/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/eca-rers2012/Problem03_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:21:22,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:21:22,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:21:22,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:21:22,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:21:22,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:21:22,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:21:22,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:21:22,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:21:22,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:21:22,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:21:22,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:21:22,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:21:22,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:21:22,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:21:22,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:21:22,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:21:22,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:21:22,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:21:22,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:21:22,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:21:22,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:21:22,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:21:22,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:21:22,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:21:22,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:21:22,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:21:22,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:21:22,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:21:22,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:21:22,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:21:22,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:21:22,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:21:22,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:21:22,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:21:22,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:21:22,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:21:22,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:21:22,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:21:22,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:21:22,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:21:22,125 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 06:21:22,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:21:22,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:21:22,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:21:22,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:21:22,154 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:21:22,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:21:22,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:21:22,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:21:22,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:21:22,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:21:22,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:21:22,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:21:22,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:21:22,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:21:22,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:21:22,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:21:22,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:21:22,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:21:22,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:21:22,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:21:22,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:21:22,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:21:22,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:21:22,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:21:22,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:21:22,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:21:22,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:21:22,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:21:22,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:21:22,159 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 06:21:22,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:21:22,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:21:22,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:21:22,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:21:22,493 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:21:22,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label29.c [2020-10-13 06:21:22,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b27ce956/f40420d5647f42d994251997bfeb2e87/FLAG00ca756c2 [2020-10-13 06:21:23,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:21:23,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label29.c [2020-10-13 06:21:23,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b27ce956/f40420d5647f42d994251997bfeb2e87/FLAG00ca756c2 [2020-10-13 06:21:23,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b27ce956/f40420d5647f42d994251997bfeb2e87 [2020-10-13 06:21:23,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:21:23,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:21:23,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:23,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:21:23,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:21:23,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:23" (1/1) ... [2020-10-13 06:21:23,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:23, skipping insertion in model container [2020-10-13 06:21:23,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:23" (1/1) ... [2020-10-13 06:21:23,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:21:23,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:21:24,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:24,288 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:21:24,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:24,599 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:21:24,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24 WrapperNode [2020-10-13 06:21:24,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:24,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:21:24,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:21:24,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:21:24,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (1/1) ... [2020-10-13 06:21:24,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:21:24,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:21:24,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:21:24,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:21:24,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (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 06:21:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:21:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:21:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:21:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:21:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:21:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:21:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:21:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:21:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:21:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:21:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:21:26,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:21:26,756 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:21:26,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:26 BoogieIcfgContainer [2020-10-13 06:21:26,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:21:26,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:21:26,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:21:26,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:21:26,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:21:23" (1/3) ... [2020-10-13 06:21:26,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c5570e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:26, skipping insertion in model container [2020-10-13 06:21:26,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:24" (2/3) ... [2020-10-13 06:21:26,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c5570e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:26, skipping insertion in model container [2020-10-13 06:21:26,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:26" (3/3) ... [2020-10-13 06:21:26,772 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2020-10-13 06:21:26,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:21:26,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:21:26,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:21:26,831 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:21:26,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:21:26,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:21:26,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:21:26,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:21:26,832 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:21:26,832 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:21:26,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:21:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:21:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 06:21:26,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:26,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:26,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:26,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:26,888 INFO L82 PathProgramCache]: Analyzing trace with hash -30261395, now seen corresponding path program 1 times [2020-10-13 06:21:26,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:26,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802547929] [2020-10-13 