/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/array-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:26:35,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:26:35,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:26:35,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:26:35,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:26:35,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:26:35,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:26:35,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:26:35,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:26:35,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:26:35,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:26:35,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:26:35,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:26:35,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:26:35,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:26:35,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:26:35,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:26:35,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:26:35,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:26:36,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:26:36,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:26:36,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:26:36,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:26:36,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:26:36,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:26:36,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:26:36,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:26:36,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:26:36,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:26:36,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:26:36,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:26:36,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:26:36,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:26:36,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:26:36,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:26:36,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:26:36,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:26:36,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:26:36,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:26:36,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:26:36,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:26:36,030 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 05:26:36,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:26:36,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:26:36,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:26:36,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:26:36,058 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:26:36,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:26:36,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:26:36,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:26:36,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:26:36,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:26:36,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:26:36,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:26:36,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:26:36,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:26:36,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:26:36,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:26:36,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:26:36,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:26:36,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:26:36,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:26:36,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:26:36,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:26:36,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:26:36,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:26:36,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:26:36,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:26:36,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:26:36,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:26:36,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:26:36,067 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 05:26:36,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:26:36,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:26:36,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:26:36,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:26:36,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:26:36,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-13 05:26:36,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b517af12/b4bae15914174148a1c5ee9b6f6d1673/FLAG26641665e [2020-10-13 05:26:36,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:26:36,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-13 05:26:36,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b517af12/b4bae15914174148a1c5ee9b6f6d1673/FLAG26641665e [2020-10-13 05:26:37,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b517af12/b4bae15914174148a1c5ee9b6f6d1673 [2020-10-13 05:26:37,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:26:37,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:26:37,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:26:37,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:26:37,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:26:37,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f30a912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37, skipping insertion in model container [2020-10-13 05:26:37,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:26:37,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:26:37,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:26:37,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:26:37,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:26:37,663 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:26:37,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37 WrapperNode [2020-10-13 05:26:37,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:26:37,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:26:37,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:26:37,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:26:37,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (1/1) ... [2020-10-13 05:26:37,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:26:37,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:26:37,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:26:37,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:26:37,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (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 05:26:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:26:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:26:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:26:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:26:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:26:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:26:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:26:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:26:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:26:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:26:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:26:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:26:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:26:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:26:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:26:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:26:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:26:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:26:38,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:26:38,180 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:26:38,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:26:38 BoogieIcfgContainer [2020-10-13 05:26:38,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:26:38,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:26:38,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:26:38,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:26:38,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:26:37" (1/3) ... [2020-10-13 05:26:38,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ac5796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:26:38, skipping insertion in model container [2020-10-13 05:26:38,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:37" (2/3) ... [2020-10-13 05:26:38,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ac5796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:26:38, skipping insertion in model container [2020-10-13 05:26:38,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:26:38" (3/3) ... [2020-10-13 05:26:38,209 INFO L109 eAbstractionObserver]: Analyzing ICFG rewrev.c [2020-10-13 05:26:38,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:26:38,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:26:38,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:26:38,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:26:38,255 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:26:38,255 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:26:38,255 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:26:38,256 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:26:38,256 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:26:38,256 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:26:38,256 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:26:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-13 05:26:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 05:26:38,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:38,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:38,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:38,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:38,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-13 05:26:38,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:38,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240110022] [2020-10-13 05:26:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:38,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:26:38,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 05:26:38,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 05:26:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:26:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:38,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:38,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 05:26:38,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:38,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:26:38,760 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 05:26:38,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240110022] [2020-10-13 05:26:38,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:26:38,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:26:38,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440827768] [2020-10-13 05:26:38,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:26:38,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:38,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:26:38,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:26:38,795 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-13 05:26:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:39,001 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-10-13 05:26:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:26:39,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 05:26:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:39,018 INFO L225 Difference]: With dead ends: 54 [2020-10-13 05:26:39,018 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 05:26:39,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:26:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 05:26:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-13 05:26:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 05:26:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-13 05:26:39,066 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-13 05:26:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:39,067 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-13 05:26:39,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:26:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-13 05:26:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 05:26:39,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:39,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:39,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:26:39,070 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:39,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-13 05:26:39,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:39,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311091765] [2020-10-13 05:26:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 05:26:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 05:26:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:26:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:26:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:26:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:39,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:39,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:39,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311091765] [2020-10-13 05:26:39,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:26:39,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:26:39,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711562624] [2020-10-13 05:26:39,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:26:39,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:26:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:26:39,389 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-13 05:26:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:39,498 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-13 05:26:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:26:39,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 05:26:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:39,500 INFO L225 Difference]: With dead ends: 38 [2020-10-13 05:26:39,501 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 05:26:39,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:26:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 05:26:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 05:26:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 05:26:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 05:26:39,518 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-10-13 05:26:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:39,519 