/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.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:25:16,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:25:16,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:25:16,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:25:16,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:25:16,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:25:16,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:25:16,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:25:16,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:25:16,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:25:16,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:25:16,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:25:16,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:25:16,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:25:16,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:25:16,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:25:16,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:25:16,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:25:16,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:25:16,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:25:16,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:25:16,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:25:16,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:25:16,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:25:16,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:25:16,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:25:16,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:25:16,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:25:16,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:25:16,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:25:16,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:25:16,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:25:16,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:25:16,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:25:16,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:25:16,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:25:16,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:25:16,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:25:16,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:25:16,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:25:16,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:25:16,724 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 20:25:16,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:25:16,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:25:16,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:25:16,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:25:16,770 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:25:16,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:25:16,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:25:16,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:25:16,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:25:16,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:25:16,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:25:16,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:25:16,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:25:16,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:25:16,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:25:16,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:25:16,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:25:16,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:25:16,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:25:16,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:25:16,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:25:16,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:25:16,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:25:16,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:25:16,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:25:16,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:25:16,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:25:16,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:25:16,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:25:16,776 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 20:25:17,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:25:17,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:25:17,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:25:17,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:25:17,162 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:25:17,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:25:17,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61c88d969/f74f64eca2684857b4654af33e276e88/FLAGe5ac5ed58 [2020-10-12 20:25:17,894 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:25:17,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:25:17,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61c88d969/f74f64eca2684857b4654af33e276e88/FLAGe5ac5ed58 [2020-10-12 20:25:18,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61c88d969/f74f64eca2684857b4654af33e276e88 [2020-10-12 20:25:18,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:25:18,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:25:18,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:25:18,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:25:18,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:25:18,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:25:18" (1/1) ... [2020-10-12 20:25:18,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335959a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:18, skipping insertion in model container [2020-10-12 20:25:18,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:25:18" (1/1) ... [2020-10-12 20:25:18,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:25:18,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:25:19,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:25:19,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:25:19,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:25:19,810 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:25:19,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19 WrapperNode [2020-10-12 20:25:19,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:25:19,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:25:19,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:25:19,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:25:19,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:19,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:19,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:19,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:19,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:20,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:20,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (1/1) ... [2020-10-12 20:25:20,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:25:20,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:25:20,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:25:20,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:25:20,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (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 20:25:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:25:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:25:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:25:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:25:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:25:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:25:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:25:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:25:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:25:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:25:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:25:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:25:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:25:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:25:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:25:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:25:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:25:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:25:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:25:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:25:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:25:22,771 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:25:22,772 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:25:22,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:25:22 BoogieIcfgContainer [2020-10-12 