06:21:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4570 [2020-10-13 06:21:31,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:21:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:21:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:21:33,398 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 06:21:33,652 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 06:21:33,982 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2020-10-13 06:21:34,380 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2020-10-13 06:21:34,972 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 95 [2020-10-13 06:21:35,492 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 89 [2020-10-13 06:21:35,998 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 83 [2020-10-13 06:21:36,521 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 76 [2020-10-13 06:21:36,909 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 59 [2020-10-13 06:21:37,080 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:37,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:37,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:37,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:21:37,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:21:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:37,720 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 06:21:37,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802547929] [2020-10-13 06:21:37,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:21:37,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:21:37,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509083538] [2020-10-13 06:21:37,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:21:37,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:21:37,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:37,742 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:21:38,162 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 06:21:39,032 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 188 [2020-10-13 06:21:39,905 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-10-13 06:21:40,890 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-13 06:21:42,476 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 230 DAG size of output: 203 [2020-10-13 06:21:44,187 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 230 DAG size of output: 200 [2020-10-13 06:21:45,975 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 234 DAG size of output: 196 [2020-10-13 06:21:49,817 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 236 DAG size of output: 193 [2020-10-13 06:21:51,356 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 238 DAG size of output: 189 [2020-10-13 06:21:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:54,481 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:21:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:21:54,486 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2020-10-13 06:21:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:54,503 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:21:54,504 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:21:54,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:21:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:21:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:21:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:21:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:21:54,586 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 184 [2020-10-13 06:21:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:54,587 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:21:54,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:21:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:21:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 06:21:54,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:54,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:54,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:21:54,593 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:54,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1163875162, now seen corresponding path program 1 times [2020-10-13 06:21:54,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:54,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523499611] [2020-10-13 06:21:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:58,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 06:21:58,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3957 [2020-10-13 06:21:58,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:21:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:21:58,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:59,393 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-13 06:21:59,548 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-13 06:21:59,993 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-13 06:22:00,336 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-10-13 06:22:00,585 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-13 06:22:00,750 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-13 06:22:00,900 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-13 06:22:01,061 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:01,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:01,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:22:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:22:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:01,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:01,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:01,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:22:01,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:22:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:22:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:01,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523499611] [2020-10-13 06:22:01,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:01,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:22:01,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055657349] [2020-10-13 06:22:01,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:22:01,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:01,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:22:01,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:22:01,874 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:22:02,133 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 06:22:02,654 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 86 [2020-10-13 06:22:03,137 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-13 06:22:03,715 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-13 06:22:04,337 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 173 [2020-10-13 06:22:05,423 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 172 [2020-10-13 06:22:07,173 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 171 [2020-10-13 06:22:09,512 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 170 [2020-10-13 06:22:12,211 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-13 06:22:13,024 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 167 [2020-10-13 06:22:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:14,934 INFO L93 Difference]: Finished difference Result 757 states and 1213 transitions. [2020-10-13 06:22:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:22:14,937 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-10-13 06:22:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:14,942 INFO L225 Difference]: With dead ends: 757 [2020-10-13 06:22:14,943 INFO L226 Difference]: Without dead ends: 514 [2020-10-13 06:22:14,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2020-10-13 06:22:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-13 06:22:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2020-10-13 06:22:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-13 06:22:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 678 transitions. [2020-10-13 06:22:14,983 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 678 transitions. Word has length 195 [2020-10-13 06:22:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:14,984 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 678 transitions. [2020-10-13 06:22:14,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:22:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 678 transitions. [2020-10-13 06:22:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 06:22:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:14,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:22:14,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:14,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1410178830, now seen corresponding path program 1 times [2020-10-13 06:22:14,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:14,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786548860] [2020-10-13 06:22:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 06:22:16,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-10-13 06:22:16,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:22:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:17,220 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:17,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:17,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:22:17,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:17,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:17,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:22:17,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:17,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786548860] [2020-10-13 06:22:17,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:17,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:17,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121682485] [2020-10-13 