/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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:21:29,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:21:29,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:21:29,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:21:29,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:21:29,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:21:29,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:21:29,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:21:29,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:21:29,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:21:29,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:21:29,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:21:29,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:21:29,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:21:29,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:21:29,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:21:29,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:21:29,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:21:29,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:21:29,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:21:29,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:21:29,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:21:29,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:21:29,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:21:29,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:21:29,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:21:29,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:21:29,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:21:29,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:21:29,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:21:29,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:21:29,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:21:29,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:21:29,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:21:29,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:21:29,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:21:29,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:21:29,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:21:29,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:21:29,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:21:29,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:21:29,690 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 20:21:29,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:21:29,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:21:29,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:21:29,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:21:29,715 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:21:29,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:21:29,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:21:29,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:21:29,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:21:29,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:21:29,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:21:29,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:21:29,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:21:29,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:21:29,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:21:29,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:21:29,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:21:29,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:21:29,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:21:29,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:21:29,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:21:29,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:21:29,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:21:29,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:21:29,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:21:29,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:21:29,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:21:29,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:21:29,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:21:29,720 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 20:21:30,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:21:30,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:21:30,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:21:30,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:21:30,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:21:30,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:21:30,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ba384fa7/2c6b4bc85da146f6b82c2f1b6f913869/FLAG1b65abfba [2020-10-12 20:21:30,862 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:21:30,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:21:30,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ba384fa7/2c6b4bc85da146f6b82c2f1b6f913869/FLAG1b65abfba [2020-10-12 20:21:30,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ba384fa7/2c6b4bc85da146f6b82c2f1b6f913869 [2020-10-12 20:21:30,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:21:30,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:21:30,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:21:30,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:21:31,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:21:31,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:21:30" (1/1) ... [2020-10-12 20:21:31,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbfd6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:31, skipping insertion in model container [2020-10-12 20:21:31,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:21:30" (1/1) ... [2020-10-12 20:21:31,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:21:31,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:21:32,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:21:32,114 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:21:32,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:21:32,625 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:21:32,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32 WrapperNode [2020-10-12 20:21:32,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:21:32,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:21:32,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:21:32,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:21:32,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (1/1) ... [2020-10-12 20:21:32,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:21:32,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:21:32,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:21:32,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:21:32,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (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 20:21:32,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:21:32,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:21:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:21:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:21:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:21:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:21:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:21:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:21:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:21:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:21:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:21:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:21:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:21:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:21:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:21:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:21:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:21:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:21:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:21:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:21:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:21:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:21:35,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:21:35,315 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:21:35,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:21:35 BoogieIcfgContainer [2020-10-12 