abstraction has 15858 states and 24146 transitions. [2020-10-12 19:39:25,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:39:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 15858 states and 24146 transitions. [2020-10-12 19:39:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:39:25,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:25,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:25,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:39:25,533 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1924845908, now seen corresponding path program 1 times [2020-10-12 19:39:25,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:25,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42812662] [2020-10-12 19:39:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:30,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:39:30,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:30,880 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:39:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:30,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:30,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:30,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:39:30,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:30,931 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 19:39:30,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42812662] [2020-10-12 19:39:30,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:30,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:39:30,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731936264] [2020-10-12 19:39:30,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:39:30,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:30,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:39:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:39:30,933 INFO L87 Difference]: Start difference. First operand 15858 states and 24146 transitions. Second operand 10 states. [2020-10-12 19:39:31,118 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:39:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:43,205 INFO L93 Difference]: Finished difference Result 60142 states and 92312 transitions. [2020-10-12 19:39:43,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:39:43,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-10-12 19:39:43,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:43,256 INFO L225 Difference]: With dead ends: 60142 [2020-10-12 19:39:43,256 INFO L226 Difference]: Without dead ends: 55972 [2020-10-12 19:39:43,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:39:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55972 states. [2020-10-12 19:39:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55972 to 15936. [2020-10-12 19:39:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15936 states. [2020-10-12 19:39:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15936 states to 15936 states and 24263 transitions. [2020-10-12 19:39:46,651 INFO L78 Accepts]: Start accepts. Automaton has 15936 states and 24263 transitions. Word has length 170 [2020-10-12 19:39:46,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:46,651 INFO L479 AbstractCegarLoop]: Abstraction has 15936 states and 24263 transitions. [2020-10-12 19:39:46,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:39:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 15936 states and 24263 transitions. [2020-10-12 19:39:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:39:46,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:46,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:46,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:39:46,665 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:46,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:46,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1498048436, now seen corresponding path program 1 times [2020-10-12 19:39:46,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:46,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758953469] [2020-10-12 19:39:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:51,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:51,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:39:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:39:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-12 19:39:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:39:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:39:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:52,113 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:39:52,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:52,156 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 19:39:52,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758953469] [2020-10-12 19:39:52,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:52,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:39:52,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741335027] [2020-10-12 19:39:52,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:39:52,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:52,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:39:52,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:39:52,158 INFO L87 Difference]: Start difference. First operand 15936 states and 24263 transitions. Second operand 10 states. [2020-10-12 19:39:52,350 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:40:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:11,848 INFO L93 Difference]: Finished difference Result 93375 states and 142574 transitions. [2020-10-12 19:40:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:40:11,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-10-12 19:40:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:11,927 INFO L225 Difference]: With dead ends: 93375 [2020-10-12 19:40:11,927 INFO L226 Difference]: Without dead ends: 87413 [2020-10-12 19:40:11,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:40:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87413 states. [2020-10-12 19:40:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87413 to 16106. [2020-10-12 19:40:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16106 states. [2020-10-12 19:40:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16106 states to 16106 states and 24518 transitions. [2020-10-12 19:40:15,220 INFO L78 Accepts]: Start accepts. Automaton has 16106 states and 24518 transitions. Word has length 170 [2020-10-12 19:40:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:15,220 INFO L479 AbstractCegarLoop]: Abstraction has 16106 states and 24518 transitions. [2020-10-12 19:40:15,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:40:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 16106 states and 24518 transitions. [2020-10-12 19:40:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:40:15,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:15,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:15,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:40:15,235 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:15,235 INFO L82 PathProgramCache]: Analyzing trace with hash -247916017, now seen corresponding path program 1 times [2020-10-12 19:40:15,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:15,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644306456] [2020-10-12 19:40:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:40:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:40:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:20,639 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:40:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:20,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:20,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:40:20,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:40:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:40:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:20,691 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 19:40:20,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644306456] [2020-10-12 19:40:20,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:20,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:40:20,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453019509] [2020-10-12 19:40:20,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:40:20,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:20,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:40:20,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:40:20,693 INFO L87 Difference]: Start difference. First operand 16106 states and 24518 transitions. Second operand 7 states. [2020-10-12 19:40:20,868 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:40:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:26,969 INFO L93 Difference]: Finished difference Result 37505 states and 57203 transitions. [2020-10-12 19:40:26,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:40:26,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-12 19:40:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:26,991 INFO L225 Difference]: With dead ends: 37505 [2020-10-12 19:40:26,991 INFO L226 Difference]: Without dead ends: 21488 [2020-10-12 19:40:27,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:40:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21488 states. [2020-10-12 19:40:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21488 to 14931. [2020-10-12 19:40:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14931 states. [2020-10-12 19:40:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14931 states to 14931 states and 22741 transitions. [2020-10-12 19:40:29,875 INFO L78 Accepts]: Start accepts. Automaton has 14931 states and 22741 transitions. Word has length 171 [2020-10-12 19:40:29,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:29,875 INFO L479 AbstractCegarLoop]: Abstraction has 14931 states and 22741 transitions. [2020-10-12 19:40:29,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:40:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14931 states and 22741 transitions. [2020-10-12 19:40:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:40:29,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:29,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:29,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:40:29,894 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:29,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:29,894 INFO L82 PathProgramCache]: Analyzing trace with hash -325710599, now seen corresponding path program 1 times [2020-10-12 19:40:29,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:29,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147534734] [2020-10-12 19:40:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:34,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:34,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:40:34,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:40:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:40:34,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:40:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:40:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:40:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:35,205 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:40:35,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:35,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:35,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:40:35,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:40:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:40:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:35,271 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 19:40:35,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147534734] [2020-10-12 19:40:35,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:35,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:40:35,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565178758] [2020-10-12 19:40:35,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:40:35,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:35,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:40:35,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:40:35,273 INFO L87 Difference]: Start difference. First operand 14931 states and 22741 transitions. Second operand 10 states. [2020-10-12 19:40:35,465 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 19:40:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:47,045 INFO L93 Difference]: Finished difference Result 47457 states and 72703 transitions. [2020-10-12 19:40:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:40:47,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-10-12 19:40:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:47,077 INFO L225 Difference]: With dead ends: 47457 [2020-10-12 19:40:47,077 INFO L226 Difference]: Without dead ends: 34843 [2020-10-12 19:40:47,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:40:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34843 states.