06:22:17,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:17,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:17,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:17,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:17,668 INFO L87 Difference]: Start difference. First operand 510 states and 678 transitions. Second operand 5 states. [2020-10-13 06:22:18,037 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:22:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:20,639 INFO L93 Difference]: Finished difference Result 934 states and 1399 transitions. [2020-10-13 06:22:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:22:20,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-13 06:22:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:20,644 INFO L225 Difference]: With dead ends: 934 [2020-10-13 06:22:20,644 INFO L226 Difference]: Without dead ends: 500 [2020-10-13 06:22:20,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-13 06:22:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2020-10-13 06:22:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-13 06:22:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 635 transitions. [2020-10-13 06:22:20,670 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 635 transitions. Word has length 205 [2020-10-13 06:22:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:20,671 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 635 transitions. [2020-10-13 06:22:20,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:22:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 635 transitions. [2020-10-13 06:22:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 06:22:20,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:20,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:20,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:22:20,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:20,676 INFO L82 PathProgramCache]: Analyzing trace with hash -682245206, now seen corresponding path program 1 times [2020-10-13 06:22:20,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:20,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740964062] [2020-10-13 06:22:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:23,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 06:22:23,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:22:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-10-13 06:22:23,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:22:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:22:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:22:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:23,710 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:23,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:23,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:22:23,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:23,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:23,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:23,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:22:23,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:23,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:22:23,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:22:23,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:22:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:23,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740964062] [2020-10-13 06:22:23,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:22:23,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:22:23,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271827114] [2020-10-13 06:22:24,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:24,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:24,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:24,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:24,001 INFO L87 Difference]: Start difference. First operand 498 states and 635 transitions. Second operand 7 states. [2020-10-13 06:22:24,172 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:22:24,668 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:22:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:27,142 INFO L93 Difference]: Finished difference Result 994 states and 1400 transitions. [2020-10-13 06:22:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:27,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-13 06:22:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:27,149 INFO L225 Difference]: With dead ends: 994 [2020-10-13 06:22:27,149 INFO L226 Difference]: Without dead ends: 750 [2020-10-13 06:22:27,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-13 06:22:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 724. [2020-10-13 06:22:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-13 06:22:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 914 transitions. [2020-10-13 06:22:27,184 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 914 transitions. Word has length 216 [2020-10-13 06:22:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:27,184 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 914 transitions. [2020-10-13 06:22:27,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 914 transitions. [2020-10-13 06:22:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 06:22:27,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:27,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:27,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:22:27,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:27,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:27,190 INFO L82 PathProgramCache]: Analyzing trace with hash -876016426, now seen corresponding path program 1 times [2020-10-13 06:22:27,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:27,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189063587] [2020-10-13 06:22:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:29,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 06:22:29,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2480 [2020-10-13 06:22:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:22:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-13 06:22:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:29,977 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:29,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:29,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:30,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:30,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:22:30,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:22:30,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:22:30,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:30,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189063587] [2020-10-13 06:22:30,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:30,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:30,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092024550] [2020-10-13 06:22:30,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:30,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:30,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:30,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:30,173 INFO L87 Difference]: Start difference. First operand 724 states and 914 transitions. Second operand 5 states. [2020-10-13 06:22:30,487 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:32,639 INFO L93 Difference]: Finished difference Result 1636 states and 2196 transitions. [2020-10-13 06:22:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:22:32,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 06:22:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:32,647 INFO L225 Difference]: With dead ends: 1636 [2020-10-13 06:22:32,647 INFO L226 Difference]: Without dead ends: 1166 [2020-10-13 06:22:32,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-10-13 06:22:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1162. [2020-10-13 06:22:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2020-10-13 06:22:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1470 transitions. [2020-10-13 06:22:32,692 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1470 transitions. Word has length 219 [2020-10-13 06:22:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:32,694 INFO L479 AbstractCegarLoop]: Abstraction has 1162 states and 1470 transitions. [2020-10-13 06:22:32,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:22:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1470 transitions. [2020-10-13 06:22:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 06:22:32,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:32,699 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:32,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:22:32,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:32,700 INFO L82 PathProgramCache]: Analyzing trace with hash -725230050, now seen corresponding path program 1 times [2020-10-13 06:22:32,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:32,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357445901] [2020-10-13 06:22:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:32,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:32,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-13 06:22:36,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:22:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3786 [2020-10-13 06:22:36,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:22:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:22:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:36,706 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:36,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:22:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:22:36,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:22:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:22:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:22:36,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 06:22:36,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:22:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:37,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357445901] [2020-10-13 