20:21:35,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:21:35,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:21:35,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:21:35,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:21:35,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:21:30" (1/3) ... [2020-10-12 20:21:35,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:21:35, skipping insertion in model container [2020-10-12 20:21:35,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:32" (2/3) ... [2020-10-12 20:21:35,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:21:35, skipping insertion in model container [2020-10-12 20:21:35,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:21:35" (3/3) ... [2020-10-12 20:21:35,335 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:21:35,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:21:35,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:21:35,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:21:35,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:21:35,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:21:35,400 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:21:35,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:21:35,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:21:35,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:21:35,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:21:35,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:21:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2020-10-12 20:21:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-12 20:21:35,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:35,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:35,467 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:35,474 INFO L82 PathProgramCache]: Analyzing trace with hash 578636414, now seen corresponding path program 1 times [2020-10-12 20:21:35,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:35,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103742872] [2020-10-12 20:21:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:41,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 20:21:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:21:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 20:21:41,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:21:41,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:21:42,260 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:21:42,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 20:21:42,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:21:42,546 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 20:21:42,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103742872] [2020-10-12 20:21:42,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:42,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:42,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927624719] [2020-10-12 20:21:42,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:42,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:42,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:42,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:42,577 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 5 states. [2020-10-12 20:21:50,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:50,911 INFO L93 Difference]: Finished difference Result 2314 states and 4100 transitions. [2020-10-12 20:21:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:21:50,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-12 20:21:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:50,957 INFO L225 Difference]: With dead ends: 2314 [2020-10-12 20:21:50,957 INFO L226 Difference]: Without dead ends: 1537 [2020-10-12 20:21:50,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:21:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2020-10-12 20:21:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2020-10-12 20:21:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2020-10-12 20:21:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2392 transitions. [2020-10-12 20:21:51,139 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2392 transitions. Word has length 318 [2020-10-12 20:21:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:51,140 INFO L479 AbstractCegarLoop]: Abstraction has 1535 states and 2392 transitions. [2020-10-12 20:21:51,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2392 transitions. [2020-10-12 20:21:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 20:21:51,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:51,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:51,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:21:51,151 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash 360445957, now seen corresponding path program 1 times [2020-10-12 20:21:51,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:51,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072127438] [2020-10-12 20:21:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:52,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:56,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:56,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 20:21:56,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:21:56,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:21:56,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 20:21:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:57,025 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:21:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:57,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:57,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:21:57,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:21:57,352 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 20:21:57,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072127438] [2020-10-12 20:21:57,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:57,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:57,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919568173] [2020-10-12 20:21:57,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:57,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:57,361 INFO L87 Difference]: Start difference. First operand 1535 states and 2392 transitions. Second operand 5 states. [2020-10-12 20:22:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:04,777 INFO L93 Difference]: Finished difference Result 4518 states and 7032 transitions. [2020-10-12 20:22:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:04,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-12 20:22:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:04,797 INFO L225 Difference]: With dead ends: 4518 [2020-10-12 20:22:04,797 INFO L226 Difference]: Without dead ends: 3002 [2020-10-12 20:22:04,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-10-12 20:22:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 3000. [2020-10-12 20:22:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3000 states. [2020-10-12 20:22:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 4642 transitions. [2020-10-12 20:22:04,933 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 4642 transitions. Word has length 320 [2020-10-12 20:22:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:04,934 INFO L479 AbstractCegarLoop]: Abstraction has 3000 states and 4642 transitions. [2020-10-12 20:22:04,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 4642 transitions. [2020-10-12 20:22:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 20:22:04,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:04,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:04,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:22:04,945 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:04,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:04,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1382785874, now seen corresponding path program 1 times [2020-10-12 20:22:04,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:04,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650208644] [2020-10-12 20:22:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:07,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:10,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 20:22:10,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:22:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 20:22:10,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 20:22:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:22:10,718 