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 05:26:39,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:26:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 05:26:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:26:39,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:39,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:39,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:26:39,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1844234969, now seen corresponding path program 1 times [2020-10-13 05:26:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:39,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702663905] [2020-10-13 05:26:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:40,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 05:26:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:26:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-13 05:26:40,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:26:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 05:26:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:41,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:41,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:41,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:41,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:26:41,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702663905] [2020-10-13 05:26:41,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:41,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:26:41,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142982551] [2020-10-13 05:26:41,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:26:41,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:41,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:26:41,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:26:41,023 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2020-10-13 05:26:41,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:41,427 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-13 05:26:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:26:41,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-13 05:26:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:41,430 INFO L225 Difference]: With dead ends: 39 [2020-10-13 05:26:41,430 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 05:26:41,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:26:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 05:26:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-13 05:26:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 05:26:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-13 05:26:41,441 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2020-10-13 05:26:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:41,442 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-13 05:26:41,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:26:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-13 05:26:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 05:26:41,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:41,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:41,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:26:41,445 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2097899152, now seen corresponding path program 1 times [2020-10-13 05:26:41,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:41,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124576268] [2020-10-13 05:26:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:43,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:43,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 05:26:43,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 05:26:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2249 [2020-10-13 05:26:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:26:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:26:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 05:26:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:43,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:26:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:44,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:44,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:44,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:44,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:26:44,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:26:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:44,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124576268] [2020-10-13 05:26:44,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:44,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:26:44,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873718902] [2020-10-13 05:26:44,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:26:44,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:44,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:26:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:26:44,081 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 17 states. [2020-10-13 05:26:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:45,402 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-10-13 05:26:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:26:45,403 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-10-13 05:26:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:45,406 INFO L225 Difference]: With dead ends: 49 [2020-10-13 05:26:45,406 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:26:45,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:26:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:26:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-13 05:26:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 05:26:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-13 05:26:45,428 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 30 [2020-10-13 05:26:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:45,429 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-13 05:26:45,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:26:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-13 05:26:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 05:26:45,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:45,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:45,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:26:45,432 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:45,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash -95790265, now seen corresponding path program 2 times [2020-10-13 05:26:45,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:45,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865400057] [2020-10-13 05:26:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 05:26:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-13 05:26:45,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:26:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 05:26:45,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:45,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:45,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:45,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:26:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:45,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:26:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:26:45,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:26:45,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865400057] [2020-10-13 05:26:45,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:45,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:26:45,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990627532] [2020-10-13 05:26:45,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:26:45,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:45,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:26:45,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:26:45,952 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2020-10-13 05:26:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:46,224 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-10-13 05:26:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:26:46,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-13 05:26:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:46,229 INFO L225 Difference]: With dead ends: 82 [2020-10-13 05:26:46,229 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:26:46,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:26:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:26:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-13 05:26:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 05:26:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-13 05:26:46,239 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2020-10-13 05:26:46,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:46,239 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-13 05:26:46,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:26:46,239 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-13 05:26:46,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 05:26:46,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:46,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:46,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:26:46,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:46,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:46,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1561203522, now seen corresponding path program 3 times [2020-10-13 05:26:46,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:46,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033021987] [2020-10-13 05:26:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:26:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 05:26:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2268 [2020-10-13 05:26:48,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:26:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:26:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 05:26:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:26:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:26:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:48,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:48,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:26:48,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:26:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:48,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:26:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:48,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:48,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:48,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:26:49,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033021987] [2020-10-13 05:26:49,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:49,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:26:49,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024824888] [2020-10-13 05:26:49,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:26:49,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:49,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:26:49,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:26:49,012 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 20 states. [2020-10-13 05:26:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:50,555 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-13 05:26:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:26:50,557 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-13 05:26:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:50,562 INFO L225 Difference]: With dead ends: 72 [2020-10-13 05:26:50,563 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 05:26:50,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=271, Invalid=1709, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 05:26:50,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 05:26:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-13 05:26:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 05:26:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-10-13 05:26:50,599 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 42 [2020-10-13 05:26:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:50,600 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-10-13 05:26:50,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:26:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-10-13 05:26:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 05:26:50,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:50,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:50,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:26:50,609 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -934761221, now seen corresponding path program 4 times [2020-10-13 05:26:50,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:50,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575410469] [2020-10-13 05:26:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:55,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:55,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:26:55,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 05:26:55,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:26:55,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:55,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:26:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 05:26:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:26:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:26:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:55,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:55,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:55,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:26:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:55,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:26:55,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:55,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:55,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:26:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:55,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 05:26:55,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575410469] [2020-10-13 05:26:55,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:26:55,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:26:55,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472918858] [2020-10-13 05:26:55,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:26:55,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:26:55,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:26:55,724 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 5 states. [2020-10-13 05:26:55,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:55,795 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-13 