06:22:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:37,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:37,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22848781] [2020-10-13 06:22:37,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:37,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:37,058 INFO L87 Difference]: Start difference. First operand 1162 states and 1470 transitions. Second operand 7 states. [2020-10-13 06:22:37,467 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:37,907 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:22:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:40,474 INFO L93 Difference]: Finished difference Result 3025 states and 4269 transitions. [2020-10-13 06:22:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:22:40,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-13 06:22:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:40,488 INFO L225 Difference]: With dead ends: 3025 [2020-10-13 06:22:40,488 INFO L226 Difference]: Without dead ends: 2117 [2020-10-13 06:22:40,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:22:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2020-10-13 06:22:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2045. [2020-10-13 06:22:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2020-10-13 06:22:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2525 transitions. [2020-10-13 06:22:40,587 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2525 transitions. Word has length 233 [2020-10-13 06:22:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:40,587 INFO L479 AbstractCegarLoop]: Abstraction has 2045 states and 2525 transitions. [2020-10-13 06:22:40,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2525 transitions. [2020-10-13 06:22:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 06:22:40,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:40,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:40,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:22:40,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:40,597 INFO L82 PathProgramCache]: Analyzing trace with hash 157781882, now seen corresponding path program 1 times [2020-10-13 06:22:40,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:40,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913480151] [2020-10-13 06:22:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:43,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:43,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-13 06:22:43,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2633 [2020-10-13 06:22:43,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:22:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:22:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:43,447 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:43,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:43,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:22:43,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:43,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:43,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:22:43,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:22:43,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:22:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:22:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:43,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:43,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:22:43,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:22:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:22:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:43,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913480151] [2020-10-13 06:22:43,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:43,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:43,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578181130] [2020-10-13 06:22:43,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:43,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:43,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:43,820 INFO L87 Difference]: Start difference. First operand 2045 states and 2525 transitions. Second operand 7 states. [2020-10-13 06:22:44,070 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:22:44,483 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:22:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:47,959 INFO L93 Difference]: Finished difference Result 5682 states and 7244 transitions. [2020-10-13 06:22:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:47,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-13 06:22:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:47,980 INFO L225 Difference]: With dead ends: 5682 [2020-10-13 06:22:47,980 INFO L226 Difference]: Without dead ends: 3891 [2020-10-13 06:22:47,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2020-10-13 06:22:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3835. [2020-10-13 06:22:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3835 states. [2020-10-13 06:22:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 4657 transitions. [2020-10-13 06:22:48,100 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 4657 transitions. Word has length 235 [2020-10-13 06:22:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:48,101 INFO L479 AbstractCegarLoop]: Abstraction has 3835 states and 4657 transitions. [2020-10-13 06:22:48,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 4657 transitions. [2020-10-13 06:22:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 06:22:48,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:48,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:48,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:22:48,116 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash 631380687, now seen corresponding path program 1 times [2020-10-13 06:22:48,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:48,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590106745] [2020-10-13 06:22:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:48,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:51,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:51,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 06:22:51,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3689 [2020-10-13 06:22:51,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:22:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-13 06:22:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:52,210 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:52,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:52,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:22:52,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:52,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 06:22:52,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:22:52,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:52,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590106745] [2020-10-13 06:22:52,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:52,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:52,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095496683] [2020-10-13 06:22:52,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:52,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:52,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:52,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:52,511 INFO L87 Difference]: Start difference. First operand 3835 states and 4657 transitions. Second operand 5 states. [2020-10-13 06:22:52,666 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:55,108 INFO L93 Difference]: Finished difference Result 10415 states and 12944 transitions. [2020-10-13 06:22:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:22:55,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-13 06:22:55,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:55,143 INFO L225 Difference]: With dead ends: 10415 [2020-10-13 06:22:55,143 INFO L226 Difference]: Without dead ends: 6834 [2020-10-13 06:22:55,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2020-10-13 06:22:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 6812. [2020-10-13 06:22:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6812 states. [2020-10-13 06:22:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 7959 transitions. [2020-10-13 06:22:55,302 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 7959 transitions. Word has length 290 [2020-10-13 06:22:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:55,303 INFO L479 AbstractCegarLoop]: Abstraction has 6812 states and 7959 transitions. [2020-10-13 06:22:55,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:22:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 7959 transitions. [2020-10-13 06:22:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 06:22:55,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:55,323 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:55,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:22:55,323 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:55,324 INFO L82 PathProgramCache]: Analyzing trace with hash -396423225, now seen corresponding path program 1 times [2020-10-13 06:22:55,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:55,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425994079] [2020-10-13 06:22:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:55,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 06:23:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:23:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 06:23:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:00,572 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:00,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:00,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:23:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:23:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:00,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:23:00,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:00,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:23:00,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:23:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:23:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:23:00,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:23:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:23:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 06:23:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:23:00,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:23:00,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 06:23:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 147 proven. 