20:25:22,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:25:22,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:25:22,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:25:22,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:25:22,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:25:18" (1/3) ... [2020-10-12 20:25:22,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b5e2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:25:22, skipping insertion in model container [2020-10-12 20:25:22,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:19" (2/3) ... [2020-10-12 20:25:22,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b5e2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:25:22, skipping insertion in model container [2020-10-12 20:25:22,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:25:22" (3/3) ... [2020-10-12 20:25:22,795 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:25:22,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:25:22,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:25:22,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:25:22,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:25:22,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:25:22,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:25:22,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:25:22,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:25:22,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:25:22,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:25:22,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:25:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states. [2020-10-12 20:25:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 20:25:22,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:22,957 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 20:25:22,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1803942302, now seen corresponding path program 1 times [2020-10-12 20:25:22,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:22,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880749365] [2020-10-12 20:25:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:28,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:28,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:28,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 20:25:28,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:25:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:25:28,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:25:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:25:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:25:29,887 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:25:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:29,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:29,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:25:29,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:25:30,293 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 20:25:30,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880749365] [2020-10-12 20:25:30,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:30,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:30,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562534975] [2020-10-12 20:25:30,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:30,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:30,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:30,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:30,335 INFO L87 Difference]: Start difference. First operand 776 states. Second operand 5 states. [2020-10-12 20:25:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:38,945 INFO L93 Difference]: Finished difference Result 2240 states and 3988 transitions. [2020-10-12 20:25:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:25:38,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-12 20:25:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:38,991 INFO L225 Difference]: With dead ends: 2240 [2020-10-12 20:25:38,992 INFO L226 Difference]: Without dead ends: 1489 [2020-10-12 20:25:39,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-10-12 20:25:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1487. [2020-10-12 20:25:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-10-12 20:25:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2306 transitions. [2020-10-12 20:25:39,140 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2306 transitions. Word has length 320 [2020-10-12 20:25:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:39,142 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 2306 transitions. [2020-10-12 20:25:39,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2306 transitions. [2020-10-12 20:25:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 20:25:39,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:39,150 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, 1, 1] [2020-10-12 20:25:39,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:25:39,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:39,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1992854732, now seen corresponding path program 1 times [2020-10-12 20:25:39,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:39,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742361677] [2020-10-12 20:25:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:40,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:44,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 20:25:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:25:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 20:25:44,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:25:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:25:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:25:45,480 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:25:45,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:25:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:45,995 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 20:25:45,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742361677] [2020-10-12 20:25:45,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:45,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:45,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607213678] [2020-10-12 20:25:46,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:46,003 INFO L87 Difference]: Start difference. First operand 1487 states and 2306 transitions. Second operand 5 states. [2020-10-12 20:25:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:54,313 INFO L93 Difference]: Finished difference Result 4357 states and 6744 transitions. [2020-10-12 20:25:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:54,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 20:25:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:54,331 INFO L225 Difference]: With dead ends: 4357 [2020-10-12 20:25:54,331 INFO L226 Difference]: Without dead ends: 2899 [2020-10-12 20:25:54,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-12 20:25:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2897. [2020-10-12 20:25:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2897 states. [2020-10-12 20:25:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4458 transitions. [2020-10-12 20:25:54,460 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4458 transitions. Word has length 322 [2020-10-12 20:25:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:54,461 INFO L479 AbstractCegarLoop]: Abstraction has 2897 states and 4458 transitions. [2020-10-12 20:25:54,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4458 transitions. [2020-10-12 20:25:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 20:25:54,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:54,471 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 20:25:54,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:25:54,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:54,472 INFO L82 PathProgramCache]: Analyzing trace with hash -119563439, now seen corresponding path program 1 times [2020-10-12 20:25:54,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:54,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106582890] [2020-10-12 20:25:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:59,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:59,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 20:25:59,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:25:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 20:25:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 20:25:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:25:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:26:00,300 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:26:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:00,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:00,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:00,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:00,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:26:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:26:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:00,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106582890] [2020-10-12 20:26:00,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:00,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:00,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432233631] [2020-10-12 20:26:00,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:00,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:00,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:00,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:00,590 INFO L87 Difference]: Start difference. First operand 2897 states and 4458 transitions. Second operand 5 states. [2020-10-12 20:26:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:10,257 INFO L93 Difference]: Finished difference Result 8316 states and 12723 transitions. [2020-10-12 20:26:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:10,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 20:26:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:10,286 INFO L225 Difference]: With dead ends: 8316 [2020-10-12 20:26:10,286 INFO L226 Difference]: Without dead ends: 5722 [2020-10-12 20:26:10,292 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 20:26:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2020-10-12 20:26:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 3188. [2020-10-12 20:26:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3188 states. [2020-10-12 20:26:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 4969 transitions. [2020-10-12 20:26:10,477 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 4969 transitions. Word has length 324 [2020-10-12 20:26:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:10,479 INFO L479 AbstractCegarLoop]: Abstraction has 3188 states and 4969 transitions. [2020-10-12 20:26:10,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 4969 transitions. [2020-10-12 20:26:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-12 20:26:10,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:10,491 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] [2020-10-12 20:26:10,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:26:10,495 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:10,496 INFO L82 PathProgramCache]: Analyzing trace with hash -358056999, now seen corresponding path program 1 times [2020-10-12 20:26:10,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:10,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20268688] [2020-10-12 20:26:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:15,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-12 20:26:15,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:26:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 20:26:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:26:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:26:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:16,294 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:26:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:16,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:16,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:16,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:26:16,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:26:16,637 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 20:26:16,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20268688] [2020-10-12 20:26:16,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:16,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:16,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137745744] [2020-10-12 20:26:16,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:16,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:16,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:16,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:16,644 INFO L87 Difference]: Start difference. First operand 3188 states and 4969 transitions. Second operand 5 states. [2020-10-12 20:26:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:23,392 INFO L93 Difference]: Finished difference Result 9438 states and 14696 transitions. [2020-10-12 20:26:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:23,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-12 20:26:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:23,419 INFO L225 Difference]: With dead ends: 9438 [2020-10-12 20:26:23,419 INFO L226 Difference]: Without dead ends: 6269 [2020-10-12 20:26:23,426 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 20:26:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2020-10-12 20:26:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6263. [2020-10-12 20:26:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6263 states. [2020-10-12 20:26:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 9698 transitions. [2020-10-12 20:26:23,752 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 9698 transitions. Word has length 325 [2020-10-12 20:26:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:23,753 INFO L479 AbstractCegarLoop]: Abstraction has 6263 states and 9698 transitions. [2020-10-12 20:26:23,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 9698 transitions. [2020-10-12 20:26:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-12 20:26:23,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:23,774 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] [2020-10-12 20:26:23,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:26:23,775 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:23,775 INFO L82 PathProgramCache]: Analyzing trace with hash -776229920, now seen corresponding path program 1 times [2020-10-12 20:26:23,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:23,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335916915] [2020-10-12 20:26:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-12 20:26:28,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:26:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:26:28,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:26:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 20:26:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:29,481 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:26:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:29,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:29,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:29,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:26:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:29,700 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 20:26:29,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335916915] [2020-10-12 20:26:29,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:29,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:29,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165575491] [2020-10-12 20:26:29,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:29,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:29,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:29,703 INFO L87 Difference]: Start difference. First operand 6263 states and 9698 transitions. Second operand 5 states. [2020-10-12 20:26:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:36,591 INFO L93 Difference]: Finished difference Result 18171 states and 28048 transitions. [2020-10-12 20:26:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:36,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-12 20:26:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:36,651 INFO L225 Difference]: With dead ends: 18171 [2020-10-12 20:26:36,651 INFO L226 Difference]: Without dead ends: 12139 [2020-10-12 20:26:36,665 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 20:26:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12139 states. [2020-10-12 20:26:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12139 to 12137. [2020-10-12 20:26:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12137 states. [2020-10-12 20:26:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12137 states to 12137 states and 18596 transitions. [2020-10-12 20:26:37,280 INFO L78 Accepts]: Start accepts. Automaton has 12137 states and 18596 transitions. Word has length 327 [2020-10-12 20:26:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:37,281 INFO L479 AbstractCegarLoop]: Abstraction has 12137 states and 18596 transitions. [2020-10-12 20:26:37,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 12137 states and 18596 transitions. [2020-10-12 20:26:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-12 20:26:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:37,312 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] [2020-10-12 20:26:37,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:26:37,313 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1292091284, now seen corresponding path program 1 times [2020-10-12 20:26:37,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:37,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280867559] [2020-10-12 20:26:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:42,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:42,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:26:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:42,960 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:26:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:42,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:42,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:42,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:26:42,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:43,091 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 20:26:43,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280867559] [2020-10-12 20:26:43,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:43,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:43,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449683883] [2020-10-12 20:26:43,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:43,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:43,093 INFO L87 Difference]: Start difference. First operand 12137 states and 18596 transitions. Second operand 5 states. [2020-10-12 20:26:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:50,569 INFO L93 Difference]: Finished difference Result 36036 states and 55172 transitions. [2020-10-12 20:26:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:50,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-12 20:26:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:50,622 INFO L225 Difference]: With dead ends: 36036 [2020-10-12 20:26:50,622 INFO L226 Difference]: Without dead ends: 23930 [2020-10-12 20:26:50,647 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 20:26:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23930 states. [2020-10-12 20:26:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23930 to 23928. [2020-10-12 20:26:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23928 states. [2020-10-12 20:26:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23928 states to 23928 states and 36410 transitions. [2020-10-12 20:26:52,539 INFO L78 Accepts]: Start accepts. Automaton has 23928 states and 36410 transitions. Word has length 329 [2020-10-12 20:26:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:52,540 INFO L479 AbstractCegarLoop]: Abstraction has 23928 states and 36410 transitions. [2020-10-12 20:26:52,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23928 states and 36410 transitions. [2020-10-12 20:26:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-12 20:26:52,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:52,611 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] [2020-10-12 20:26:52,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:26:52,611 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash -551721976, now seen corresponding path program 1 times [2020-10-12 20:26:52,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:52,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225400617] [2020-10-12 20:26:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:52,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:57,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:57,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-12 20:26:57,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 20:26:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:26:57,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:26:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 20:26:57,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:58,274 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:26:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:58,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:58,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:58,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:26:58,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:58,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:58,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:58,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:58,399 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 20:26:58,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225400617] [2020-10-12 20:26:58,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:58,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:58,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004169991] [2020-10-12 20:26:58,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:58,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:58,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:58,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:58,402 INFO L87 Difference]: Start difference. First operand 23928 states and 36410 transitions. Second operand 5 states. [2020-10-12 20:27:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:06,859 INFO L93 Difference]: Finished difference Result 69992 states and 106278 transitions. [2020-10-12 20:27:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:06,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-12 20:27:06,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:06,964 INFO L225 Difference]: With dead ends: 69992 [2020-10-12 20:27:06,964 INFO L226 Difference]: Without dead ends: 46664 [2020-10-12 20:27:07,011 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 20:27:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46664 states. [2020-10-12 20:27:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46664 to 46662. [2020-10-12 20:27:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46662 states. [2020-10-12 20:27:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46662 states to 46662 states and 70262 transitions. [2020-10-12 20:27:09,250 INFO L78 Accepts]: Start accepts. Automaton has 46662 states and 70262 transitions. Word has length 331 [2020-10-12 20:27:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:09,251 INFO L479 AbstractCegarLoop]: Abstraction has 46662 states and 70262 transitions. [2020-10-12 20:27:09,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 46662 states and 70262 transitions. [2020-10-12 20:27:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-12 20:27:09,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:09,297 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] [2020-10-12 20:27:09,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:27:09,297 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1259337458, now seen corresponding path program 1 times [2020-10-12 20:27:09,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:09,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206190816] [2020-10-12 20:27:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:13,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:14,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:14,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-12 20:27:14,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:27:14,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-10-12 20:27:14,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:27:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 20:27:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:15,160 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:27:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:15,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:15,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:15,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:15,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:27:15,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:15,277 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 20:27:15,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206190816] [2020-10-12 20:27:15,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:15,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:15,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840554651] [2020-10-12 20:27:15,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:15,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:15,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:15,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:15,280 INFO L87 Difference]: Start difference. First operand 46662 states and 70262 transitions. Second operand 5 states. [2020-10-12 20:27:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:27,318 INFO L93 Difference]: Finished difference Result 133129 states and 199756 transitions. [2020-10-12 20:27:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:27,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-12 20:27:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:27,443 INFO L225 Difference]: With dead ends: 133129 [2020-10-12 20:27:27,443 INFO L226 Difference]: Without dead ends: 89247 [2020-10-12 20:27:27,504 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 20:27:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89247 states. [2020-10-12 20:27:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89247 to 89245. [2020-10-12 20:27:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89245 states. [2020-10-12 20:27:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89245 states to 89245 states and 132798 transitions. [2020-10-12 20:27:30,934 INFO L78 Accepts]: Start accepts. Automaton has 89245 states and 132798 transitions. Word has length 333 [2020-10-12 20:27:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:30,934 INFO L479 AbstractCegarLoop]: Abstraction has 89245 states and 132798 transitions. [2020-10-12 20:27:30,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 89245 states and 132798 transitions. [2020-10-12 20:27:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-12 20:27:31,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:31,015 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 20:27:31,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:27:31,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:31,016 INFO L82 PathProgramCache]: Analyzing trace with hash -240039432, now seen corresponding path program 1 times [2020-10-12 20:27:31,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:31,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789367172] [2020-10-12 20:27:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:36,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 20:27:36,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:27:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:27:36,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 20:27:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:27:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:36,713 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:27:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:27:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:36,812 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 20:27:36,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789367172] [2020-10-12 20:27:36,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:36,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:36,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762366673] [2020-10-12 20:27:36,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:36,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:36,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:36,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:36,814 INFO L87 Difference]: Start difference. First operand 89245 states and 132798 transitions. Second operand 5 states. [2020-10-12 20:27:51,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:51,317 INFO L93 Difference]: Finished difference Result 241884 states and 358611 transitions. [2020-10-12 20:27:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:51,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-12 20:27:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:51,595 INFO L225 Difference]: With dead ends: 241884 [2020-10-12 20:27:51,595 INFO L226 Difference]: Without dead ends: 160550 [2020-10-12 20:27:51,716 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 20:27:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160550 states. [2020-10-12 20:27:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160550 to 95854. [2020-10-12 20:27:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95854 states. [2020-10-12 20:28:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95854 states to 95854 states and 142806 transitions. [2020-10-12 20:28:00,016 INFO L78 Accepts]: Start accepts. Automaton has 95854 states and 142806 transitions. Word has length 335 [2020-10-12 20:28:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:00,016 INFO L479 AbstractCegarLoop]: Abstraction has 95854 states and 142806 transitions. [2020-10-12 20:28:00,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 95854 states and 142806 transitions. [2020-10-12 20:28:00,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-12 20:28:00,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:00,081 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 20:28:00,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:28:00,082 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1132537976, now seen corresponding path program 1 times [2020-10-12 20:28:00,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:00,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085994682] [2020-10-12 20:28:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:28:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:05,792 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:28:05,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:05,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:05,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:05,885 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 20:28:05,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085994682] [2020-10-12 20:28:05,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:05,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:05,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443900498] [2020-10-12 20:28:05,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:05,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:05,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:05,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:05,888 INFO L87 Difference]: Start difference. First operand 95854 states and 142806 transitions. Second operand 5 states. [2020-10-12 20:28:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:24,249 INFO L93 Difference]: Finished difference Result 257728 states and 382123 transitions. [2020-10-12 20:28:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:24,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-10-12 20:28:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:24,449 INFO L225 Difference]: With dead ends: 257728 [2020-10-12 20:28:24,449 INFO L226 Difference]: Without dead ends: 175201 [2020-10-12 20:28:24,526 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 20:28:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175201 states. [2020-10-12 20:28:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175201 to 105382. [2020-10-12 20:28:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105382 states. [2020-10-12 20:28:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105382 states to 105382 states and 156750 transitions. [2020-10-12 20:28:32,745 INFO L78 Accepts]: Start accepts. Automaton has 105382 states and 156750 transitions. Word has length 337 [2020-10-12 20:28:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:32,746 INFO L479 AbstractCegarLoop]: Abstraction has 105382 states and 156750 transitions. [2020-10-12 20:28:32,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 105382 states and 156750 transitions. [2020-10-12 20:28:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-12 20:28:32,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:32,821 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, 1] [2020-10-12 20:28:32,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:28:32,821 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1722869803, now seen corresponding path program 1 times [2020-10-12 20:28:32,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:32,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044215051] [2020-10-12 20:28:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:37,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-12 20:28:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:38,551 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:28:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:38,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:38,842 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 20:28:38,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044215051] [2020-10-12 20:28:38,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:38,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:38,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789403261] [2020-10-12 20:28:38,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:38,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:38,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:38,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:38,845 INFO L87 Difference]: Start difference. First operand 105382 states and 156750 transitions. Second operand 5 states.