05:26:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:26:55,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 05:26:55,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:55,796 INFO L225 Difference]: With dead ends: 104 [2020-10-13 05:26:55,797 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 05:26:55,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:26:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 05:26:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-13 05:26:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 05:26:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-13 05:26:55,819 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2020-10-13 05:26:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:55,819 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-13 05:26:55,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:26:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-13 05:26:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 05:26:55,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:55,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:55,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:26:55,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:55,827 INFO L82 PathProgramCache]: Analyzing trace with hash -898222599, now seen corresponding path program 5 times [2020-10-13 05:26:55,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:55,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247319626] [2020-10-13 05:26:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:26:56,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-13 05:26:56,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:26:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:26:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:56,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:26:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:26:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:56,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:56,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:26:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:26:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:56,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:56,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 05:26:56,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247319626] [2020-10-13 05:26:56,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:56,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:26:56,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98524437] [2020-10-13 05:26:56,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:26:56,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:56,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:26:56,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:26:56,532 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 10 states. [2020-10-13 05:26:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:56,811 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2020-10-13 05:26:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:26:56,812 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-13 05:26:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:56,813 INFO L225 Difference]: With dead ends: 104 [2020-10-13 05:26:56,813 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 05:26:56,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:26:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 05:26:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-10-13 05:26:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 05:26:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-13 05:26:56,830 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2020-10-13 05:26:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:56,830 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-13 05:26:56,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:26:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-13 05:26:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:26:56,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:56,834 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:56,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:26:56,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:56,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1529426572, now seen corresponding path program 6 times [2020-10-13 05:26:56,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:56,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637456319] [2020-10-13 05:26:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 05:27:00,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:27:00,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3342 [2020-10-13 05:27:00,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:27:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 05:27:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:00,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:00,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:00,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:27:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:00,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:00,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:27:00,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:00,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:27:00,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 05:27:00,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637456319] [2020-10-13 05:27:00,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:00,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:27:00,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043992182] [2020-10-13 05:27:00,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:27:00,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:00,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:27:00,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:27:00,829 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 22 states. [2020-10-13 05:27:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:02,963 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-10-13 05:27:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 05:27:02,964 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-13 05:27:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:02,966 INFO L225 Difference]: With dead ends: 69 [2020-10-13 05:27:02,966 INFO L226 Difference]: Without dead ends: 67 [2020-10-13 05:27:02,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=276, Invalid=2076, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 05:27:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-13 05:27:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-13 05:27:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 05:27:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-10-13 05:27:02,977 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 54 [2020-10-13 05:27:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:02,978 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-10-13 05:27:02,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:27:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-10-13 05:27:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 05:27:02,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:02,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:02,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:27:02,980 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:02,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2017631787, now seen corresponding path program 7 times [2020-10-13 05:27:02,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:02,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377959280] [2020-10-13 05:27:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:03,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 05:27:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-13 05:27:03,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:27:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 05:27:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:27:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:03,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:03,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:03,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:03,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:03,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:03,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:03,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:03,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:27:03,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377959280] [2020-10-13 05:27:03,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:03,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:27:03,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435127921] [2020-10-13 05:27:03,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:27:03,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:03,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:27:03,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:27:03,824 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 10 states. [2020-10-13 05:27:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:04,081 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2020-10-13 05:27:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:27:04,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-13 05:27:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:04,083 INFO L225 Difference]: With dead ends: 118 [2020-10-13 05:27:04,084 INFO L226 Difference]: Without dead ends: 71 [2020-10-13 05:27:04,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:27:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-13 05:27:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-13 05:27:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 05:27:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-13 05:27:04,096 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2020-10-13 05:27:04,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:04,097 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-13 05:27:04,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:27:04,097 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-13 05:27:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 05:27:04,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:04,098 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:04,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:27:04,099 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1536371418, now seen corresponding path program 8 times [2020-10-13 05:27:04,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:04,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296617502] [2020-10-13 05:27:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:09,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:27:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 05:27:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:27:09,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 05:27:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 05:27:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:09,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:09,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:27:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:09,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:09,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:09,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:09,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:09,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:09,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:09,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:09,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:09,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 05:27:09,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296617502] [2020-10-13 05:27:09,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:09,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:27:09,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094070330] [2020-10-13 05:27:09,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:27:09,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:27:09,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:27:09,740 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 22 states. [2020-10-13 05:27:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:11,957 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-10-13 05:27:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 05:27:11,958 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 66 [2020-10-13 05:27:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:11,960 INFO L225 Difference]: With dead ends: 81 [2020-10-13 05:27:11,960 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 05:27:11,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=359, Invalid=2503, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 05:27:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 05:27:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-10-13 05:27:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 05:27:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-10-13 05:27:11,976 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 66 [2020-10-13 05:27:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:11,977 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-10-13 05:27:11,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:27:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-10-13 05:27:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 05:27:11,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:11,979 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:11,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:27:11,979 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:11,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2021053405, now seen corresponding path program 9 times [2020-10-13 05:27:11,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:11,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031668848] [2020-10-13 05:27:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 05:27:12,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-13 05:27:12,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:27:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 05:27:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:12,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:12,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:27:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:12,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:12,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:12,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:27:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:12,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 