13 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 06:23:01,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425994079] [2020-10-13 06:23:01,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:01,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:01,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465999900] [2020-10-13 06:23:01,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:01,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:01,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:01,170 INFO L87 Difference]: Start difference. First operand 6812 states and 7959 transitions. Second operand 7 states. [2020-10-13 06:23:01,400 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:02,478 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:23:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:04,526 INFO L93 Difference]: Finished difference Result 16449 states and 19743 transitions. [2020-10-13 06:23:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:04,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-13 06:23:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:04,569 INFO L225 Difference]: With dead ends: 16449 [2020-10-13 06:23:04,569 INFO L226 Difference]: Without dead ends: 9891 [2020-10-13 06:23:04,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2020-10-13 06:23:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 9829. [2020-10-13 06:23:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9829 states. [2020-10-13 06:23:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9829 states to 9829 states and 11541 transitions. [2020-10-13 06:23:04,828 INFO L78 Accepts]: Start accepts. Automaton has 9829 states and 11541 transitions. Word has length 308 [2020-10-13 06:23:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:04,828 INFO L479 AbstractCegarLoop]: Abstraction has 9829 states and 11541 transitions. [2020-10-13 06:23:04,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9829 states and 11541 transitions. [2020-10-13 06:23:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 06:23:04,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:04,857 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:04,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:23:04,858 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1828065829, now seen corresponding path program 1 times [2020-10-13 06:23:04,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:04,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590848035] [2020-10-13 06:23:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:09,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 06:23:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:23:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:23:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 06:23:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:23:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:10,162 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:10,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:10,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:10,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:23:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:23:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:23:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:23:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:23:10,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590848035] [2020-10-13 06:23:10,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:10,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:10,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515922138] [2020-10-13 06:23:10,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:10,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:10,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:10,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:10,682 INFO L87 Difference]: Start difference. First operand 9829 states and 11541 transitions. Second operand 7 states. [2020-10-13 06:23:10,835 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:12,083 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:13,689 INFO L93 Difference]: Finished difference Result 23777 states and 28985 transitions. [2020-10-13 06:23:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:13,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-13 06:23:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:13,755 INFO L225 Difference]: With dead ends: 23777 [2020-10-13 06:23:13,755 INFO L226 Difference]: Without dead ends: 14202 [2020-10-13 06:23:13,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14202 states. [2020-10-13 06:23:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 14076. [2020-10-13 06:23:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14076 states. [2020-10-13 06:23:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 16580 transitions. [2020-10-13 06:23:14,092 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 16580 transitions. Word has length 320 [2020-10-13 06:23:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:14,093 INFO L479 AbstractCegarLoop]: Abstraction has 14076 states and 16580 transitions. [2020-10-13 06:23:14,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 16580 transitions. [2020-10-13 06:23:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-13 06:23:14,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:14,129 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:14,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:23:14,129 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1968672916, now seen corresponding path program 1 times [2020-10-13 06:23:14,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:14,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083014005] [2020-10-13 06:23:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:23:19,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,470 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:19,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:19,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:23:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:23:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:23:19,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:23:19,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:23:19,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 06:23:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-13 06:23:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:23:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:23:19,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 06:23:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 224 proven. 24 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 06:23:19,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083014005] [2020-10-13 06:23:19,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:19,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:19,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216244837] [2020-10-13 06:23:19,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:19,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:19,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:19,982 INFO L87 Difference]: Start difference. First operand 14076 states and 16580 transitions. Second operand 7 states. [2020-10-13 06:23:20,646 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:21,105 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:23,546 INFO L93 Difference]: Finished difference Result 31586 states and 37948 transitions. [2020-10-13 06:23:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:23,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-13 06:23:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:23,640 INFO L225 Difference]: With dead ends: 31586 [2020-10-13 06:23:23,640 INFO L226 Difference]: Without dead ends: 17764 [2020-10-13 06:23:23,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17764 states. [2020-10-13 06:23:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17764 to 17690. [2020-10-13 06:23:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17690 states. [2020-10-13 06:23:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17690 states to 17690 states and 21161 transitions. [2020-10-13 06:23:24,076 INFO L78 Accepts]: Start accepts. Automaton has 17690 states and 21161 transitions. Word has length 385 [2020-10-13 06:23:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:24,076 INFO L479 AbstractCegarLoop]: Abstraction has 17690 states and 21161 transitions. [2020-10-13 06:23:24,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 17690 states and 21161 transitions. [2020-10-13 06:23:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-13 06:23:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:24,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:24,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:23:24,134 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1928548520, now seen corresponding path program 1 times [2020-10-13 06:23:24,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:24,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766892848] [2020-10-13 