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:22:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:10,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:10,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:22:10,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:10,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:10,930 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 20:22:10,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650208644] [2020-10-12 20:22:10,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:10,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:10,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948664340] [2020-10-12 20:22:10,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:10,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:10,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:10,934 INFO L87 Difference]: Start difference. First operand 3000 states and 4642 transitions. Second operand 5 states. [2020-10-12 20:22:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:17,812 INFO L93 Difference]: Finished difference Result 8861 states and 13700 transitions. [2020-10-12 20:22:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:17,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 20:22:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:17,842 INFO L225 Difference]: With dead ends: 8861 [2020-10-12 20:22:17,843 INFO L226 Difference]: Without dead ends: 5876 [2020-10-12 20:22:17,850 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 20:22:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2020-10-12 20:22:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 5874. [2020-10-12 20:22:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5874 states. [2020-10-12 20:22:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 9030 transitions. [2020-10-12 20:22:18,080 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 9030 transitions. Word has length 322 [2020-10-12 20:22:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:18,085 INFO L479 AbstractCegarLoop]: Abstraction has 5874 states and 9030 transitions. [2020-10-12 20:22:18,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 9030 transitions. [2020-10-12 20:22:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 20:22:18,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:18,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:18,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:22:18,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash -534947732, now seen corresponding path program 1 times [2020-10-12 20:22:18,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:18,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40328908] [2020-10-12 20:22:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 20:22:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:22:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 20:22:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 20:22:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:23,767 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:22:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:23,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:22:23,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:23,979 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 20:22:23,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40328908] [2020-10-12 20:22:23,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:23,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:23,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127817134] [2020-10-12 20:22:23,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:23,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:23,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:23,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:23,982 INFO L87 Difference]: Start difference. First operand 5874 states and 9030 transitions. Second operand 5 states. [2020-10-12 20:22:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:31,465 INFO L93 Difference]: Finished difference Result 17139 states and 26289 transitions. [2020-10-12 20:22:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:31,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 20:22:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:31,513 INFO L225 Difference]: With dead ends: 17139 [2020-10-12 20:22:31,513 INFO L226 Difference]: Without dead ends: 11513 [2020-10-12 20:22:31,526 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 20:22:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11513 states. [2020-10-12 20:22:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11513 to 11511. [2020-10-12 20:22:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11511 states. [2020-10-12 20:22:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11511 states to 11511 states and 17579 transitions. [2020-10-12 20:22:32,192 INFO L78 Accepts]: Start accepts. Automaton has 11511 states and 17579 transitions. Word has length 324 [2020-10-12 20:22:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:32,192 INFO L479 AbstractCegarLoop]: Abstraction has 11511 states and 17579 transitions. [2020-10-12 20:22:32,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 11511 states and 17579 transitions. [2020-10-12 20:22:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 20:22:32,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:32,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:32,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:22:32,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1715385399, now seen corresponding path program 1 times [2020-10-12 20:22:32,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:32,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109722253] [2020-10-12 20:22:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:32,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:37,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:37,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 20:22:37,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:22:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:22:37,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:22:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:22:37,951 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:22:37,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:37,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:37,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:37,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:22:37,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:38,157 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 20:22:38,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109722253] [2020-10-12 20:22:38,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:38,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:38,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106008999] [2020-10-12 20:22:38,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:38,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:38,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:38,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:38,161 INFO L87 Difference]: Start difference. First operand 11511 states and 17579 transitions. Second operand 5 states. [2020-10-12 20:22:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:45,816 INFO L93 Difference]: Finished difference Result 33387 states and 50797 transitions. [2020-10-12 20:22:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:45,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-12 20:22:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:45,876 INFO L225 Difference]: With dead ends: 33387 [2020-10-12 20:22:45,876 INFO L226 Difference]: Without dead ends: 22265 [2020-10-12 20:22:45,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22265 states. [2020-10-12 20:22:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22263. [2020-10-12 20:22:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22263 states. [2020-10-12 20:22:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22263 states to 22263 states and 33647 transitions. [2020-10-12 20:22:46,910 INFO L78 Accepts]: Start accepts. Automaton has 22263 states and 33647 transitions. Word has length 326 [2020-10-12 20:22:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:46,910 INFO L479 AbstractCegarLoop]: Abstraction has 22263 states and 33647 transitions. [2020-10-12 20:22:46,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 22263 states and 33647 transitions. [2020-10-12 20:22:46,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 20:22:46,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:46,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:46,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:22:46,950 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1458511754, now seen corresponding path program 1 times [2020-10-12 20:22:46,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:46,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188563269] [2020-10-12 20:22:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:52,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 20:22:52,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:22:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:22:52,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 20:22:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:22:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:52,588 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:22:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:52,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:52,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:52,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:22:52,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:52,747 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 20:22:52,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188563269] [2020-10-12 20:22:52,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:52,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:52,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279268660] [2020-10-12 20:22:52,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:52,751 INFO L87 Difference]: Start difference. First operand 22263 states and 33647 transitions. Second operand 5 states. [2020-10-12 20:23:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:00,944 INFO L93 Difference]: Finished difference Result 61166 states and 92104 transitions. [2020-10-12 20:23:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:00,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-12 20:23:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:01,028 INFO L225 Difference]: With dead ends: 61166 [2020-10-12 20:23:01,028 INFO L226 Difference]: Without dead ends: 40364 [2020-10-12 20:23:01,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40364 states. [2020-10-12 20:23:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40364 to 23660. [2020-10-12 20:23:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23660 states. [2020-10-12 20:23:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23660 states to 23660 states and 35930 transitions. [2020-10-12 20:23:02,318 INFO L78 Accepts]: Start accepts. Automaton has 23660 states and 35930 transitions. Word has length 328 [2020-10-12 20:23:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:02,318 INFO L479 AbstractCegarLoop]: Abstraction has 23660 states and 35930 transitions. [2020-10-12 20:23:02,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 23660 states and 35930 transitions. [2020-10-12 20:23:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 20:23:02,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:02,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:02,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:23:02,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1643877563, now seen corresponding path program 1 times [2020-10-12 20:23:02,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:02,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614038715] [2020-10-12 20:23:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:07,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:07,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 20:23:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 20:23:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:23:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 20:23:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:07,876 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:07,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:07,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:07,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:07,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:23:07,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:08,003 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 20:23:08,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614038715] [2020-10-12 20:23:08,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:08,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:08,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9693719] [2020-10-12 20:23:08,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:08,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:08,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:08,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:08,006 INFO L87 Difference]: Start difference. First operand 23660 states and 35930 transitions. Second operand 5 states. [2020-10-12 20:23:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:16,411 INFO L93 Difference]: Finished difference Result 68599 states and 103856 transitions. [2020-10-12 20:23:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:16,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-12 20:23:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:16,499 INFO L225 Difference]: With dead ends: 68599 [2020-10-12 20:23:16,500 INFO L226 Difference]: Without dead ends: 45764 [2020-10-12 20:23:16,547 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 20:23:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45764 states. [2020-10-12 20:23:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45764 to 45762. [2020-10-12 20:23:18,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45762 states. [2020-10-12 20:23:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45762 states to 45762 states and 68727 transitions. [2020-10-12 20:23:18,677 INFO L78 Accepts]: Start accepts. Automaton has 45762 states and 68727 transitions. Word has length 330 [2020-10-12 20:23:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:18,678 INFO L479 AbstractCegarLoop]: Abstraction has 45762 states and 68727 transitions. [2020-10-12 20:23:18,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand 45762 states and 68727 transitions. [2020-10-12 20:23:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-12 20:23:18,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:18,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:18,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:23:18,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2025424499, now seen corresponding path program 1 times [2020-10-12 20:23:18,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:18,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948806202] [2020-10-12 20:23:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 20:23:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:24,262 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:24,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:23:24,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:24,379 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 20:23:24,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948806202] [2020-10-12 20:23:24,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:24,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:24,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705995868] [2020-10-12 20:23:24,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:24,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:24,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:24,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:24,381 INFO L87 Difference]: Start difference. First operand 45762 states and 68727 transitions. Second operand 5 states. [2020-10-12 20:23:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:35,090 INFO L93 Difference]: Finished difference Result 133050 states and 199211 transitions. [2020-10-12 20:23:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:35,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-12 20:23:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:35,211 INFO L225 Difference]: With dead ends: 133050 [2020-10-12 20:23:35,211 INFO L226 Difference]: Without dead ends: 88658 [2020-10-12 20:23:35,268 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 20:23:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88658 states. [2020-10-12 20:23:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88658 to 88656. [2020-10-12 20:23:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88656 states. [2020-10-12 20:23:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88656 states to 88656 states and 131778 transitions. [2020-10-12 20:23:42,186 INFO L78 Accepts]: Start accepts. Automaton has 88656 states and 131778 transitions. Word has length 332 [2020-10-12 20:23:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:42,186 INFO L479 AbstractCegarLoop]: Abstraction has 88656 states and 131778 transitions. [2020-10-12 20:23:42,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 88656 states and 131778 transitions. [2020-10-12 20:23:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-12 20:23:42,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:42,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:42,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:23:42,271 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:42,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1137484731, now seen corresponding path program 1 times [2020-10-12 20:23:42,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:42,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983095866] [2020-10-12 20:23:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:47,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:47,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-12 20:23:47,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:23:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:23:47,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 20:23:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:23:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:47,846 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:23:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:47,943 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 20:23:47,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983095866] [2020-10-12 20:23:47,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:47,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:47,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886988641] [2020-10-12 20:23:47,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:47,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:47,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:47,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:47,945 INFO L87 Difference]: Start difference. First operand 88656 states and 131778 transitions. Second operand 5 states. [2020-10-12 20:24:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:06,848 INFO L93 Difference]: Finished difference Result 249592 states and 368766 transitions. [2020-10-12 20:24:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:06,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-12 20:24:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:07,082 INFO L225 Difference]: With dead ends: 249592 [2020-10-12 20:24:07,082 INFO L226 Difference]: Without dead ends: 174070 [2020-10-12 20:24:07,161 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 20:24:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174070 states. [2020-10-12 20:24:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174070 to 100404. [2020-10-12 20:24:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100404 states. [2020-10-12 20:24:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100404 states to 100404 states and 151036 transitions. [2020-10-12 20:24:14,799 INFO L78 Accepts]: Start accepts. Automaton has 100404 states and 151036 transitions. Word has length 334 [2020-10-12 20:24:14,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:14,799 INFO L479 AbstractCegarLoop]: Abstraction has 100404 states and 151036 transitions. [2020-10-12 20:24:14,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 100404 states and 151036 transitions. [2020-10-12 20:24:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-12 20:24:14,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:14,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:14,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:24:14,867 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:14,867 INFO L82 PathProgramCache]: Analyzing trace with hash 523101671, now seen corresponding path program 1 times [2020-10-12 20:24:14,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:14,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198193450] [2020-10-12 20:24:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:19,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 20:24:19,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:24:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:24:19,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:24:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:24:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:20,552 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:24:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:20,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:24:20,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:20,652 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 20:24:20,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198193450] [2020-10-12 20:24:20,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:20,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:20,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700301744] [2020-10-12 20:24:20,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:20,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:20,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:20,655 INFO L87 Difference]: Start difference. First operand 100404 states and 151036 transitions. Second operand 5 states. [2020-10-12 20:24:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:37,504 INFO L93 Difference]: Finished difference Result 259785 states and 386355 transitions. [2020-10-12 20:24:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:37,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-12 20:24:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:37,723 INFO L225 Difference]: With dead ends: 259785 [2020-10-12 20:24:37,723 INFO L226 Difference]: Without dead ends: 183303 [2020-10-12 20:24:37,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183303 states. [2020-10-12 20:24:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183303 to 118005. [2020-10-12 20:24:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118005 states. [2020-10-12 20:24:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118005 states to 118005 states and 178969 transitions. [2020-10-12 20:24:48,216 INFO L78 Accepts]: Start accepts. Automaton has 118005 states and 178969 transitions. Word has length 335 [2020-10-12 20:24:48,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:48,216 INFO L479 AbstractCegarLoop]: Abstraction has 118005 states and 178969 transitions. [2020-10-12 20:24:48,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 118005 states and 178969 transitions. [2020-10-12 20:24:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-12 20:24:48,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:48,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:48,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:24:48,309 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash 489798148, now seen corresponding path program 1 times [2020-10-12 20:24:48,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:48,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410358925] [2020-10-12 20:24:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-12 20:24:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:24:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:24:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 20:24:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:53,848 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:24:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:53,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:24:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:54,030 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 20:24:54,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410358925] [2020-10-12 20:24:54,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:54,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:54,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578483415] [2020-10-12 20:24:54,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:54,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:54,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:54,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:54,033 INFO L87 Difference]: Start difference. First operand 118005 states and 178969 transitions. Second operand 5 states.