05:27:12,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031668848] [2020-10-13 05:27:12,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:12,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:27:12,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720067801] [2020-10-13 05:27:12,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:27:12,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:12,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:27:12,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:27:12,808 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 12 states. [2020-10-13 05:27:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:13,205 INFO L93 Difference]: Finished difference Result 144 states and 147 transitions. [2020-10-13 05:27:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 05:27:13,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-13 05:27:13,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:13,207 INFO L225 Difference]: With dead ends: 144 [2020-10-13 05:27:13,207 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 05:27:13,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:27:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 05:27:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-10-13 05:27:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 05:27:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-10-13 05:27:13,220 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2020-10-13 05:27:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:13,220 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-10-13 05:27:13,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:27:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-10-13 05:27:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 05:27:13,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:13,222 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:13,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:27:13,222 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash 863464024, now seen corresponding path program 10 times [2020-10-13 05:27:13,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:13,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320964831] [2020-10-13 05:27:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 05:27:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:27:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 05:27:18,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 05:27:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 05:27:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:18,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:18,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:18,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:18,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:18,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:27:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:18,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:18,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:18,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:27:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 37 proven. 101 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 05:27:18,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320964831] [2020-10-13 05:27:18,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:18,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:27:18,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407496829] [2020-10-13 05:27:18,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:27:18,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:18,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:27:18,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:27:18,996 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 22 states. [2020-10-13 05:27:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:21,911 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-10-13 05:27:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 05:27:21,912 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 78 [2020-10-13 05:27:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:21,913 INFO L225 Difference]: With dead ends: 93 [2020-10-13 05:27:21,913 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 05:27:21,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=405, Invalid=3017, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 05:27:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 05:27:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-13 05:27:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 05:27:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-10-13 05:27:21,931 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 78 [2020-10-13 05:27:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:21,932 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-10-13 05:27:21,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:27:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-10-13 05:27:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 05:27:21,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:21,933 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:21,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:27:21,934 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:21,934 INFO L82 PathProgramCache]: Analyzing trace with hash 662312719, now seen corresponding path program 11 times [2020-10-13 05:27:21,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:21,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214572324] [2020-10-13 05:27:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 05:27:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:22,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:22,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:22,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:27:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:22,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:27:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:22,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:22,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:27:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 05:27:22,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214572324] [2020-10-13 05:27:22,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:22,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:27:22,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016316105] [2020-10-13 05:27:22,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:27:22,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:22,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:27:22,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:27:22,583 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 12 states. [2020-10-13 05:27:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:22,975 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2020-10-13 05:27:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 05:27:22,976 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-10-13 05:27:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:22,978 INFO L225 Difference]: With dead ends: 158 [2020-10-13 05:27:22,978 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 05:27:22,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:27:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 05:27:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-10-13 05:27:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 05:27:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-13 05:27:22,999 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 86 [2020-10-13 05:27:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:23,000 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-13 05:27:23,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:27:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-13 05:27:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 05:27:23,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:23,001 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:23,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:27:23,001 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1052914422, now seen corresponding path program 12 times [2020-10-13 05:27:23,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:23,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501084616] [2020-10-13 05:27:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 05:27:28,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:27:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 05:27:28,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 05:27:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 05:27:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:28,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:28,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:28,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:27:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:27:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:28,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:28,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:27:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:28,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 30 proven. 160 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 05:27:28,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501084616] [2020-10-13 05:27:28,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:28,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:27:28,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621414784] [2020-10-13 05:27:28,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:27:28,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:28,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:27:28,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:27:28,968 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2020-10-13 05:27:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:32,421 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-10-13 05:27:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 05:27:32,422 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 90 [2020-10-13 05:27:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:32,424 INFO L225 Difference]: With dead ends: 105 [2020-10-13 05:27:32,424 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 05:27:32,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=459, Invalid=4097, Unknown=0, NotChecked=0, Total=4556 [2020-10-13 05:27:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 05:27:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-13 05:27:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 05:27:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-10-13 05:27:32,438 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 90 [2020-10-13 05:27:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:32,439 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-10-13 05:27:32,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:27:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-10-13 05:27:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 05:27:32,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:32,440 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:32,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:27:32,441 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash -648828991, now seen corresponding path program 13 times [2020-10-13 05:27:32,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:32,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140060645] [2020-10-13 05:27:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:32,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 05:27:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-13 05:27:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:27:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 05:27:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:33,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:33,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:27:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:27:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:27:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:27:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:33,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:33,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 05:27:33,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140060645] [2020-10-13 05:27:33,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:33,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:27:33,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179178861] [2020-10-13 05:27:33,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:27:33,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:33,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:27:33,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:27:33,585 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 13 states. [2020-10-13 05:27:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:34,223 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions. [2020-10-13 05:27:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:27:34,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-13 05:27:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:34,226 INFO L225 Difference]: With dead ends: 178 [2020-10-13 05:27:34,226 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 05:27:34,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:27:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 05:27:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-13 05:27:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 05:27:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2020-10-13 05:27:34,257 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 98 [2020-10-13 05:27:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:34,257 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2020-10-13 05:27:34,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:27:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2020-10-13 05:27:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 05:27:34,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:34,264 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:34,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:27:34,265 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:34,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1688681788, now seen corresponding path program 14 times [2020-10-13 05:27:34,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:34,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075604311] [2020-10-13 05:27:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:39,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:39,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 05:27:39,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:27:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:27:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 05:27:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 05:27:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:40,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:40,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:40,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:27:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:27:40,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:27:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:40,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:27:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:27:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:40,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 41 proven. 