06:23:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:23:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:23:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:29,472 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:29,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:29,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:23:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:23:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:29,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:23:29,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:23:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:29,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:23:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 06:23:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 211 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-13 06:23:30,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766892848] [2020-10-13 06:23:30,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:30,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:30,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546728383] [2020-10-13 06:23:30,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:30,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:30,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:30,178 INFO L87 Difference]: Start difference. First operand 17690 states and 21161 transitions. Second operand 7 states. [2020-10-13 06:23:30,870 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:31,073 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:23:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:34,432 INFO L93 Difference]: Finished difference Result 41091 states and 49484 transitions. [2020-10-13 06:23:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:34,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-13 06:23:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:34,496 INFO L225 Difference]: With dead ends: 41091 [2020-10-13 06:23:34,496 INFO L226 Difference]: Without dead ends: 23655 [2020-10-13 06:23:34,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23655 states. [2020-10-13 06:23:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23655 to 23561. [2020-10-13 06:23:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23561 states. [2020-10-13 06:23:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23561 states to 23561 states and 27808 transitions. [2020-10-13 06:23:34,969 INFO L78 Accepts]: Start accepts. Automaton has 23561 states and 27808 transitions. Word has length 386 [2020-10-13 06:23:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:34,970 INFO L479 AbstractCegarLoop]: Abstraction has 23561 states and 27808 transitions. [2020-10-13 06:23:34,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 23561 states and 27808 transitions. [2020-10-13 06:23:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 06:23:35,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:35,023 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:35,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:23:35,023 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:35,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1683401334, now seen corresponding path program 1 times [2020-10-13 06:23:35,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:35,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600406838] [2020-10-13 06:23:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:36,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:37,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:39,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-13 06:23:39,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:23:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3868 [2020-10-13 06:23:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-13 06:23:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:23:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:39,179 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:39,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:39,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:39,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:23:39,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:23:39,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:23:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:39,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:23:39,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:23:39,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 06:23:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 06:23:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:39,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:23:39,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:23:39,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:23:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 06:23:39,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600406838] [2020-10-13 06:23:39,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:39,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:39,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344949249] [2020-10-13 06:23:39,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:39,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:39,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:39,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:39,830 INFO L87 Difference]: Start difference. First operand 23561 states and 27808 transitions. Second operand 7 states. [2020-10-13 06:23:40,433 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:41,039 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:43,208 INFO L93 Difference]: Finished difference Result 51956 states and 62011 transitions. [2020-10-13 06:23:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:43,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2020-10-13 06:23:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:43,283 INFO L225 Difference]: With dead ends: 51956 [2020-10-13 06:23:43,283 INFO L226 Difference]: Without dead ends: 27986 [2020-10-13 06:23:43,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27986 states. [2020-10-13 06:23:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27986 to 27054. [2020-10-13 06:23:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27054 states. [2020-10-13 06:23:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27054 states to 27054 states and 31508 transitions. [2020-10-13 06:23:43,822 INFO L78 Accepts]: Start accepts. Automaton has 27054 states and 31508 transitions. Word has length 390 [2020-10-13 06:23:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:43,823 INFO L479 AbstractCegarLoop]: Abstraction has 27054 states and 31508 transitions. [2020-10-13 06:23:43,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 27054 states and 31508 transitions. [2020-10-13 06:23:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-13 06:23:43,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:43,884 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:43,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:23:43,884 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2011910655, now seen corresponding path program 1 times [2020-10-13 06:23:43,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:43,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114102107] [2020-10-13 06:23:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:49,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-13 06:23:49,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:23:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 06:23:49,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:23:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:23:49,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:49,268 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:49,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:49,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:23:49,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:49,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:49,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 06:23:49,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:49,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:23:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:23:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:23:49,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-13 06:23:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:23:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:23:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 06:23:50,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 06:23:50,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 06:23:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 259 proven. 