/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_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:19:52,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:19:52,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:19:52,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:19:52,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:19:52,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:19:52,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:19:52,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:19:52,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:19:52,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:19:52,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:19:52,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:19:52,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:19:52,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:19:52,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:19:52,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:19:52,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:19:52,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:19:52,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:19:52,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:19:52,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:19:52,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:19:52,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:19:52,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:19:52,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:19:52,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:19:52,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:19:52,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:19:52,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:19:52,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:19:52,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:19:52,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:19:52,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:19:52,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:19:52,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:19:52,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:19:52,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:19:52,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:19:52,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:19:52,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:19:52,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:19:52,639 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 20:19:52,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:19:52,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:19:52,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:19:52,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:19:52,677 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:19:52,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:19:52,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:19:52,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:19:52,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:19:52,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:19:52,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:19:52,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:19:52,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:19:52,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:19:52,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:19:52,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:19:52,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:19:52,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:19:52,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:19:52,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:19:52,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:19:52,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:19:52,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:19:52,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:19:52,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:19:52,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:19:52,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:19:52,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:19:52,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:19:52,683 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 20:19:52,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:19:53,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:19:53,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:19:53,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:19:53,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:19:53,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:19:53,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0bf70d5/04e7b07eb787414ea308c773887ab41d/FLAG570d67c7b [2020-10-12 20:19:53,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:19:53,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:19:53,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0bf70d5/04e7b07eb787414ea308c773887ab41d/FLAG570d67c7b [2020-10-12 20:19:53,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0bf70d5/04e7b07eb787414ea308c773887ab41d [2020-10-12 20:19:53,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:19:53,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:19:53,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:19:53,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:19:53,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:19:53,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:53" (1/1) ... [2020-10-12 20:19:53,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3fa750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:53, skipping insertion in model container [2020-10-12 20:19:53,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:53" (1/1) ... [2020-10-12 20:19:53,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:19:53,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:19:54,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:19:54,583 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:19:55,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:19:55,085 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:19:55,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55 WrapperNode [2020-10-12 20:19:55,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:19:55,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:19:55,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:19:55,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:19:55,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (1/1) ... [2020-10-12 20:19:55,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:19:55,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:19:55,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:19:55,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:19:55,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (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 20:19:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:19:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:19:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:19:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:19:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:19:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:19:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:19:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:19:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:19:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:19:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:19:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:19:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:19:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:19:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:19:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:19:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:19:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:19:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:19:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:19:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:19:56,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:19:56,849 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:19:56,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:56 BoogieIcfgContainer [2020-10-12 20:19:56,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:19:56,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:19:56,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:19:56,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:19:56,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:19:53" (1/3) ... [2020-10-12 20:19:56,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20738be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:56, skipping insertion in model container [2020-10-12 20:19:56,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:55" (2/3) ... [2020-10-12 20:19:56,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20738be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:56, skipping insertion in model container [2020-10-12 20:19:56,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:56" (3/3) ... [2020-10-12 20:19:56,865 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:19:56,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:19:56,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 20:19:56,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 20:19:56,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:19:56,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:19:56,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:19:56,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:19:56,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:19:56,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:19:56,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:19:56,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:19:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states. [2020-10-12 20:19:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:19:56,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:56,970 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] [2020-10-12 20:19:56,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 404543540, now seen corresponding path program 1 times [2020-10-12 20:19:56,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:56,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900824778] [2020-10-12 20:19:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:59,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 20:20:02,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:20:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 20:20:02,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:20:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:20:03,156 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:03,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:03,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:03,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:20:03,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:03,253 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 20:20:03,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900824778] [2020-10-12 20:20:03,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:03,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:03,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016963588] [2020-10-12 20:20:03,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:03,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:03,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:03,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:03,282 INFO L87 Difference]: Start difference. First operand 429 states. Second operand 5 states. [2020-10-12 20:20:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:07,147 INFO L93 Difference]: Finished difference Result 1244 states and 2210 transitions. [2020-10-12 20:20:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:20:07,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:20:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:07,181 INFO L225 Difference]: With dead ends: 1244 [2020-10-12 20:20:07,182 INFO L226 Difference]: Without dead ends: 818 [2020-10-12 20:20:07,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-12 20:20:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 795. [2020-10-12 20:20:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-12 20:20:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1134 transitions. [2020-10-12 20:20:07,316 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1134 transitions. Word has length 154 [2020-10-12 20:20:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:07,317 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1134 transitions. [2020-10-12 20:20:07,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1134 transitions. [2020-10-12 20:20:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 20:20:07,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:07,333 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] [2020-10-12 20:20:07,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:20:07,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1930730273, now seen corresponding path program 1 times [2020-10-12 20:20:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:07,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734394432] [2020-10-12 20:20:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:12,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:12,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 20:20:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:20:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:20:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:20:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:12,714 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:12,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:12,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:12,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:12,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:20:12,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:12,825 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 20:20:12,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734394432] [2020-10-12 20:20:12,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:12,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:12,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096139781] [2020-10-12 20:20:12,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:12,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:12,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:12,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:12,831 INFO L87 Difference]: Start difference. First operand 795 states and 1134 transitions. Second operand 5 states. [2020-10-12 20:20:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:15,638 INFO L93 Difference]: Finished difference Result 2276 states and 3223 transitions. [2020-10-12 20:20:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:15,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 20:20:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:15,648 INFO L225 Difference]: With dead ends: 2276 [2020-10-12 20:20:15,648 INFO L226 Difference]: Without dead ends: 1522 [2020-10-12 20:20:15,652 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 20:20:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2020-10-12 20:20:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1492. [2020-10-12 20:20:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-10-12 20:20:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2107 transitions. [2020-10-12 20:20:15,740 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2107 transitions. Word has length 155 [2020-10-12 20:20:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:15,740 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 2107 transitions. [2020-10-12 20:20:15,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2107 transitions. [2020-10-12 20:20:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:20:15,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:15,745 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] [2020-10-12 20:20:15,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:20:15,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:15,747 INFO L82 PathProgramCache]: Analyzing trace with hash 973020696, now seen corresponding path program 1 times [2020-10-12 20:20:15,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:15,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029139301] [2020-10-12 20:20:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:16,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:20,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:20,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 20:20:20,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:20:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:20:20,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:20:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:21,159 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:21,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:21,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:21,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:21,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:20:21,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:21,249 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 20:20:21,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029139301] [2020-10-12 20:20:21,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:21,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:21,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230363469] [2020-10-12 20:20:21,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:21,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:21,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:21,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:21,253 INFO L87 Difference]: Start difference. First operand 1492 states and 2107 transitions. Second operand 5 states. [2020-10-12 20:20:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:24,724 INFO L93 Difference]: Finished difference Result 4319 states and 6070 transitions. [2020-10-12 20:20:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:24,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:20:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:24,738 INFO L225 Difference]: With dead ends: 4319 [2020-10-12 20:20:24,738 INFO L226 Difference]: Without dead ends: 2874 [2020-10-12 20:20:24,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-10-12 20:20:24,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2844. [2020-10-12 20:20:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2020-10-12 20:20:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3976 transitions. [2020-10-12 20:20:24,884 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3976 transitions. Word has length 156 [2020-10-12 20:20:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:24,885 INFO L479 AbstractCegarLoop]: Abstraction has 2844 states and 3976 transitions. [2020-10-12 20:20:24,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3976 transitions. [2020-10-12 20:20:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:20:24,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:24,892 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] [2020-10-12 20:20:24,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:20:24,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:24,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1475648096, now seen corresponding path program 1 times [2020-10-12 20:20:24,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:24,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104719414] [2020-10-12 20:20:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:24,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:29,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:29,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:20:29,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:20:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:20:29,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 20:20:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:30,337 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:30,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:30,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:30,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:30,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:20:30,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:30,432 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 20:20:30,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104719414] [2020-10-12 20:20:30,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:30,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:30,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199649564] [2020-10-12 20:20:30,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:30,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:30,437 INFO L87 Difference]: Start difference. First operand 2844 states and 3976 transitions. Second operand 5 states. [2020-10-12 20:20:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:34,007 INFO L93 Difference]: Finished difference Result 8017 states and 11229 transitions. [2020-10-12 20:20:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:34,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 20:20:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:34,034 INFO L225 Difference]: With dead ends: 8017 [2020-10-12 20:20:34,034 INFO L226 Difference]: Without dead ends: 5503 [2020-10-12 20:20:34,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2020-10-12 20:20:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 5473. [2020-10-12 20:20:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5473 states. [2020-10-12 20:20:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7563 transitions. [2020-10-12 20:20:34,317 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7563 transitions. Word has length 157 [2020-10-12 20:20:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:34,317 INFO L479 AbstractCegarLoop]: Abstraction has 5473 states and 7563 transitions. [2020-10-12 20:20:34,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7563 transitions. [2020-10-12 20:20:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 20:20:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:34,330 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] [2020-10-12 20:20:34,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:20:34,330 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash -795192586, now seen corresponding path program 1 times [2020-10-12 20:20:34,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:34,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602392456] [2020-10-12 20:20:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:20:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:20:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:20:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:20:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:39,696 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:39,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:39,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:39,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:39,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:20:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:39,763 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 20:20:39,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602392456] [2020-10-12 20:20:39,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:39,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:39,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617457135] [2020-10-12 20:20:39,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:39,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:39,769 INFO L87 Difference]: Start difference. First operand 5473 states and 7563 transitions. Second operand 5 states. [2020-10-12 20:20:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:43,163 INFO L93 Difference]: Finished difference Result 15327 states and 21198 transitions. [2020-10-12 20:20:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:43,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 20:20:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:43,207 INFO L225 Difference]: With dead ends: 15327 [2020-10-12 20:20:43,207 INFO L226 Difference]: Without dead ends: 10593 [2020-10-12 20:20:43,220 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 20:20:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2020-10-12 20:20:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 10563. [2020-10-12 20:20:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10563 states. [2020-10-12 20:20:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10563 states to 10563 states and 14414 transitions. [2020-10-12 20:20:43,791 INFO L78 Accepts]: Start accepts. Automaton has 10563 states and 14414 transitions. Word has length 158 [2020-10-12 20:20:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:43,792 INFO L479 AbstractCegarLoop]: Abstraction has 10563 states and 14414 transitions. [2020-10-12 20:20:43,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10563 states and 14414 transitions. [2020-10-12 20:20:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:20:43,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:43,810 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] [2020-10-12 20:20:43,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:20:43,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -674971264, now seen corresponding path program 1 times [2020-10-12 20:20:43,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:43,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472163733] [2020-10-12 20:20:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:44,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:20:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:49,119 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:49,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:49,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:20:49,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:49,163 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 20:20:49,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472163733] [2020-10-12 20:20:49,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:49,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:49,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982075230] [2020-10-12 20:20:49,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:49,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:49,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:49,166 INFO L87 Difference]: Start difference. First operand 10563 states and 14414 transitions. Second operand 5 states. [2020-10-12 20:20:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:51,167 INFO L93 Difference]: Finished difference Result 17187 states and 23467 transitions. [2020-10-12 20:20:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:51,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 20:20:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:51,194 INFO L225 Difference]: With dead ends: 17187 [2020-10-12 20:20:51,195 INFO L226 Difference]: Without dead ends: 6802 [2020-10-12 20:20:51,214 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 20:20:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6802 states. [2020-10-12 20:20:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6802 to 6802. [2020-10-12 20:20:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6802 states. [2020-10-12 20:20:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6802 states to 6802 states and 9260 transitions. [2020-10-12 20:20:51,488 INFO L78 Accepts]: Start accepts. Automaton has 6802 states and 9260 transitions. Word has length 159 [2020-10-12 20:20:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:51,489 INFO L479 AbstractCegarLoop]: Abstraction has 6802 states and 9260 transitions. [2020-10-12 20:20:51,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6802 states and 9260 transitions. [2020-10-12 20:20:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 20:20:51,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:51,501 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] [2020-10-12 20:20:51,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:20:51,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 323341847, now seen corresponding path program 1 times [2020-10-12 20:20:51,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:51,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694017103] [2020-10-12 20:20:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:56,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:56,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 20:20:56,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:20:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:20:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:20:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:20:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 20:20:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:57,021 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:57,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:57,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:57,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 20:20:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:20:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:20:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:57,180 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 20:20:57,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694017103] [2020-10-12 20:20:57,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:57,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:20:57,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830376402] [2020-10-12 20:20:57,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:20:57,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:57,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:20:57,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:20:57,185 INFO L87 Difference]: Start difference. First operand 6802 states and 9260 transitions. Second operand 9 states. [2020-10-12 20:20:57,506 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:00,765 INFO L93 Difference]: Finished difference Result 22824 states and 32440 transitions. [2020-10-12 20:21:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:21:00,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-10-12 20:21:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:00,801 INFO L225 Difference]: With dead ends: 22824 [2020-10-12 20:21:00,802 INFO L226 Difference]: Without dead ends: 17172 [2020-10-12 20:21:00,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:21:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17172 states. [2020-10-12 20:21:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17172 to 10082. [2020-10-12 20:21:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10082 states. [2020-10-12 20:21:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10082 states to 10082 states and 13770 transitions. [2020-10-12 20:21:01,308 INFO L78 Accepts]: Start accepts. Automaton has 10082 states and 13770 transitions. Word has length 162 [2020-10-12 20:21:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:01,309 INFO L479 AbstractCegarLoop]: Abstraction has 10082 states and 13770 transitions. [2020-10-12 20:21:01,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:21:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 10082 states and 13770 transitions. [2020-10-12 20:21:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 20:21:01,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:01,320 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] [2020-10-12 20:21:01,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:21:01,321 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:01,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2105140610, now seen corresponding path program 1 times [2020-10-12 20:21:01,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:01,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311328903] [2020-10-12 20:21:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:06,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:06,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 20:21:06,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:21:06,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:21:06,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 20:21:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:21:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:06,611 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:06,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:06,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:21:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:06,655 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 20:21:06,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311328903] [2020-10-12 20:21:06,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:06,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:06,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510433219] [2020-10-12 20:21:06,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:06,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:06,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:06,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:06,657 INFO L87 Difference]: Start difference. First operand 10082 states and 13770 transitions. Second operand 5 states. [2020-10-12 20:21:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:08,513 INFO L93 Difference]: Finished difference Result 16194 states and 22182 transitions. [2020-10-12 20:21:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:08,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-12 20:21:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:08,531 INFO L225 Difference]: With dead ends: 16194 [2020-10-12 20:21:08,531 INFO L226 Difference]: Without dead ends: 6710 [2020-10-12 20:21:08,548 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 20:21:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2020-10-12 20:21:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6704. [2020-10-12 20:21:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6704 states. [2020-10-12 20:21:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6704 states to 6704 states and 9132 transitions. [2020-10-12 20:21:09,047 INFO L78 Accepts]: Start accepts. Automaton has 6704 states and 9132 transitions. Word has length 162 [2020-10-12 20:21:09,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:09,047 INFO L479 AbstractCegarLoop]: Abstraction has 6704 states and 9132 transitions. [2020-10-12 20:21:09,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6704 states and 9132 transitions. [2020-10-12 20:21:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:21:09,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:09,055 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] [2020-10-12 20:21:09,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:21:09,055 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:09,055 INFO L82 PathProgramCache]: Analyzing trace with hash 227265748, now seen corresponding path program 1 times [2020-10-12 20:21:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:09,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236073147] [2020-10-12 20:21:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:21:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:21:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:21:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 20:21:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:21:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:14,352 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:14,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:14,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:14,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:21:14,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:14,396 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 20:21:14,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236073147] [2020-10-12 20:21:14,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:14,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:14,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623568297] [2020-10-12 20:21:14,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:14,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:14,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:14,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:14,398 INFO L87 Difference]: Start difference. First operand 6704 states and 9132 transitions. Second operand 5 states. [2020-10-12 20:21:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:16,260 INFO L93 Difference]: Finished difference Result 13333 states and 18154 transitions. [2020-10-12 20:21:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:16,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-12 20:21:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:16,272 INFO L225 Difference]: With dead ends: 13333 [2020-10-12 20:21:16,273 INFO L226 Difference]: Without dead ends: 6689 [2020-10-12 20:21:16,284 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 20:21:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2020-10-12 20:21:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 6689. [2020-10-12 20:21:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6689 states. [2020-10-12 20:21:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6689 states to 6689 states and 9102 transitions. [2020-10-12 20:21:16,642 INFO L78 Accepts]: Start accepts. Automaton has 6689 states and 9102 transitions. Word has length 166 [2020-10-12 20:21:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:16,642 INFO L479 AbstractCegarLoop]: Abstraction has 6689 states and 9102 transitions. [2020-10-12 20:21:16,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6689 states and 9102 transitions. [2020-10-12 20:21:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 20:21:16,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:16,650 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 20:21:16,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:21:16,650 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:16,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1322147073, now seen corresponding path program 1 times [2020-10-12 20:21:16,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:16,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644233520] [2020-10-12 20:21:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:17,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 20:21:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:21,943 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:21,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:21,982 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 20:21:21,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644233520] [2020-10-12 20:21:21,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:21,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:21,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905983756] [2020-10-12 20:21:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:21,985 INFO L87 Difference]: Start difference. First operand 6689 states and 9102 transitions. Second operand 5 states. [2020-10-12 20:21:22,239 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 20:21:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:25,187 INFO L93 Difference]: Finished difference Result 12255 states and 16710 transitions. [2020-10-12 20:21:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:21:25,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-12 20:21:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:25,198 INFO L225 Difference]: With dead ends: 12255 [2020-10-12 20:21:25,198 INFO L226 Difference]: Without dead ends: 6716 [2020-10-12 20:21:25,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:21:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2020-10-12 20:21:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6689. [2020-10-12 20:21:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6689 states. [2020-10-12 20:21:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6689 states to 6689 states and 9080 transitions. [2020-10-12 20:21:25,569 INFO L78 Accepts]: Start accepts. Automaton has 6689 states and 9080 transitions. Word has length 167 [2020-10-12 20:21:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:25,570 INFO L479 AbstractCegarLoop]: Abstraction has 6689 states and 9080 transitions. [2020-10-12 20:21:25,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6689 states and 9080 transitions. [2020-10-12 20:21:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 20:21:25,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:25,575 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 20:21:25,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:21:25,575 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:25,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1286715257, now seen corresponding path program 1 times [2020-10-12 20:21:25,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:25,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371200041] [2020-10-12 20:21:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:25,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:25,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:30,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 20:21:30,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:21:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:21:30,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:21:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 20:21:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 20:21:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:21:30,969 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:30,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:31,009 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 20:21:31,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371200041] [2020-10-12 20:21:31,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:31,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:21:31,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947801484] [2020-10-12 20:21:31,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:21:31,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:31,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:21:31,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:21:31,011 INFO L87 Difference]: Start difference. First operand 6689 states and 9080 transitions. Second operand 10 states. [2020-10-12 20:21:31,301 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 20:21:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:35,758 INFO L93 Difference]: Finished difference Result 27913 states and 39010 transitions. [2020-10-12 20:21:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:21:35,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-10-12 20:21:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:35,786 INFO L225 Difference]: With dead ends: 27913 [2020-10-12 20:21:35,786 INFO L226 Difference]: Without dead ends: 23574 [2020-10-12 20:21:35,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-12 20:21:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23574 states. [2020-10-12 20:21:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23574 to 14156. [2020-10-12 20:21:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14156 states. [2020-10-12 20:21:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14156 states to 14156 states and 19423 transitions. [2020-10-12 20:21:36,659 INFO L78 Accepts]: Start accepts. Automaton has 14156 states and 19423 transitions. Word has length 168 [2020-10-12 20:21:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:36,660 INFO L479 AbstractCegarLoop]: Abstraction has 14156 states and 19423 transitions. [2020-10-12 20:21:36,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:21:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 14156 states and 19423 transitions. [2020-10-12 20:21:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 20:21:36,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:36,669 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 20:21:36,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:21:36,669 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:36,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1887321747, now seen corresponding path program 1 times [2020-10-12 20:21:36,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:36,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962802957] [2020-10-12 20:21:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:40,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 20:21:40,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:21:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3458 [2020-10-12 20:21:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:21:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:40,434 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:40,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:21:40,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:40,488 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 20:21:40,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962802957] [2020-10-12 20:21:40,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:40,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:40,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46679760] [2020-10-12 20:21:40,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:40,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:40,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:40,490 INFO L87 Difference]: Start difference. First operand 14156 states and 19423 transitions. Second operand 5 states. [2020-10-12 20:21:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:44,477 INFO L93 Difference]: Finished difference Result 36281 states and 49678 transitions. [2020-10-12 20:21:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:44,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-12 20:21:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:44,504 INFO L225 Difference]: With dead ends: 36281 [2020-10-12 20:21:44,505 INFO L226 Difference]: Without dead ends: 22247 [2020-10-12 20:21:44,529 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 20:21:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22247 states. [2020-10-12 20:21:46,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22247 to 22225. [2020-10-12 20:21:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22225 states. [2020-10-12 20:21:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 30099 transitions. [2020-10-12 20:21:46,603 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 30099 transitions. Word has length 168 [2020-10-12 20:21:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:46,604 INFO L479 AbstractCegarLoop]: Abstraction has 22225 states and 30099 transitions. [2020-10-12 20:21:46,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 30099 transitions. [2020-10-12 20:21:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:21:46,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:46,619 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 20:21:46,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:21:46,620 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:46,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:46,620 INFO L82 PathProgramCache]: Analyzing trace with hash 236172777, now seen corresponding path program 1 times [2020-10-12 20:21:46,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:46,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365382382] [2020-10-12 20:21:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:21:51,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:21:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:21:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:21:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:21:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:21:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:51,959 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:51,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:21:51,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:52,023 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 20:21:52,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365382382] [2020-10-12 20:21:52,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:52,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:21:52,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693090394] [2020-10-12 20:21:52,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:21:52,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:52,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:21:52,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:21:52,025 INFO L87 Difference]: Start difference. First operand 22225 states and 30099 transitions. Second operand 9 states. [2020-10-12 20:21:52,311 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:57,903 INFO L93 Difference]: Finished difference Result 70853 states and 97826 transitions. [2020-10-12 20:21:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:21:57,904 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-10-12 20:21:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:58,115 INFO L225 Difference]: With dead ends: 70853 [2020-10-12 20:21:58,116 INFO L226 Difference]: Without dead ends: 50705 [2020-10-12 20:21:58,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:21:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50705 states. [2020-10-12 20:22:00,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50705 to 34507. [2020-10-12 20:22:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34507 states. [2020-10-12 20:22:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34507 states to 34507 states and 46382 transitions. [2020-10-12 20:22:00,298 INFO L78 Accepts]: Start accepts. Automaton has 34507 states and 46382 transitions. Word has length 171 [2020-10-12 20:22:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:00,299 INFO L479 AbstractCegarLoop]: Abstraction has 34507 states and 46382 transitions. [2020-10-12 20:22:00,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:22:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 34507 states and 46382 transitions. [2020-10-12 20:22:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:22:00,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:00,316 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 20:22:00,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:22:00,317 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:00,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2122578662, now seen corresponding path program 1 times [2020-10-12 20:22:00,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:00,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852293437] [2020-10-12 20:22:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:22:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:22:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:22:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:05,624 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:22:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:22:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:22:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:22:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:05,675 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 20:22:05,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852293437] [2020-10-12 20:22:05,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:05,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:22:05,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206585694] [2020-10-12 20:22:05,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:22:05,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:05,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:22:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:22:05,676 INFO L87 Difference]: Start difference. First operand 34507 states and 46382 transitions. Second operand 9 states. [2020-10-12 20:22:05,954 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:22:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:13,213 INFO L93 Difference]: Finished difference Result 90951 states and 124486 transitions. [2020-10-12 20:22:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:22:13,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-10-12 20:22:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:13,271 INFO L225 Difference]: With dead ends: 90951 [2020-10-12 20:22:13,271 INFO L226 Difference]: Without dead ends: 63447 [2020-10-12 20:22:13,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:22:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63447 states. [2020-10-12 20:22:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63447 to 39299. [2020-10-12 20:22:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39299 states. [2020-10-12 20:22:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39299 states to 39299 states and 52808 transitions. [2020-10-12 20:22:17,627 INFO L78 Accepts]: Start accepts. Automaton has 39299 states and 52808 transitions. Word has length 171 [2020-10-12 20:22:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:17,627 INFO L479 AbstractCegarLoop]: Abstraction has 39299 states and 52808 transitions. [2020-10-12 20:22:17,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:22:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 39299 states and 52808 transitions. [2020-10-12 20:22:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:22:17,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:17,642 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 20:22:17,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:22:17,642 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:17,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1479936451, now seen corresponding path program 1 times [2020-10-12 20:22:17,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:17,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3937307] [2020-10-12 20:22:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:21,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:22,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:22:22,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:22:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:22:22,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 20:22:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:22,931 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:22:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:22,969 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 20:22:22,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3937307] [2020-10-12 20:22:22,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:22,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:22,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295419217] [2020-10-12 20:22:22,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:22,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:22,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:22,971 INFO L87 Difference]: Start difference. First operand 39299 states and 52808 transitions. Second operand 5 states. [2020-10-12 20:22:23,235 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 20:22:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:28,861 INFO L93 Difference]: Finished difference Result 69989 states and 94130 transitions. [2020-10-12 20:22:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:22:28,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-12 20:22:28,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:28,894 INFO L225 Difference]: With dead ends: 69989 [2020-10-12 20:22:28,894 INFO L226 Difference]: Without dead ends: 39333 [2020-10-12 20:22:28,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:22:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39333 states. [2020-10-12 20:22:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39333 to 39299. [2020-10-12 20:22:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39299 states. [2020-10-12 20:22:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39299 states to 39299 states and 52603 transitions. [2020-10-12 20:22:31,788 INFO L78 Accepts]: Start accepts. Automaton has 39299 states and 52603 transitions. Word has length 171 [2020-10-12 20:22:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:31,788 INFO L479 AbstractCegarLoop]: Abstraction has 39299 states and 52603 transitions. [2020-10-12 20:22:31,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39299 states and 52603 transitions. [2020-10-12 20:22:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 20:22:31,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:31,807 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, 1] [2020-10-12 20:22:31,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:22:31,807 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash -195452349, now seen corresponding path program 1 times [2020-10-12 20:22:31,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:31,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149215990] [2020-10-12 20:22:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:22:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:33,117 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:22:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:33,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:33,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:33,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:22:33,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:33,154 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 20:22:33,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149215990] [2020-10-12 20:22:33,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:33,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:22:33,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147152827] [2020-10-12 20:22:33,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:22:33,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:33,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:22:33,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:22:33,156 INFO L87 Difference]: Start difference. First operand 39299 states and 52603 transitions. Second operand 4 states. [2020-10-12 20:22:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:39,846 INFO L93 Difference]: Finished difference Result 86308 states and 118574 transitions. [2020-10-12 20:22:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:22:39,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-12 20:22:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:39,900 INFO L225 Difference]: With dead ends: 86308 [2020-10-12 20:22:39,900 INFO L226 Difference]: Without dead ends: 52653 [2020-10-12 20:22:39,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:22:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52653 states. [2020-10-12 20:22:44,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52653 to 48221. [2020-10-12 20:22:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48221 states. [2020-10-12 20:22:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48221 states to 48221 states and 66784 transitions. [2020-10-12 20:22:44,085 INFO L78 Accepts]: Start accepts. Automaton has 48221 states and 66784 transitions. Word has length 172 [2020-10-12 20:22:44,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:44,085 INFO L479 AbstractCegarLoop]: Abstraction has 48221 states and 66784 transitions. [2020-10-12 20:22:44,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:22:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 48221 states and 66784 transitions. [2020-10-12 20:22:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:22:44,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:44,101 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, 1, 1, 1, 1] [2020-10-12 20:22:44,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:22:44,102 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash 375349628, now seen corresponding path program 1 times [2020-10-12 20:22:44,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:44,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289972748] [2020-10-12 20:22:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 20:22:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 20:22:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:45,079 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:22:45,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:45,122 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 20:22:45,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289972748] [2020-10-12 20:22:45,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:45,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:22:45,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282695217] [2020-10-12 20:22:45,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:22:45,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:22:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:22:45,124 INFO L87 Difference]: Start difference. First operand 48221 states and 66784 transitions. Second operand 4 states. [2020-10-12 20:22:45,373 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 20:22:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:55,453 INFO L93 Difference]: Finished difference Result 121332 states and 173135 transitions. [2020-10-12 20:22:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:55,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-12 20:22:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:55,543 INFO L225 Difference]: With dead ends: 121332 [2020-10-12 20:22:55,543 INFO L226 Difference]: Without dead ends: 87686 [2020-10-12 20:22:55,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87686 states. [2020-10-12 20:23:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87686 to 87684. [2020-10-12 20:23:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87684 states. [2020-10-12 20:23:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87684 states to 87684 states and 122946 transitions. [2020-10-12 20:23:04,461 INFO L78 Accepts]: Start accepts. Automaton has 87684 states and 122946 transitions. Word has length 175 [2020-10-12 20:23:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:04,462 INFO L479 AbstractCegarLoop]: Abstraction has 87684 states and 122946 transitions. [2020-10-12 20:23:04,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:23:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 87684 states and 122946 transitions. [2020-10-12 20:23:04,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:23:04,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:04,479 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, 1, 1, 1, 1] [2020-10-12 20:23:04,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:23:04,479 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:04,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:04,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1641509814, now seen corresponding path program 1 times [2020-10-12 20:23:04,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:04,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234373436] [2020-10-12 20:23:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:23:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 20:23:04,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 20:23:04,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:05,217 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:23:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:05,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:05,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:05,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:23:05,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:05,253 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 20:23:05,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234373436] [2020-10-12 20:23:05,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:05,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:23:05,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002432732] [2020-10-12 20:23:05,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:23:05,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:05,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:23:05,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:23:05,255 INFO L87 Difference]: Start difference. First operand 87684 states and 122946 transitions. Second operand 4 states. [2020-10-12 20:23:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:15,982 INFO L93 Difference]: Finished difference Result 174773 states and 249218 transitions. [2020-10-12 20:23:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:23:15,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-12 20:23:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:16,095 INFO L225 Difference]: With dead ends: 174773 [2020-10-12 20:23:16,095 INFO L226 Difference]: Without dead ends: 89907 [2020-10-12 20:23:16,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:23:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89907 states. [2020-10-12 20:23:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89907 to 88325. [2020-10-12 20:23:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88325 states. [2020-10-12 20:23:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88325 states to 88325 states and 126676 transitions. [2020-10-12 20:23:26,261 INFO L78 Accepts]: Start accepts. Automaton has 88325 states and 126676 transitions. Word has length 175 [2020-10-12 20:23:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:26,262 INFO L479 AbstractCegarLoop]: Abstraction has 88325 states and 126676 transitions. [2020-10-12 20:23:26,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:23:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 88325 states and 126676 transitions. [2020-10-12 20:23:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-12 20:23:26,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:26,275 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:26,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:23:26,275 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:26,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1467884172, now seen corresponding path program 1 times [2020-10-12 20:23:26,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:26,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181886664] [2020-10-12 20:23:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:30,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:30,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 20:23:30,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:23:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4254 [2020-10-12 20:23:30,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:23:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 20:23:30,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:23:30,882 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-12 20:23:31,402 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:23:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:31,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:23:31,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:31,600 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 20:23:31,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181886664] [2020-10-12 20:23:31,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:31,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:23:31,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336709756] [2020-10-12 20:23:31,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:23:31,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:31,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:23:31,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:23:31,603 INFO L87 Difference]: Start difference. First operand 88325 states and 126676 transitions. Second operand 11 states. [2020-10-12 20:23:31,889 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-12 20:23:32,386 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-12 20:23:32,640 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-12 20:23:33,142 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-12 20:23:33,664 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-12 20:23:33,969 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79