209 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 05:27:40,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075604311] [2020-10-13 05:27:40,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:40,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:27:40,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420736452] [2020-10-13 05:27:40,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:27:40,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:40,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:27:40,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:27:40,743 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 28 states. [2020-10-13 05:27:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:45,687 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-10-13 05:27:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 05:27:45,688 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-10-13 05:27:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:45,690 INFO L225 Difference]: With dead ends: 117 [2020-10-13 05:27:45,690 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 05:27:45,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 24 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=584, Invalid=4966, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 05:27:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 05:27:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-13 05:27:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 05:27:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2020-10-13 05:27:45,706 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 102 [2020-10-13 05:27:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:45,706 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2020-10-13 05:27:45,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:27:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2020-10-13 05:27:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 05:27:45,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:45,709 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:45,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:27:45,709 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash -374684173, now seen corresponding path program 15 times [2020-10-13 05:27:45,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:45,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093053420] [2020-10-13 05:27:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:46,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:46,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 05:27:46,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-13 05:27:46,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:27:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 05:27:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:46,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:46,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:46,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:46,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:46,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:46,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:46,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:46,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:46,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:46,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:46,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:46,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:46,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:27:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:47,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:47,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:27:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:47,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:47,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:47,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:27:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:47,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:47,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:47,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:47,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:47,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:27:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:47,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:27:47,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:27:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:47,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:47,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:47,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:27:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:27:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:47,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:47,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:47,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 05:27:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093053420] [2020-10-13 05:27:47,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:47,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:27:47,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677257269] [2020-10-13 05:27:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:27:47,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:27:47,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:27:47,133 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 15 states. [2020-10-13 05:27:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:47,822 INFO L93 Difference]: Finished difference Result 204 states and 207 transitions. [2020-10-13 05:27:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 05:27:47,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-13 05:27:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:47,825 INFO L225 Difference]: With dead ends: 204 [2020-10-13 05:27:47,825 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 05:27:47,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:27:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 05:27:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-10-13 05:27:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 05:27:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2020-10-13 05:27:47,838 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 110 [2020-10-13 05:27:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:47,838 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2020-10-13 05:27:47,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:27:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2020-10-13 05:27:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:27:47,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:47,840 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:47,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:27:47,840 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -331678994, now seen corresponding path program 16 times [2020-10-13 05:27:47,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:47,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768991208] [2020-10-13 05:27:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:48,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:52,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:52,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 05:27:52,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 05:27:52,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:27:52,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-13 05:27:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 05:27:52,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:27:54,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 05:27:54,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:27:54,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:54,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:54,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:54,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:27:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:27:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:54,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:27:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:54,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:27:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:27:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:54,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:27:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 40 proven. 278 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 05:27:54,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768991208] [2020-10-13 05:27:54,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:54,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 05:27:54,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668915842] [2020-10-13 05:27:54,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 05:27:54,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:54,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 05:27:54,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2020-10-13 05:27:54,618 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 32 states. [2020-10-13 05:28:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:00,073 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-10-13 05:28:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 05:28:00,074 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 114 [2020-10-13 05:28:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:00,075 INFO L225 Difference]: With dead ends: 129 [2020-10-13 05:28:00,076 INFO L226 Difference]: Without dead ends: 127 [2020-10-13 05:28:00,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 27 SyntacticMatches, 13 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=777, Invalid=6195, Unknown=0, NotChecked=0, Total=6972 [2020-10-13 05:28:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-13 05:28:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-13 05:28:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 05:28:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2020-10-13 05:28:00,094 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 114 [2020-10-13 05:28:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:00,095 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2020-10-13 05:28:00,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 05:28:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2020-10-13 05:28:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 05:28:00,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:00,097 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:00,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:28:00,097 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:00,098 INFO L82 PathProgramCache]: Analyzing trace with hash -876170843, now seen corresponding path program 17 times [2020-10-13 05:28:00,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:00,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882315312] [2020-10-13 05:28:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 05:28:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:28:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:28:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:28:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:28:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:28:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:01,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:28:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:28:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:28:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 05:28:01,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882315312] [2020-10-13 05:28:01,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:01,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:28:01,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573454372] [2020-10-13 05:28:01,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:28:01,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:01,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:28:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:28:01,365 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 16 states. [2020-10-13 05:28:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:02,078 INFO L93 Difference]: Finished difference Result 224 states and 227 transitions. [2020-10-13 05:28:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:28:02,079 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 122 [2020-10-13 05:28:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:02,081 INFO L225 Difference]: With dead ends: 224 [2020-10-13 05:28:02,081 INFO L226 Difference]: Without dead ends: 137 [2020-10-13 05:28:02,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:28:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-13 05:28:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2020-10-13 05:28:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 05:28:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2020-10-13 05:28:02,102 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 122 [2020-10-13 05:28:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:02,103 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2020-10-13 05:28:02,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:28:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2020-10-13 05:28:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 05:28:02,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:02,105 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:02,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:28:02,105 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:02,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:02,105 INFO L82 PathProgramCache]: Analyzing trace with hash -299874784, now seen corresponding path program 18 times [2020-10-13 05:28:02,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:02,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392976658] [2020-10-13 05:28:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 05:28:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 05:28:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:28:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-13 05:28:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:28:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 05:28:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:08,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:08,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:28:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:28:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:08,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:28:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:08,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:28:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:08,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:28:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:28:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:28:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:08,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:28:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:08,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:28:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 45 proven. 349 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 05:28:08,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392976658] [2020-10-13 05:28:08,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:08,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 05:28:08,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395304211] [2020-10-13 05:28:08,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 05:28:08,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 05:28:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=990, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:28:08,845 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 33 states. [2020-10-13 05:28:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:15,322 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-10-13 05:28:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-13 05:28:15,323 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2020-10-13 05:28:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:15,325 INFO L225 Difference]: With dead ends: 141 [2020-10-13 05:28:15,325 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 05:28:15,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 29 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=759, Invalid=7073, Unknown=0, NotChecked=0, Total=7832 [2020-10-13 05:28:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 05:28:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-13 05:28:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 05:28:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2020-10-13 05:28:15,347 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 126 [2020-10-13 05:28:15,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:15,348 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2020-10-13 05:28:15,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 05:28:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2020-10-13 05:28:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 05:28:15,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:15,350 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:15,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:28:15,350 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 445557463, now seen corresponding path program 19 times [2020-10-13 05:28:15,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:15,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782092582] [2020-10-13 05:28:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 05:28:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-13 05:28:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:28:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 05:28:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:28:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:28:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:28:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:28:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:28:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:28:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:28:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:28:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:28:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 05:28:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 220 proven. 190 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 05:28:17,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782092582] [2020-10-13 05:28:17,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:17,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:28:17,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4531415] [2020-10-13 05:28:17,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:28:17,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:17,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:28:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:28:17,182 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 17 states. [2020-10-13 05:28:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:18,027 INFO L93 Difference]: Finished difference Result 244 states and 247 transitions. [2020-10-13 05:28:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:28:18,030 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2020-10-13 05:28:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:18,032 INFO L225 Difference]: With dead ends: 244 [2020-10-13 05:28:18,032 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 05:28:18,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:28:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 05:28:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2020-10-13 05:28:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-13 05:28:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-10-13 05:28:18,046 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 134 [2020-10-13 05:28:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:18,046 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-10-13 05:28:18,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:28:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-10-13 05:28:18,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 05:28:18,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:18,048 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:18,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:28:18,049 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:18,049 INFO L82 PathProgramCache]: Analyzing trace with hash -669098286, now seen corresponding path program 20 times [2020-10-13 05:28:18,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:18,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112032923] [2020-10-13 05:28:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 05:28:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:28:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:28:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:28:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:24,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:28:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:28:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:28:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:28:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:28:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:28:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 59 proven. 419 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 05:28:24,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112032923] [2020-10-13 05:28:24,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:24,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 05:28:24,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980329524] [2020-10-13 05:28:24,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 05:28:24,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:24,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 05:28:24,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=928, Unknown=0, NotChecked=0, Total=992 [2020-10-13 05:28:24,820 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 32 states. [2020-10-13 05:28:29,077 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-13 05:28:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:32,030 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2020-10-13 05:28:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-13 05:28:32,031 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 138 [2020-10-13 05:28:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:32,033 INFO L225 Difference]: With dead ends: 151 [2020-10-13 05:28:32,034 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 05:28:32,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 34 SyntacticMatches, 20 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=967, Invalid=7589, Unknown=0, NotChecked=0, Total=8556 [2020-10-13 05:28:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 05:28:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2020-10-13 05:28:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 05:28:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-10-13 05:28:32,052 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 138 [2020-10-13 05:28:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:32,053 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-10-13 05:28:32,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 05:28:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-10-13 05:28:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 05:28:32,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:32,055 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:32,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 05:28:32,055 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:32,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:32,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1467354743, now seen corresponding path program 21 times [2020-10-13 05:28:32,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:32,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501873138] [2020-10-13 05:28:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 05:28:34,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-13 05:28:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:28:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 05:28:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:28:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:28:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:28:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:28:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:28:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:28:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:28:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:34,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:28:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:28:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 05:28:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 264 proven. 231 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 05:28:34,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501873138] [2020-10-13 05:28:34,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:34,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:28:34,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820584289] [2020-10-13 05:28:34,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:28:34,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:34,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:28:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:28:34,400 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 17 states. [2020-10-13 05:28:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:35,296 INFO L93 Difference]: Finished difference Result 256 states and 259 transitions. [2020-10-13 05:28:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:28:35,297 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 146 [2020-10-13 05:28:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:35,300 INFO L225 Difference]: With dead ends: 256 [2020-10-13 05:28:35,301 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 05:28:35,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:28:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 05:28:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2020-10-13 05:28:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-13 05:28:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2020-10-13 05:28:35,331 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 146 [2020-10-13 05:28:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:35,331 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2020-10-13 05:28:35,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:28:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2020-10-13 05:28:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 05:28:35,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:35,335 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:35,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 05:28:35,339 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash -6519548, now seen corresponding path program 22 times [2020-10-13 05:28:35,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:35,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323699297] [2020-10-13 05:28:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:28:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-13 05:28:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:42,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:42,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:42,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:28:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:28:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:28:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:28:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:28:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:28:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:42,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:28:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:28:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 05:28:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 05:28:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 05:28:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 61 proven. 509 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-13 05:28:42,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323699297] [2020-10-13 05:28:42,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:42,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 05:28:42,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170281091] [2020-10-13 05:28:42,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 05:28:42,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:42,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 05:28:42,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1120, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:28:42,312 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 35 states. [2020-10-13 05:28:47,257 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 05:28:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:51,089 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions. [2020-10-13 05:28:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-13 05:28:51,089 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 150 [2020-10-13 05:28:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:51,091 INFO L225 Difference]: With dead ends: 161 [2020-10-13 05:28:51,092 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 05:28:51,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 20 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1103, Invalid=8997, Unknown=0, NotChecked=0, Total=10100 [2020-10-13 05:28:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 05:28:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2020-10-13 05:28:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 05:28:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2020-10-13 05:28:51,109 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 150 [2020-10-13 05:28:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:51,109 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2020-10-13 05:28:51,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 05:28:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2020-10-13 05:28:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 05:28:51,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:51,111 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:51,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 05:28:51,111 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1881160261, now seen corresponding path program 23 times [2020-10-13 05:28:51,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:51,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369710194] [2020-10-13 05:28:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 05:28:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:53,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:28:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:28:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:28:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:28:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:28:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:28:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:28:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:28:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 05:28:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 05:28:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 05:28:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 05:28:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:53,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:53,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:53,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 312 proven. 276 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 05:28:53,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369710194] [2020-10-13 05:28:53,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:28:53,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173696532] [2020-10-13 05:28:53,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:28:53,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:53,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:28:53,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:28:53,458 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand 18 states. [2020-10-13 05:28:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:54,433 INFO L93 Difference]: Finished difference Result 268 states and 273 transitions. [2020-10-13 05:28:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 05:28:54,434 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-13 05:28:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:54,437 INFO L225 Difference]: With dead ends: 268 [2020-10-13 05:28:54,437 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 05:28:54,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:28:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 05:28:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-13 05:28:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 05:28:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2020-10-13 05:28:54,453 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 158 [2020-10-13 05:28:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:54,454 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2020-10-13 05:28:54,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:28:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2020-10-13 05:28:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 05:28:54,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:54,455 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:54,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 05:28:54,455 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1314785098, now seen corresponding path program 24 times [2020-10-13 05:28:54,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:54,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685193230] [2020-10-13 05:28:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 05:28:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:01,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:29:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:29:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:29:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:29:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:29:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:29:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:29:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:29:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:29:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:29:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:01,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 05:29:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 05:29:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 05:29:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 63 proven. 607 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-13 05:29:01,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685193230] [2020-10-13 05:29:01,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:01,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 05:29:01,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383676731] [2020-10-13 05:29:01,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 05:29:01,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:01,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 05:29:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1405, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:29:01,882 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand 39 states. [2020-10-13 05:29:06,804 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-13 05:29:07,150 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-13 05:29:07,663 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-13 05:29:07,955 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-13 05:29:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:14,393 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2020-10-13 05:29:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-13 05:29:14,395 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 162 [2020-10-13 05:29:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:14,397 INFO L225 Difference]: With dead ends: 169 [2020-10-13 05:29:14,397 INFO L226 Difference]: Without dead ends: 167 [2020-10-13 05:29:14,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 38 SyntacticMatches, 21 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1200, Invalid=10790, Unknown=0, NotChecked=0, Total=11990 [2020-10-13 05:29:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-13 05:29:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2020-10-13 05:29:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 05:29:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2020-10-13 05:29:14,413 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 162 [2020-10-13 05:29:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:14,414 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2020-10-13 05:29:14,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 05:29:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2020-10-13 05:29:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 05:29:14,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:14,415 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:14,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 05:29:14,416 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1113024365, now seen corresponding path program 25 times [2020-10-13 05:29:14,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:14,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436476030] [2020-10-13 05:29:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 05:29:16,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:29:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2472 [2020-10-13 05:29:16,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 05:29:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:29:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-13 05:29:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:29:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:17,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:29:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:29:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:29:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:29:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:29:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:29:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:29:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:29:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 05:29:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 05:29:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 05:29:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 05:29:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 364 proven. 325 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 05:29:17,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436476030] [2020-10-13 05:29:17,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:17,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:29:17,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070508539] [2020-10-13 05:29:17,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:29:17,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:17,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:29:17,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:29:17,264 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand 20 states. [2020-10-13 05:29:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:18,398 INFO L93 Difference]: Finished difference Result 286 states and 294 transitions. [2020-10-13 05:29:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 05:29:18,399 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 170 [2020-10-13 05:29:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:18,401 INFO L225 Difference]: With dead ends: 286 [2020-10-13 05:29:18,401 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 05:29:18,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 05:29:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 05:29:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2020-10-13 05:29:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-13 05:29:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2020-10-13 05:29:18,419 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 170 [2020-10-13 05:29:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:18,420 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2020-10-13 05:29:18,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:29:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2020-10-13 05:29:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 05:29:18,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:18,421 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:18,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 05:29:18,421 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:18,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:18,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1121319400, now seen corresponding path program 26 times [2020-10-13 05:29:18,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:18,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276192322] [2020-10-13 05:29:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:29:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-13 05:29:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:25,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:25,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:25,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:29:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:29:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:29:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:29:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:29:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:29:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:29:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 05:29:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:26,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 05:29:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:26,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 05:29:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:26,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 05:29:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:26,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 05:29:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:26,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-13 05:29:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:26,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:26,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 65 proven. 713 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-13 05:29:26,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276192322] [2020-10-13 05:29:26,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:26,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-13 05:29:26,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229861627] [2020-10-13 05:29:26,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-13 05:29:26,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-13 05:29:26,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1481, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 05:29:26,187 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand 40 states. [2020-10-13 05:29:32,209 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-13 05:29:32,515 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-13 05:29:33,025 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-13 05:29:33,452 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-13 05:29:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:39,111 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2020-10-13 05:29:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-13 05:29:39,113 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 174 [2020-10-13 05:29:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:39,115 INFO L225 Difference]: With dead ends: 177 [2020-10-13 05:29:39,116 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 05:29:39,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 41 SyntacticMatches, 24 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1273, Invalid=11837, Unknown=0, NotChecked=0, Total=13110 [2020-10-13 05:29:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 05:29:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-10-13 05:29:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-13 05:29:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 176 transitions. [2020-10-13 05:29:39,136 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 176 transitions. Word has length 174 [2020-10-13 05:29:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:39,136 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 176 transitions. [2020-10-13 05:29:39,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-13 05:29:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 176 transitions. [2020-10-13 05:29:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 05:29:39,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:39,138 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:39,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 05:29:39,138 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1722280289, now seen corresponding path program 27 times [2020-10-13 05:29:39,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146310820] [2020-10-13 05:29:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 05:29:42,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:29:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3411 [2020-10-13 05:29:42,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 05:29:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:29:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-13 05:29:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:29:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:29:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:29:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:29:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:29:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:29:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:29:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 05:29:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 05:29:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 05:29:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 05:29:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 05:29:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-13 05:29:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 05:29:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 420 proven. 378 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 05:29:43,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146310820] [2020-10-13 05:29:43,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:43,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:29:43,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847491990] [2020-10-13 05:29:43,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:29:43,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:29:43,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:29:43,007 INFO L87 Difference]: Start difference. First operand 171 states and 176 transitions. Second operand 20 states. [2020-10-13 05:29:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:44,494 INFO L93 Difference]: Finished difference Result 292 states and 301 transitions. [2020-10-13 05:29:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 05:29:44,496 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 182 [2020-10-13 05:29:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:44,498 INFO L225 Difference]: With dead ends: 292 [2020-10-13 05:29:44,498 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 05:29:44,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 05:29:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 05:29:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2020-10-13 05:29:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 05:29:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 180 transitions. [2020-10-13 05:29:44,518 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 180 transitions. Word has length 182 [2020-10-13 05:29:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:44,518 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 180 transitions. [2020-10-13 05:29:44,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:29:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 180 transitions. [2020-10-13 05:29:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 05:29:44,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:44,520 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:44,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 05:29:44,520 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 528468122, now seen corresponding path program 28 times [2020-10-13 05:29:44,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:44,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474497178] [2020-10-13 05:29:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-13 05:29:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:52,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:29:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:29:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:29:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:29:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:29:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:29:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:52,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:29:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:29:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 05:29:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 05:29:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 05:29:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 05:29:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 05:29:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 05:29:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 85 proven. 809 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-13 05:29:52,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474497178] [2020-10-13 05:29:52,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:52,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 05:29:52,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316269039] [2020-10-13 05:29:52,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 05:29:52,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:52,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 05:29:52,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1403, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:29:52,797 INFO L87 Difference]: Start difference. First operand 175 states and 180 transitions. Second operand 39 states. [2020-10-13 05:29:57,965 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-13 05:29:58,707 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 05:29:59,483 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-13 05:30:00,318 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-13 05:30:00,995 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-13 05:30:01,530 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-13 05:30:01,803 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 05:30:02,245 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-13 05:30:02,673 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-13 05:30:02,985 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-13 05:30:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:10,625 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2020-10-13 05:30:10,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-13 05:30:10,627 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 186 [2020-10-13 05:30:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:10,628 INFO L225 Difference]: With dead ends: 187 [2020-10-13 05:30:10,629 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 05:30:10,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 46 SyntacticMatches, 29 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2731 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1571, Invalid=12949, Unknown=0, NotChecked=0, Total=14520 [2020-10-13 05:30:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 05:30:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2020-10-13 05:30:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 05:30:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 188 transitions. [2020-10-13 05:30:10,651 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 188 transitions. Word has length 186 [2020-10-13 05:30:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:10,651 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 188 transitions. [2020-10-13 05:30:10,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 05:30:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 188 transitions. [2020-10-13 05:30:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 05:30:10,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:10,653 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:10,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 05:30:10,653 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:10,654 INFO L82 PathProgramCache]: Analyzing trace with hash -437709999, now seen corresponding path program 29 times [2020-10-13 05:30:10,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:10,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668318795] [2020-10-13 05:30:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2986 [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 05:30:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:30:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:30:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:30:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:30:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:30:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:30:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:30:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:30:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:30:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 05:30:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 05:30:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 05:30:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 05:30:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 05:30:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 05:30:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 05:30:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:14,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:14,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 480 proven. 435 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-13 05:30:14,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668318795] [2020-10-13 05:30:14,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:14,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:30:14,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084984283] [2020-10-13 05:30:14,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:30:14,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:14,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:30:14,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:30:14,120 INFO L87 Difference]: Start difference. First operand 183 states and 188 transitions. Second operand 21 states. [2020-10-13 05:30:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:15,759 INFO L93 Difference]: Finished difference Result 312 states and 321 transitions. [2020-10-13 05:30:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 05:30:15,760 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 194 [2020-10-13 05:30:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:15,763 INFO L225 Difference]: With dead ends: 312 [2020-10-13 05:30:15,763 INFO L226 Difference]: Without dead ends: 189 [2020-10-13 05:30:15,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:30:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-13 05:30:15,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2020-10-13 05:30:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-13 05:30:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2020-10-13 05:30:15,784 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 194 [2020-10-13 05:30:15,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:15,784 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 192 transitions. [2020-10-13 05:30:15,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:30:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 192 transitions. [2020-10-13 05:30:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-13 05:30:15,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:15,786 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:15,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 05:30:15,786 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:15,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:15,787 INFO L82 PathProgramCache]: Analyzing trace with hash -611932980, now seen corresponding path program 30 times [2020-10-13 05:30:15,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:15,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668255341] [2020-10-13 05:30:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking...