/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:02:20,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:02:20,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:02:20,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:02:20,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:02:21,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:02:21,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:02:21,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:02:21,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:02:21,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:02:21,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:02:21,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:02:21,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:02:21,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:02:21,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:02:21,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:02:21,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:02:21,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:02:21,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:02:21,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:02:21,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:02:21,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:02:21,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:02:21,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:02:21,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:02:21,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:02:21,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:02:21,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:02:21,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:02:21,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:02:21,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:02:21,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:02:21,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:02:21,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:02:21,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:02:21,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:02:21,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:02:21,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:02:21,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:02:21,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:02:21,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:02:21,073 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 [2020-10-13 14:02:21,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:02:21,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:02:21,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:02:21,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:02:21,100 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:02:21,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:02:21,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:02:21,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:02:21,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:02:21,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:02:21,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:02:21,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:02:21,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:02:21,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:02:21,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:02:21,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:02:21,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:02:21,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:02:21,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:02:21,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:02:21,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:02:21,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:02:21,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:02:21,107 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:02:21,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:02:21,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:02:21,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:02:21,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:02:21,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:02:21,456 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 14:02:21,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abc67d92a/157646bb9c8b4247a78dd6c67825e0e8/FLAG2115e8e8e [2020-10-13 14:02:22,059 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:02:22,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 14:02:22,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abc67d92a/157646bb9c8b4247a78dd6c67825e0e8/FLAG2115e8e8e [2020-10-13 14:02:22,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abc67d92a/157646bb9c8b4247a78dd6c67825e0e8 [2020-10-13 14:02:22,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:02:22,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:02:22,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:22,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:02:22,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:02:22,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:22" (1/1) ... [2020-10-13 14:02:22,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fd04c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:22, skipping insertion in model container [2020-10-13 14:02:22,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:22" (1/1) ... [2020-10-13 14:02:22,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:02:22,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:02:22,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:22,920 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:02:23,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:23,097 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:02:23,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23 WrapperNode [2020-10-13 14:02:23,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:23,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:02:23,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:02:23,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:02:23,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (1/1) ... [2020-10-13 14:02:23,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:02:23,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:02:23,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:02:23,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:02:23,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (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 [2020-10-13 14:02:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:02:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:02:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:02:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:02:23,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:02:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:02:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:02:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:02:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:02:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:02:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:02:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:02:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:02:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:02:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:02:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:02:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:02:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:02:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:02:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:02:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:02:24,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:02:24,699 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:02:24,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:24 BoogieIcfgContainer [2020-10-13 14:02:24,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:02:24,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:02:24,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:02:24,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:02:24,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:02:22" (1/3) ... [2020-10-13 14:02:24,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c3adc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:24, skipping insertion in model container [2020-10-13 14:02:24,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:23" (2/3) ... [2020-10-13 14:02:24,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c3adc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:24, skipping insertion in model container [2020-10-13 14:02:24,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:24" (3/3) ... [2020-10-13 14:02:24,715 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 14:02:24,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:02:24,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:02:24,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:02:24,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:02:24,778 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:02:24,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:02:24,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:02:24,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:02:24,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:02:24,779 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:02:24,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:02:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-13 14:02:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 14:02:24,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:24,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:24,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:24,831 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-13 14:02:24,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:24,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271341769] [2020-10-13 14:02:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 14:02:30,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:02:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:02:30,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:02:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 14:02:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:02:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:02:31,102 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:02:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:31,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:02:31,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:31,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271341769] [2020-10-13 14:02:31,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:31,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:02:31,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400058881] [2020-10-13 14:02:31,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:02:31,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:02:31,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:02:31,203 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 7 states. [2020-10-13 14:02:31,696 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-13 14:02:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:34,262 INFO L93 Difference]: Finished difference Result 1372 states and 2345 transitions. [2020-10-13 14:02:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:02:34,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 14:02:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:34,299 INFO L225 Difference]: With dead ends: 1372 [2020-10-13 14:02:34,299 INFO L226 Difference]: Without dead ends: 1209 [2020-10-13 14:02:34,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:02:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-13 14:02:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 445. [2020-10-13 14:02:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-13 14:02:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 742 transitions. [2020-10-13 14:02:34,412 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 742 transitions. Word has length 115 [2020-10-13 14:02:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:34,413 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 742 transitions. [2020-10-13 14:02:34,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:02:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 742 transitions. [2020-10-13 14:02:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 14:02:34,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:34,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:34,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:02:34,420 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:34,421 INFO L82 PathProgramCache]: Analyzing trace with hash 238492466, now seen corresponding path program 1 times [2020-10-13 14:02:34,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:34,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033694965] [2020-10-13 14:02:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:39,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:39,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 14:02:39,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:02:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:02:39,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:02:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 14:02:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:02:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:02:39,936 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:02:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:39,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:39,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:39,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:02:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:39,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033694965] [2020-10-13 14:02:39,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:39,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:02:39,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025115750] [2020-10-13 14:02:40,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:02:40,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:40,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:02:40,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:02:40,003 INFO L87 Difference]: Start difference. First operand 445 states and 742 transitions. Second operand 8 states. [2020-10-13 14:02:40,422 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-13 14:02:43,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:43,309 INFO L93 Difference]: Finished difference Result 3103 states and 5237 transitions. [2020-10-13 14:02:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:02:43,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-13 14:02:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:43,337 INFO L225 Difference]: With dead ends: 3103 [2020-10-13 14:02:43,337 INFO L226 Difference]: Without dead ends: 2851 [2020-10-13 14:02:43,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:02:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2020-10-13 14:02:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1123. [2020-10-13 14:02:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-13 14:02:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1891 transitions. [2020-10-13 14:02:43,520 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1891 transitions. Word has length 116 [2020-10-13 14:02:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:43,523 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1891 transitions. [2020-10-13 14:02:43,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:02:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1891 transitions. [2020-10-13 14:02:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:02:43,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:43,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:43,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:02:43,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:43,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1258278418, now seen corresponding path program 1 times [2020-10-13 14:02:43,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:43,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490479346] [2020-10-13 14:02:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:02:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:02:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:02:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 14:02:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:02:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:49,041 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:02:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:49,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:49,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:02:49,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:49,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490479346] [2020-10-13 14:02:49,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:49,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:49,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956178083] [2020-10-13 14:02:49,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:49,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:49,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:49,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:49,120 INFO L87 Difference]: Start difference. First operand 1123 states and 1891 transitions. Second operand 5 states. [2020-10-13 14:02:49,540 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:02:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:51,313 INFO L93 Difference]: Finished difference Result 3680 states and 6225 transitions. [2020-10-13 14:02:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:02:51,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 14:02:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:51,331 INFO L225 Difference]: With dead ends: 3680 [2020-10-13 14:02:51,332 INFO L226 Difference]: Without dead ends: 2840 [2020-10-13 14:02:51,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:02:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-10-13 14:02:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1991. [2020-10-13 14:02:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-13 14:02:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 3360 transitions. [2020-10-13 14:02:51,499 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 3360 transitions. Word has length 117 [2020-10-13 14:02:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:51,501 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 3360 transitions. [2020-10-13 14:02:51,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 3360 transitions. [2020-10-13 14:02:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:02:51,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:51,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:51,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:02:51,506 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:51,506 INFO L82 PathProgramCache]: Analyzing trace with hash -408977543, now seen corresponding path program 1 times [2020-10-13 14:02:51,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:51,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83579419] [2020-10-13 14:02:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:56,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:02:56,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:02:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:02:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 14:02:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:02:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:57,067 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:02:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:57,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:57,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:02:57,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:57,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83579419] [2020-10-13 14:02:57,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:57,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:57,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725384721] [2020-10-13 14:02:57,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:57,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:57,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:57,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:57,165 INFO L87 Difference]: Start difference. First operand 1991 states and 3360 transitions. Second operand 5 states. [2020-10-13 14:02:57,721 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:02:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:59,810 INFO L93 Difference]: Finished difference Result 7024 states and 11879 transitions. [2020-10-13 14:02:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:02:59,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 14:02:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:59,839 INFO L225 Difference]: With dead ends: 7024 [2020-10-13 14:02:59,840 INFO L226 Difference]: Without dead ends: 5353 [2020-10-13 14:02:59,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:02:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2020-10-13 14:03:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3666. [2020-10-13 14:03:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-10-13 14:03:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6188 transitions. [2020-10-13 14:03:00,119 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6188 transitions. Word has length 118 [2020-10-13 14:03:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:00,120 INFO L479 AbstractCegarLoop]: Abstraction has 3666 states and 6188 transitions. [2020-10-13 14:03:00,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6188 transitions. [2020-10-13 14:03:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:03:00,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:00,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:00,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:03:00,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1170707965, now seen corresponding path program 1 times [2020-10-13 14:03:00,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:00,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158333139] [2020-10-13 14:03:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:05,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:03:05,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:03:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 14:03:05,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 14:03:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 14:03:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:05,592 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:03:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:05,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:05,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:05,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:05,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158333139] [2020-10-13 14:03:05,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:05,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:05,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745495599] [2020-10-13 14:03:05,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:05,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:05,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:05,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:05,643 INFO L87 Difference]: Start difference. First operand 3666 states and 6188 transitions. Second operand 4 states. [2020-10-13 14:03:06,007 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:03:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:07,982 INFO L93 Difference]: Finished difference Result 9622 states and 16254 transitions. [2020-10-13 14:03:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:07,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:03:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:08,005 INFO L225 Difference]: With dead ends: 9622 [2020-10-13 14:03:08,005 INFO L226 Difference]: Without dead ends: 6240 [2020-10-13 14:03:08,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-10-13 14:03:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 6238. [2020-10-13 14:03:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6238 states. [2020-10-13 14:03:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 10498 transitions. [2020-10-13 14:03:08,538 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 10498 transitions. Word has length 119 [2020-10-13 14:03:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:08,539 INFO L479 AbstractCegarLoop]: Abstraction has 6238 states and 10498 transitions. [2020-10-13 14:03:08,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 10498 transitions. [2020-10-13 14:03:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:03:08,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:08,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:08,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:03:08,542 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash 154103829, now seen corresponding path program 1 times [2020-10-13 14:03:08,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:08,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127340605] [2020-10-13 14:03:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:13,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:03:13,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:03:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 14:03:13,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 14:03:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:03:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:14,012 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:03:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:03:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:14,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127340605] [2020-10-13 14:03:14,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:14,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:14,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901446215] [2020-10-13 14:03:14,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:14,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:14,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:14,066 INFO L87 Difference]: Start difference. First operand 6238 states and 10498 transitions. Second operand 5 states. [2020-10-13 14:03:14,461 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:03:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:16,906 INFO L93 Difference]: Finished difference Result 24046 states and 40501 transitions. [2020-10-13 14:03:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:16,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 14:03:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:16,979 INFO L225 Difference]: With dead ends: 24046 [2020-10-13 14:03:16,980 INFO L226 Difference]: Without dead ends: 18110 [2020-10-13 14:03:16,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:03:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18110 states. [2020-10-13 14:03:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18110 to 12116. [2020-10-13 14:03:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12116 states. [2020-10-13 14:03:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12116 states to 12116 states and 20354 transitions. [2020-10-13 14:03:17,642 INFO L78 Accepts]: Start accepts. Automaton has 12116 states and 20354 transitions. Word has length 119 [2020-10-13 14:03:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:17,642 INFO L479 AbstractCegarLoop]: Abstraction has 12116 states and 20354 transitions. [2020-10-13 14:03:17,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:17,643 INFO L276 IsEmpty]: Start isEmpty. Operand 12116 states and 20354 transitions. [2020-10-13 14:03:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:03:17,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:17,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:17,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:03:17,646 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:17,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507399, now seen corresponding path program 1 times [2020-10-13 14:03:17,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:17,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292961193] [2020-10-13 14:03:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:18,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:22,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:03:22,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:03:22,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:03:22,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 14:03:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 14:03:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:23,140 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:03:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:23,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:23,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:03:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:23,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292961193] [2020-10-13 14:03:23,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:23,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:23,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253605886] [2020-10-13 14:03:23,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:23,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:23,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:23,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:23,188 INFO L87 Difference]: Start difference. First operand 12116 states and 20354 transitions. Second operand 4 states. [2020-10-13 14:03:23,564 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:03:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:26,110 INFO L93 Difference]: Finished difference Result 32888 states and 55252 transitions. [2020-10-13 14:03:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:26,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:03:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:26,169 INFO L225 Difference]: With dead ends: 32888 [2020-10-13 14:03:26,169 INFO L226 Difference]: Without dead ends: 21058 [2020-10-13 14:03:26,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21058 states. [2020-10-13 14:03:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21058 to 20999. [2020-10-13 14:03:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20999 states. [2020-10-13 14:03:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 35161 transitions. [2020-10-13 14:03:27,374 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 35161 transitions. Word has length 119 [2020-10-13 14:03:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:27,375 INFO L479 AbstractCegarLoop]: Abstraction has 20999 states and 35161 transitions. [2020-10-13 14:03:27,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 35161 transitions. [2020-10-13 14:03:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:03:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:27,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:27,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:03:27,378 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:27,378 INFO L82 PathProgramCache]: Analyzing trace with hash -916770661, now seen corresponding path program 1 times [2020-10-13 14:03:27,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:27,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317908159] [2020-10-13 14:03:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 14:03:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 14:03:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:32,764 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:03:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:32,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:32,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317908159] [2020-10-13 14:03:32,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:32,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:32,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081595425] [2020-10-13 14:03:32,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:32,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:32,803 INFO L87 Difference]: Start difference. First operand 20999 states and 35161 transitions. Second operand 4 states. [2020-10-13 14:03:33,156 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:03:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:36,502 INFO L93 Difference]: Finished difference Result 56827 states and 95099 transitions. [2020-10-13 14:03:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:36,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:03:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:36,602 INFO L225 Difference]: With dead ends: 56827 [2020-10-13 14:03:36,603 INFO L226 Difference]: Without dead ends: 36049 [2020-10-13 14:03:36,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:36,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36049 states. [2020-10-13 14:03:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36049 to 36019. [2020-10-13 14:03:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36019 states. [2020-10-13 14:03:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36019 states to 36019 states and 60026 transitions. [2020-10-13 14:03:38,671 INFO L78 Accepts]: Start accepts. Automaton has 36019 states and 60026 transitions. Word has length 119 [2020-10-13 14:03:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:38,671 INFO L479 AbstractCegarLoop]: Abstraction has 36019 states and 60026 transitions. [2020-10-13 14:03:38,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 36019 states and 60026 transitions. [2020-10-13 14:03:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:03:38,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:38,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:38,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:03:38,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:38,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1305514857, now seen corresponding path program 1 times [2020-10-13 14:03:38,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:38,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141665537] [2020-10-13 14:03:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:43,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:43,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:03:43,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:03:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:03:43,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 14:03:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:03:43,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:44,115 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:03:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:44,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:44,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:03:44,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:44,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:44,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141665537] [2020-10-13 14:03:44,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:44,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:44,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315090789] [2020-10-13 14:03:44,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:44,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:44,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:44,155 INFO L87 Difference]: Start difference. First operand 36019 states and 60026 transitions. Second operand 4 states. [2020-10-13 14:03:44,522 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:03:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:49,199 INFO L93 Difference]: Finished difference Result 96215 states and 160124 transitions. [2020-10-13 14:03:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:49,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:03:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:49,386 INFO L225 Difference]: With dead ends: 96215 [2020-10-13 14:03:49,386 INFO L226 Difference]: Without dead ends: 60389 [2020-10-13 14:03:49,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60389 states. [2020-10-13 14:03:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60389 to 60387. [2020-10-13 14:03:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60387 states. [2020-10-13 14:03:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60387 states to 60387 states and 99962 transitions. [2020-10-13 14:03:52,735 INFO L78 Accepts]: Start accepts. Automaton has 60387 states and 99962 transitions. Word has length 119 [2020-10-13 14:03:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:52,735 INFO L479 AbstractCegarLoop]: Abstraction has 60387 states and 99962 transitions. [2020-10-13 14:03:52,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 60387 states and 99962 transitions. [2020-10-13 14:03:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 14:03:52,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:52,737 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] [2020-10-13 14:03:52,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:03:52,737 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:52,738 INFO L82 PathProgramCache]: Analyzing trace with hash 575262117, now seen corresponding path program 1 times [2020-10-13 14:03:52,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:52,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702825598] [2020-10-13 14:03:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:56,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 14:03:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:03:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3616 [2020-10-13 14:03:56,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 14:03:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:03:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:56,730 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:03:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:03:56,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:56,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702825598] [2020-10-13 14:03:56,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:56,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:56,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790165626] [2020-10-13 14:03:56,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:56,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:56,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:56,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:56,765 INFO L87 Difference]: Start difference. First operand 60387 states and 99962 transitions. Second operand 4 states. [2020-10-13 14:04:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:02,942 INFO L93 Difference]: Finished difference Result 155175 states and 255388 transitions. [2020-10-13 14:04:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:02,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-13 14:04:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:03,149 INFO L225 Difference]: With dead ends: 155175 [2020-10-13 14:04:03,150 INFO L226 Difference]: Without dead ends: 94981 [2020-10-13 14:04:03,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94981 states. [2020-10-13 14:04:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94981 to 94979. [2020-10-13 14:04:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94979 states. [2020-10-13 14:04:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94979 states to 94979 states and 153818 transitions. [2020-10-13 14:04:10,267 INFO L78 Accepts]: Start accepts. Automaton has 94979 states and 153818 transitions. Word has length 121 [2020-10-13 14:04:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:10,268 INFO L479 AbstractCegarLoop]: Abstraction has 94979 states and 153818 transitions. [2020-10-13 14:04:10,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 94979 states and 153818 transitions. [2020-10-13 14:04:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 14:04:10,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:10,269 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] [2020-10-13 14:04:10,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:04:10,270 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:10,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:10,270 INFO L82 PathProgramCache]: Analyzing trace with hash -588077429, now seen corresponding path program 1 times [2020-10-13 14:04:10,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:10,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043601981] [2020-10-13 14:04:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 14:04:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:04:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-13 14:04:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:04:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:04:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:12,285 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:04:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:12,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:04:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:12,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043601981] [2020-10-13 14:04:12,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:12,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:12,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731443697] [2020-10-13 14:04:12,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:12,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:12,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:12,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:12,341 INFO L87 Difference]: Start difference. First operand 94979 states and 153818 transitions. Second operand 4 states. [2020-10-13 14:04:12,690 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 14:04:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:21,606 INFO L93 Difference]: Finished difference Result 206565 states and 334802 transitions. [2020-10-13 14:04:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:21,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-13 14:04:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:21,797 INFO L225 Difference]: With dead ends: 206565 [2020-10-13 14:04:21,797 INFO L226 Difference]: Without dead ends: 111779 [2020-10-13 14:04:21,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111779 states. [2020-10-13 14:04:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111779 to 111777. [2020-10-13 14:04:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111777 states. [2020-10-13 14:04:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111777 states to 111777 states and 180472 transitions. [2020-10-13 14:04:30,380 INFO L78 Accepts]: Start accepts. Automaton has 111777 states and 180472 transitions. Word has length 122 [2020-10-13 14:04:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:30,380 INFO L479 AbstractCegarLoop]: Abstraction has 111777 states and 180472 transitions. [2020-10-13 14:04:30,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 111777 states and 180472 transitions. [2020-10-13 14:04:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 14:04:30,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:30,382 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] [2020-10-13 14:04:30,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:04:30,382 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1122051790, now seen corresponding path program 1 times [2020-10-13 14:04:30,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:30,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583509440] [2020-10-13 14:04:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:35,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 14:04:35,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:04:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:04:35,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:04:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 14:04:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:04:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:35,890 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:04:35,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:35,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:04:35,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:35,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583509440] [2020-10-13 14:04:35,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:35,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:04:35,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617592129] [2020-10-13 14:04:35,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:04:35,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:35,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:04:35,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:04:35,952 INFO L87 Difference]: Start difference. First operand 111777 states and 180472 transitions. Second operand 7 states. [2020-10-13 14:04:36,420 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:04:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:52,942 INFO L93 Difference]: Finished difference Result 378481 states and 611888 transitions. [2020-10-13 14:04:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:04:52,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-13 14:04:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:53,364 INFO L225 Difference]: With dead ends: 378481 [2020-10-13 14:04:53,365 INFO L226 Difference]: Without dead ends: 266899 [2020-10-13 14:04:53,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:04:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266899 states. [2020-10-13 14:05:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266899 to 111777. [2020-10-13 14:05:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111777 states. [2020-10-13 14:05:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111777 states to 111777 states and 180096 transitions. [2020-10-13 14:05:05,645 INFO L78 Accepts]: Start accepts. Automaton has 111777 states and 180096 transitions. Word has length 124 [2020-10-13 14:05:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:05,645 INFO L479 AbstractCegarLoop]: Abstraction has 111777 states and 180096 transitions. [2020-10-13 14:05:05,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:05:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 111777 states and 180096 transitions. [2020-10-13 14:05:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 14:05:05,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:05,648 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] [2020-10-13 14:05:05,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:05:05,649 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:05,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1560061569, now seen corresponding path program 1 times [2020-10-13 14:05:05,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:05,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096676155] [2020-10-13 14:05:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:10,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 14:05:10,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:05:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:05:10,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 14:05:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:05:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:11,051 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:05:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:11,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:11,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:11,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:05:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:11,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:11,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096676155] [2020-10-13 14:05:11,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:11,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:11,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115235552] [2020-10-13 14:05:11,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:11,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:11,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:11,100 INFO L87 Difference]: Start difference. First operand 111777 states and 180096 transitions. Second operand 4 states. [2020-10-13 14:05:11,451 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 14:05:21,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:21,086 INFO L93 Difference]: Finished difference Result 252699 states and 406645 transitions. [2020-10-13 14:05:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:21,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 14:05:21,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:21,295 INFO L225 Difference]: With dead ends: 252699 [2020-10-13 14:05:21,295 INFO L226 Difference]: Without dead ends: 141117 [2020-10-13 14:05:21,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141117 states. [2020-10-13 14:05:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141117 to 141115. [2020-10-13 14:05:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141115 states. [2020-10-13 14:05:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141115 states to 141115 states and 226427 transitions. [2020-10-13 14:05:31,586 INFO L78 Accepts]: Start accepts. Automaton has 141115 states and 226427 transitions. Word has length 127 [2020-10-13 14:05:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:31,586 INFO L479 AbstractCegarLoop]: Abstraction has 141115 states and 226427 transitions. [2020-10-13 14:05:31,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 141115 states and 226427 transitions. [2020-10-13 14:05:31,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 14:05:31,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:31,587 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] [2020-10-13 14:05:31,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:05:31,588 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:31,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:31,588 INFO L82 PathProgramCache]: Analyzing trace with hash -309812348, now seen corresponding path program 1 times [2020-10-13 14:05:31,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:31,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020739690] [2020-10-13 14:05:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 14:05:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:05:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:36,981 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:05:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:05:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:37,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020739690] [2020-10-13 14:05:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:37,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:37,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389108987] [2020-10-13 14:05:37,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:37,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:37,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:37,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:37,017 INFO L87 Difference]: Start difference. First operand 141115 states and 226427 transitions. Second operand 4 states. [2020-10-13 14:05:37,385 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 14:05:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:49,423 INFO L93 Difference]: Finished difference Result 318910 states and 511103 transitions. [2020-10-13 14:05:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:49,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-13 14:05:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:49,710 INFO L225 Difference]: With dead ends: 318910 [2020-10-13 14:05:49,710 INFO L226 Difference]: Without dead ends: 178008 [2020-10-13 14:05:49,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178008 states.