57 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:23:50,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114102107] [2020-10-13 06:23:50,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:50,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:50,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589883435] [2020-10-13 06:23:50,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:50,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:50,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:50,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:50,593 INFO L87 Difference]: Start difference. First operand 27054 states and 31508 transitions. Second operand 7 states. [2020-10-13 06:23:51,021 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:51,885 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:54,551 INFO L93 Difference]: Finished difference Result 57667 states and 70177 transitions. [2020-10-13 06:23:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:54,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-13 06:23:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:54,651 INFO L225 Difference]: With dead ends: 57667 [2020-10-13 06:23:54,652 INFO L226 Difference]: Without dead ends: 31082 [2020-10-13 06:23:54,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31082 states. [2020-10-13 06:23:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31082 to 30213. [2020-10-13 06:23:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30213 states. [2020-10-13 06:23:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30213 states to 30213 states and 34991 transitions. [2020-10-13 06:23:56,371 INFO L78 Accepts]: Start accepts. Automaton has 30213 states and 34991 transitions. Word has length 418 [2020-10-13 06:23:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:56,372 INFO L479 AbstractCegarLoop]: Abstraction has 30213 states and 34991 transitions. [2020-10-13 06:23:56,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 30213 states and 34991 transitions. [2020-10-13 06:23:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-13 06:23:56,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:56,412 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:56,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:23:56,413 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:56,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:56,413 INFO L82 PathProgramCache]: Analyzing trace with hash -179596272, now seen corresponding path program 1 times [2020-10-13 06:23:56,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:56,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606242534] [2020-10-13 06:23:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:24:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,754 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:01,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:01,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:24:01,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:24:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 06:24:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:24:01,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:24:01,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 06:24:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 06:24:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:24:02,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 06:24:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-13 06:24:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:02,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:24:02,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:24:02,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:02,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:02,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:02,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:24:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-13 06:24:02,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606242534] [2020-10-13 06:24:02,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:02,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:02,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929367741] [2020-10-13 06:24:02,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:02,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:02,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:02,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:02,238 INFO L87 Difference]: Start difference. First operand 30213 states and 34991 transitions. Second operand 7 states. [2020-10-13 06:24:02,389 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:03,910 INFO L93 Difference]: Finished difference Result 54001 states and 62452 transitions. [2020-10-13 06:24:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:24:03,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-13 06:24:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:03,953 INFO L225 Difference]: With dead ends: 54001 [2020-10-13 06:24:03,953 INFO L226 Difference]: Without dead ends: 24259 [2020-10-13 06:24:03,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:24:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24259 states. [2020-10-13 06:24:04,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24259 to 24209. [2020-10-13 06:24:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24209 states. [2020-10-13 06:24:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24209 states to 24209 states and 27582 transitions. [2020-10-13 06:24:04,744 INFO L78 Accepts]: Start accepts. Automaton has 24209 states and 27582 transitions. Word has length 424 [2020-10-13 06:24:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:04,744 INFO L479 AbstractCegarLoop]: Abstraction has 24209 states and 27582 transitions. [2020-10-13 06:24:04,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 24209 states and 27582 transitions. [2020-10-13 06:24:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-13 06:24:04,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:04,781 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:04,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:24:04,781 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:04,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:04,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1880904645, now seen corresponding path program 1 times [2020-10-13 06:24:04,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:04,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293489871] [2020-10-13 06:24:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:09,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:09,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-13 06:24:09,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 06:24:09,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:24:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,121 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:24:10,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:24:10,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:24:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:24:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:24:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:24:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 06:24:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 283 proven. 66 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-13 06:24:10,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293489871] [2020-10-13 06:24:10,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:10,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:10,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627003107] [2020-10-13 06:24:10,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:10,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:10,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:10,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:10,740 INFO L87 Difference]: Start difference. First operand 24209 states and 27582 transitions. Second operand 7 states. [2020-10-13 06:24:11,098 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:11,785 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:14,597 INFO L93 Difference]: Finished difference Result 63022 states and 72749 transitions. [2020-10-13 06:24:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:14,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-13 06:24:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:14,685 INFO L225 Difference]: With dead ends: 63022 [2020-10-13 06:24:14,685 INFO L226 Difference]: Without dead ends: 39280 [2020-10-13 06:24:14,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39280 states. [2020-10-13 06:24:15,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39280 to 38838. [2020-10-13 06:24:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38838 states. [2020-10-13 06:24:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38838 states to 38838 states and 44204 transitions. [2020-10-13 06:24:15,695 INFO L78 Accepts]: Start accepts. Automaton has 38838 states and 44204 transitions. Word has length 436 [2020-10-13 06:24:15,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:15,696 INFO L479 AbstractCegarLoop]: Abstraction has 38838 states and 44204 transitions. [2020-10-13 06:24:15,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:15,696 INFO L276 IsEmpty]: Start isEmpty. Operand 38838 states and 44204 transitions. [2020-10-13 06:24:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-13 06:24:15,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:15,752 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:15,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:24:15,753 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash -884802361, now seen corresponding path program 1 times [2020-10-13 06:24:15,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:15,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271824987] [2020-10-13 06:24:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:20,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-13 06:24:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:24:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-13 06:24:20,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:24:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:24:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:24:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,129 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:21,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:21,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:21,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:24:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:21,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:21,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:24:21,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:24:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:24:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:24:21,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:24:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:24:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 06:24:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 429 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 06:24:21,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271824987] [2020-10-13 06:24:21,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:21,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:24:21,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644754801] [2020-10-13 06:24:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:24:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:24:21,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:24:21,984 INFO L87 Difference]: Start difference. First operand 38838 states and 44204 transitions. Second operand 8 states. [2020-10-13 06:24:22,649 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:23,004 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:24:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:26,152 INFO L93 Difference]: Finished difference Result 90076 states and 108784 transitions. [2020-10-13 06:24:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:24:26,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 466 [2020-10-13 06:24:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:27,598 INFO L225 Difference]: With dead ends: 90076 [2020-10-13 06:24:27,598 INFO L226 Difference]: Without dead ends: 51707 [2020-10-13 06:24:27,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:24:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51707 states. [2020-10-13 06:24:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51707 to 47835. [2020-10-13 06:24:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47835 states. [2020-10-13 06:24:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47835 states to 47835 states and 54449 transitions. [2020-10-13 06:24:28,639 INFO L78 Accepts]: Start accepts. Automaton has 47835 states and 54449 transitions. Word has length 466 [2020-10-13 06:24:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:28,639 INFO L479 AbstractCegarLoop]: Abstraction has 47835 states and 54449 transitions. [2020-10-13 06:24:28,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:24:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 47835 states and 54449 transitions. [2020-10-13 06:24:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-13 06:24:28,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:28,706 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:28,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:24:28,706 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2124789777, now seen corresponding path program 1 times [2020-10-13 06:24:28,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:28,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479116795] [2020-10-13 06:24:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:28,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 06:24:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:34,036 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:34,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:34,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:34,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:34,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:24:34,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 06:24:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-13 06:24:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:24:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:24:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:34,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:34,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:24:34,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:34,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:24:34,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:34,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 06:24:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 357 proven. 37 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 06:24:35,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479116795] [2020-10-13 06:24:35,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:35,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:35,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700222651] [2020-10-13 06:24:35,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:35,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:35,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:35,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:35,054 INFO L87 Difference]: Start difference. First operand 47835 states and 54449 transitions. Second operand 7 states. [2020-10-13 06:24:36,268 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:37,334 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:39,514 INFO L93 Difference]: Finished difference Result 114943 states and 142382 transitions. [2020-10-13 06:24:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:39,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-13 06:24:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:39,720 INFO L225 Difference]: With dead ends: 114943 [2020-10-13 06:24:39,720 INFO L226 Difference]: Without dead ends: 76888 [2020-10-13 06:24:39,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:24:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76888 states. [2020-10-13 06:24:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76888 to 74448. [2020-10-13 06:24:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74448 states. [2020-10-13 06:24:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74448 states to 74448 states and 84767 transitions. [2020-10-13 06:24:41,362 INFO L78 Accepts]: Start accepts. Automaton has 74448 states and 84767 transitions. Word has length 475 [2020-10-13 06:24:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:41,363 INFO L479 AbstractCegarLoop]: Abstraction has 74448 states and 84767 transitions. [2020-10-13 06:24:41,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 74448 states and 84767 transitions. [2020-10-13 06:24:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-13 06:24:41,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:41,438 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:41,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:24:41,438 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1970049648, now seen corresponding path program 1 times [2020-10-13 06:24:41,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:41,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219056396] [2020-10-13 06:24:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:46,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:46,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:24:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:46,802 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:46,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:46,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:46,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:24:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:46,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:46,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:24:46,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:46,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:47,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:47,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:24:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-13 06:24:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 06:24:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 06:24:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:47,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:24:47,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 06:24:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:24:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:24:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-13 06:24:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:47,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 06:24:47,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:24:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 06:24:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:47,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:47,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:24:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 06:24:47,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 06:24:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 430 proven. 101 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 06:24:48,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219056396] [2020-10-13 06:24:48,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:48,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 06:24:48,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881086164] [2020-10-13 06:24:48,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 06:24:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 06:24:48,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:24:48,048 INFO L87 Difference]: Start difference. First operand 74448 states and 84767 transitions. Second operand 10 states. [2020-10-13 06:24:48,209 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:48,839 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2020-10-13 06:24:50,028 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:50,484 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2020-10-13 06:24:55,449 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2020-10-13 06:24:56,042 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-13 06:24:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:56,418 INFO L93 Difference]: Finished difference Result 187659 states and 216408 transitions. [2020-10-13 06:24:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 06:24:56,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 481 [2020-10-13 06:24:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted.