/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:18:16,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:18:16,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:18:16,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:18:16,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:18:16,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:18:16,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:18:16,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:18:16,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:18:16,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:18:16,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:18:16,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:18:16,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:18:16,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:18:16,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:18:16,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:18:16,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:18:16,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:18:16,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:18:16,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:18:16,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:18:16,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:18:16,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:18:16,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:18:17,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:18:17,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:18:17,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:18:17,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:18:17,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:18:17,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:18:17,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:18:17,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:18:17,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:18:17,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:18:17,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:18:17,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:18:17,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:18:17,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:18:17,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:18:17,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:18:17,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:18:17,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:18:17,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:18:17,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:18:17,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:18:17,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:18:17,068 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:18:17,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:18:17,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:18:17,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:18:17,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:18:17,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:18:17,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:18:17,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:18:17,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:18:17,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:18:17,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:18:17,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:18:17,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:18:17,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:18:17,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:18:17,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:18:17,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:18:17,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:18:17,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:18:17,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:18:17,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:18:17,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:18:17,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:18:17,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:18:17,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:18:17,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:18:17,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:18:17,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:18:17,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:18:17,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:18:17,437 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:18:17,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:18:17,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d26871ca/9a8dfb07c2dd456487c8b1e98f9d9fa1/FLAG3fc13e095 [2020-10-13 14:18:18,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:18:18,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:18:18,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d26871ca/9a8dfb07c2dd456487c8b1e98f9d9fa1/FLAG3fc13e095 [2020-10-13 14:18:18,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d26871ca/9a8dfb07c2dd456487c8b1e98f9d9fa1 [2020-10-13 14:18:18,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:18:18,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:18:18,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:18:18,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:18:18,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:18:18,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:18:18" (1/1) ... [2020-10-13 14:18:18,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:18, skipping insertion in model container [2020-10-13 14:18:18,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:18:18" (1/1) ... [2020-10-13 14:18:18,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:18:18,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:18:18,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:18:19,010 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:18:19,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:18:19,209 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:18:19,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19 WrapperNode [2020-10-13 14:18:19,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:18:19,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:18:19,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:18:19,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:18:19,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... [2020-10-13 14:18:19,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:18:19,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:18:19,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:18:19,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:18:19,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:18:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:18:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:18:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:18:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:18:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:18:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:18:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:18:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:18:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:18:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:18:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:18:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:18:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:18:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:18:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:18:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:18:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:18:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:18:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:18:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:18:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:18:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:18:20,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:18:20,749 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:18:20,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:18:20 BoogieIcfgContainer [2020-10-13 14:18:20,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:18:20,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:18:20,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:18:20,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:18:20,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:18:18" (1/3) ... [2020-10-13 14:18:20,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df33731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:18:20, skipping insertion in model container [2020-10-13 14:18:20,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:19" (2/3) ... [2020-10-13 14:18:20,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df33731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:18:20, skipping insertion in model container [2020-10-13 14:18:20,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:18:20" (3/3) ... [2020-10-13 14:18:20,776 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:18:20,789 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:18:20,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:18:20,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:18:20,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:18:20,858 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:18:20,858 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:18:20,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:18:20,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:18:20,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:18:20,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:18:20,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:18:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-10-13 14:18:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:18:20,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:20,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:20,934 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1911810367, now seen corresponding path program 1 times [2020-10-13 14:18:20,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:20,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271641894] [2020-10-13 14:18:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:26,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:18:26,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:18:26,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:18:26,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:18:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 14:18:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:18:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:18:26,627 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:18:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:26,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:26,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:26,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:18:26,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:26,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:18:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:18:26,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271641894] [2020-10-13 14:18:26,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:26,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:18:26,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867189404] [2020-10-13 14:18:26,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:18:26,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:26,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:18:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:18:26,762 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 5 states. [2020-10-13 14:18:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:28,601 INFO L93 Difference]: Finished difference Result 639 states and 1040 transitions. [2020-10-13 14:18:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:18:28,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 14:18:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:28,633 INFO L225 Difference]: With dead ends: 639 [2020-10-13 14:18:28,634 INFO L226 Difference]: Without dead ends: 332 [2020-10-13 14:18:28,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:18:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-13 14:18:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2020-10-13 14:18:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-13 14:18:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 507 transitions. [2020-10-13 14:18:28,744 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 507 transitions. Word has length 131 [2020-10-13 14:18:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:28,744 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 507 transitions. [2020-10-13 14:18:28,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:18:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 507 transitions. [2020-10-13 14:18:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 14:18:28,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:28,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:28,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:18:28,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:28,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1124010976, now seen corresponding path program 1 times [2020-10-13 14:18:28,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:28,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358283866] [2020-10-13 14:18:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:33,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:33,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 14:18:33,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:18:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:18:33,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:18:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 14:18:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:18:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:18:34,228 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:18:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:34,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:18:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:18:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:18:34,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358283866] [2020-10-13 14:18:34,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:34,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:18:34,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654521772] [2020-10-13 14:18:34,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:18:34,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:34,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:18:34,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:18:34,318 INFO L87 Difference]: Start difference. First operand 332 states and 507 transitions. Second operand 5 states. [2020-10-13 14:18:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:35,542 INFO L93 Difference]: Finished difference Result 569 states and 884 transitions. [2020-10-13 14:18:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:18:35,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 14:18:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:35,547 INFO L225 Difference]: With dead ends: 569 [2020-10-13 14:18:35,547 INFO L226 Difference]: Without dead ends: 332 [2020-10-13 14:18:35,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:18:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-13 14:18:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2020-10-13 14:18:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-13 14:18:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 504 transitions. [2020-10-13 14:18:35,578 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 504 transitions. Word has length 161 [2020-10-13 14:18:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:35,580 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 504 transitions. [2020-10-13 14:18:35,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:18:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 504 transitions. [2020-10-13 14:18:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 14:18:35,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:35,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:35,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:18:35,583 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1870260155, now seen corresponding path program 1 times [2020-10-13 14:18:35,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:35,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733123905] [2020-10-13 14:18:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:40,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:40,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 14:18:40,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:18:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:18:40,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:18:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 14:18:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:18:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:18:40,815 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:18:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:40,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:40,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:18:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:18:40,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733123905] [2020-10-13 14:18:40,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:40,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:18:40,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866752200] [2020-10-13 14:18:40,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:18:40,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:40,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:18:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:18:40,864 INFO L87 Difference]: Start difference. First operand 332 states and 504 transitions. Second operand 4 states. [2020-10-13 14:18:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:43,044 INFO L93 Difference]: Finished difference Result 783 states and 1216 transitions. [2020-10-13 14:18:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:18:43,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-13 14:18:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:43,050 INFO L225 Difference]: With dead ends: 783 [2020-10-13 14:18:43,050 INFO L226 Difference]: Without dead ends: 546 [2020-10-13 14:18:43,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:18:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-13 14:18:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2020-10-13 14:18:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-13 14:18:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 829 transitions. [2020-10-13 14:18:43,073 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 829 transitions. Word has length 163 [2020-10-13 14:18:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:43,073 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 829 transitions. [2020-10-13 14:18:43,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:18:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 829 transitions. [2020-10-13 14:18:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 14:18:43,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:43,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:43,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:18:43,077 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:43,077 INFO L82 PathProgramCache]: Analyzing trace with hash 844366848, now seen corresponding path program 1 times [2020-10-13 14:18:43,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:43,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536458666] [2020-10-13 14:18:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:48,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:48,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 14:18:48,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:18:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:18:48,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:18:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:18:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:18:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:18:48,367 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:18:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:48,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:48,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:48,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:18:48,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:18:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:18:48,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536458666] [2020-10-13 14:18:48,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:48,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:18:48,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748835090] [2020-10-13 14:18:48,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:18:48,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:18:48,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:18:48,469 INFO L87 Difference]: Start difference. First operand 544 states and 829 transitions. Second operand 4 states. [2020-10-13 14:18:48,730 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 14:18:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:50,158 INFO L93 Difference]: Finished difference Result 1413 states and 2185 transitions. [2020-10-13 14:18:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:18:50,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-13 14:18:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:50,167 INFO L225 Difference]: With dead ends: 1413 [2020-10-13 14:18:50,167 INFO L226 Difference]: Without dead ends: 997 [2020-10-13 14:18:50,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:18:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-10-13 14:18:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 963. [2020-10-13 14:18:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-13 14:18:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1474 transitions. [2020-10-13 14:18:50,218 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1474 transitions. Word has length 164 [2020-10-13 14:18:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:50,219 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1474 transitions. [2020-10-13 14:18:50,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:18:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1474 transitions. [2020-10-13 14:18:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 14:18:50,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:50,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:50,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:18:50,224 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1317077716, now seen corresponding path program 1 times [2020-10-13 14:18:50,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:50,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952950485] [2020-10-13 14:18:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:55,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:18:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:55,458 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:18:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:55,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:55,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:18:55,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:18:55,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952950485] [2020-10-13 14:18:55,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:55,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:18:55,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838171889] [2020-10-13 14:18:55,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:18:55,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:55,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:18:55,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:18:55,517 INFO L87 Difference]: Start difference. First operand 963 states and 1474 transitions. Second operand 4 states. [2020-10-13 14:18:55,706 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 14:18:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:57,496 INFO L93 Difference]: Finished difference Result 2253 states and 3472 transitions. [2020-10-13 14:18:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:18:57,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-13 14:18:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:57,507 INFO L225 Difference]: With dead ends: 2253 [2020-10-13 14:18:57,507 INFO L226 Difference]: Without dead ends: 1533 [2020-10-13 14:18:57,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:18:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2020-10-13 14:18:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1467. [2020-10-13 14:18:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-13 14:18:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2236 transitions. [2020-10-13 14:18:57,581 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2236 transitions. Word has length 166 [2020-10-13 14:18:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:57,582 INFO L479 AbstractCegarLoop]: Abstraction has 1467 states and 2236 transitions. [2020-10-13 14:18:57,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:18:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2236 transitions. [2020-10-13 14:18:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 14:18:57,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:57,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:57,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:18:57,589 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:57,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1049111571, now seen corresponding path program 1 times [2020-10-13 14:18:57,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:57,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313984038] [2020-10-13 14:18:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 14:19:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:19:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:02,810 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:02,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:19:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:02,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313984038] [2020-10-13 14:19:02,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:02,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:02,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666287171] [2020-10-13 14:19:02,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:02,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:02,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:02,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:02,873 INFO L87 Difference]: Start difference. First operand 1467 states and 2236 transitions. Second operand 4 states. [2020-10-13 14:19:03,054 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 14:19:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:04,886 INFO L93 Difference]: Finished difference Result 3751 states and 5732 transitions. [2020-10-13 14:19:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:04,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-13 14:19:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:04,905 INFO L225 Difference]: With dead ends: 3751 [2020-10-13 14:19:04,905 INFO L226 Difference]: Without dead ends: 2689 [2020-10-13 14:19:04,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-10-13 14:19:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2591. [2020-10-13 14:19:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-13 14:19:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3920 transitions. [2020-10-13 14:19:05,095 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3920 transitions. Word has length 168 [2020-10-13 14:19:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:05,096 INFO L479 AbstractCegarLoop]: Abstraction has 2591 states and 3920 transitions. [2020-10-13 14:19:05,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3920 transitions. [2020-10-13 14:19:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 14:19:05,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:05,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:05,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:19:05,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash 304919972, now seen corresponding path program 1 times [2020-10-13 14:19:05,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:05,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187757221] [2020-10-13 14:19:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 14:19:10,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:19:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:19:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 14:19:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:19:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:10,340 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:10,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:19:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:10,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187757221] [2020-10-13 14:19:10,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:10,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:10,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79390460] [2020-10-13 14:19:10,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:10,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:10,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:10,416 INFO L87 Difference]: Start difference. First operand 2591 states and 3920 transitions. Second operand 4 states. [2020-10-13 14:19:10,590 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 14:19:11,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:11,977 INFO L93 Difference]: Finished difference Result 6931 states and 10494 transitions. [2020-10-13 14:19:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:11,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-13 14:19:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:12,002 INFO L225 Difference]: With dead ends: 6931 [2020-10-13 14:19:12,002 INFO L226 Difference]: Without dead ends: 4881 [2020-10-13 14:19:12,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2020-10-13 14:19:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 4687. [2020-10-13 14:19:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2020-10-13 14:19:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7016 transitions. [2020-10-13 14:19:12,239 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7016 transitions. Word has length 170 [2020-10-13 14:19:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:12,240 INFO L479 AbstractCegarLoop]: Abstraction has 4687 states and 7016 transitions. [2020-10-13 14:19:12,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7016 transitions. [2020-10-13 14:19:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 14:19:12,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:12,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:12,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:19:12,256 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1678793969, now seen corresponding path program 1 times [2020-10-13 14:19:12,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:12,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519946944] [2020-10-13 14:19:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:17,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:17,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:19:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:17,486 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:17,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:17,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:17,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:17,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:19:17,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:17,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519946944] [2020-10-13 14:19:17,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:17,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:17,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591845170] [2020-10-13 14:19:17,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:17,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:17,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:17,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:17,540 INFO L87 Difference]: Start difference. First operand 4687 states and 7016 transitions. Second operand 4 states. [2020-10-13 14:19:17,707 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 14:19:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:19,433 INFO L93 Difference]: Finished difference Result 12067 states and 18002 transitions. [2020-10-13 14:19:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:19,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-13 14:19:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:19,472 INFO L225 Difference]: With dead ends: 12067 [2020-10-13 14:19:19,473 INFO L226 Difference]: Without dead ends: 8641 [2020-10-13 14:19:19,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8641 states. [2020-10-13 14:19:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8641 to 8255. [2020-10-13 14:19:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8255 states. [2020-10-13 14:19:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8255 states to 8255 states and 12152 transitions. [2020-10-13 14:19:19,895 INFO L78 Accepts]: Start accepts. Automaton has 8255 states and 12152 transitions. Word has length 172 [2020-10-13 14:19:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:19,896 INFO L479 AbstractCegarLoop]: Abstraction has 8255 states and 12152 transitions. [2020-10-13 14:19:19,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8255 states and 12152 transitions. [2020-10-13 14:19:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 14:19:19,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:19,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:19,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:19:19,919 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:19,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:19,919 INFO L82 PathProgramCache]: Analyzing trace with hash -758334667, now seen corresponding path program 1 times [2020-10-13 14:19:19,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:19,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030841064] [2020-10-13 14:19:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:24,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 14:19:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:19:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:19:24,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:19:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:19:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:25,157 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:25,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:25,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:25,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:25,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:19:25,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:19:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:25,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030841064] [2020-10-13 14:19:25,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:25,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:25,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603584321] [2020-10-13 14:19:25,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:25,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:25,226 INFO L87 Difference]: Start difference. First operand 8255 states and 12152 transitions. Second operand 4 states. [2020-10-13 14:19:25,467 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:19:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:26,891 INFO L93 Difference]: Finished difference Result 14171 states and 20954 transitions. [2020-10-13 14:19:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:26,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-13 14:19:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:26,922 INFO L225 Difference]: With dead ends: 14171 [2020-10-13 14:19:26,922 INFO L226 Difference]: Without dead ends: 7593 [2020-10-13 14:19:26,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2020-10-13 14:19:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7591. [2020-10-13 14:19:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7591 states. [2020-10-13 14:19:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 11224 transitions. [2020-10-13 14:19:27,248 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 11224 transitions. Word has length 174 [2020-10-13 14:19:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:27,249 INFO L479 AbstractCegarLoop]: Abstraction has 7591 states and 11224 transitions. [2020-10-13 14:19:27,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 11224 transitions. [2020-10-13 14:19:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 14:19:27,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:27,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:27,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:19:27,266 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash 729734246, now seen corresponding path program 1 times [2020-10-13 14:19:27,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:27,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359932117] [2020-10-13 14:19:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:32,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:32,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 14:19:32,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:19:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:19:32,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:19:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:19:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:32,494 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:32,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:32,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:32,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:19:32,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:32,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359932117] [2020-10-13 14:19:32,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:32,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054843435] [2020-10-13 14:19:32,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:32,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:32,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:32,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:32,530 INFO L87 Difference]: Start difference. First operand 7591 states and 11224 transitions. Second operand 4 states. [2020-10-13 14:19:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:33,933 INFO L93 Difference]: Finished difference Result 11051 states and 16394 transitions. [2020-10-13 14:19:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:19:33,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-13 14:19:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:33,952 INFO L225 Difference]: With dead ends: 11051 [2020-10-13 14:19:33,952 INFO L226 Difference]: Without dead ends: 5137 [2020-10-13 14:19:33,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2020-10-13 14:19:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 5135. [2020-10-13 14:19:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5135 states. [2020-10-13 14:19:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 7520 transitions. [2020-10-13 14:19:34,205 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 7520 transitions. Word has length 175 [2020-10-13 14:19:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:34,205 INFO L479 AbstractCegarLoop]: Abstraction has 5135 states and 7520 transitions. [2020-10-13 14:19:34,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 7520 transitions. [2020-10-13 14:19:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 14:19:34,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:34,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:34,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:19:34,215 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash 88907536, now seen corresponding path program 1 times [2020-10-13 14:19:34,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:34,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846016961] [2020-10-13 14:19:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:34,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:39,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:39,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 14:19:39,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:19:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:19:39,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 14:19:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:19:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:39,419 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:39,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:19:39,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:39,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846016961] [2020-10-13 14:19:39,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:39,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:39,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6186290] [2020-10-13 14:19:39,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:39,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:39,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:39,455 INFO L87 Difference]: Start difference. First operand 5135 states and 7520 transitions. Second operand 4 states. [2020-10-13 14:19:39,620 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:19:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:41,535 INFO L93 Difference]: Finished difference Result 13891 states and 20366 transitions. [2020-10-13 14:19:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:41,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-13 14:19:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:41,557 INFO L225 Difference]: With dead ends: 13891 [2020-10-13 14:19:41,558 INFO L226 Difference]: Without dead ends: 9393 [2020-10-13 14:19:41,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:41,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9393 states. [2020-10-13 14:19:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9393 to 9391. [2020-10-13 14:19:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9391 states. [2020-10-13 14:19:42,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9391 states to 9391 states and 13556 transitions. [2020-10-13 14:19:42,041 INFO L78 Accepts]: Start accepts. Automaton has 9391 states and 13556 transitions. Word has length 175 [2020-10-13 14:19:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:42,041 INFO L479 AbstractCegarLoop]: Abstraction has 9391 states and 13556 transitions. [2020-10-13 14:19:42,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 9391 states and 13556 transitions. [2020-10-13 14:19:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 14:19:42,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:42,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:42,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:19:42,057 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:42,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1457776146, now seen corresponding path program 1 times [2020-10-13 14:19:42,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:42,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711973549] [2020-10-13 14:19:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 14:19:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:19:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:19:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:19:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:19:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:47,253 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:47,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:47,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:19:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:47,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711973549] [2020-10-13 14:19:47,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:47,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:47,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154784262] [2020-10-13 14:19:47,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:47,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:47,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:47,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:47,296 INFO L87 Difference]: Start difference. First operand 9391 states and 13556 transitions. Second operand 4 states. [2020-10-13 14:19:47,466 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:19:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:49,566 INFO L93 Difference]: Finished difference Result 19827 states and 28714 transitions. [2020-10-13 14:19:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:49,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-13 14:19:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:49,600 INFO L225 Difference]: With dead ends: 19827 [2020-10-13 14:19:49,601 INFO L226 Difference]: Without dead ends: 13113 [2020-10-13 14:19:49,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2020-10-13 14:19:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 13111. [2020-10-13 14:19:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13111 states. [2020-10-13 14:19:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13111 states to 13111 states and 18872 transitions. [2020-10-13 14:19:50,274 INFO L78 Accepts]: Start accepts. Automaton has 13111 states and 18872 transitions. Word has length 175 [2020-10-13 14:19:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:50,275 INFO L479 AbstractCegarLoop]: Abstraction has 13111 states and 18872 transitions. [2020-10-13 14:19:50,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 13111 states and 18872 transitions. [2020-10-13 14:19:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 14:19:50,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:50,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:50,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:19:50,290 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:50,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1947041325, now seen corresponding path program 1 times [2020-10-13 14:19:50,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:50,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157954983] [2020-10-13 14:19:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:55,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:19:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:55,491 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:19:55,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:55,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:55,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:55,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:19:55,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:19:55,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157954983] [2020-10-13 14:19:55,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:55,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:19:55,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49505697] [2020-10-13 14:19:55,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:19:55,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:55,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:19:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:19:55,526 INFO L87 Difference]: Start difference. First operand 13111 states and 18872 transitions. Second operand 4 states. [2020-10-13 14:19:55,700 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:19:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:57,535 INFO L93 Difference]: Finished difference Result 24843 states and 35842 transitions. [2020-10-13 14:19:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:19:57,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-13 14:19:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:57,567 INFO L225 Difference]: With dead ends: 24843 [2020-10-13 14:19:57,567 INFO L226 Difference]: Without dead ends: 12907 [2020-10-13 14:19:57,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:19:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2020-10-13 14:19:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12905. [2020-10-13 14:19:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12905 states. [2020-10-13 14:19:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12905 states to 12905 states and 18608 transitions. [2020-10-13 14:19:58,226 INFO L78 Accepts]: Start accepts. Automaton has 12905 states and 18608 transitions. Word has length 177 [2020-10-13 14:19:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:58,227 INFO L479 AbstractCegarLoop]: Abstraction has 12905 states and 18608 transitions. [2020-10-13 14:19:58,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:19:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 12905 states and 18608 transitions. [2020-10-13 14:19:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 14:19:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:58,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:58,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:19:58,242 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:58,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1405566763, now seen corresponding path program 1 times [2020-10-13 14:19:58,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:58,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803151234] [2020-10-13 14:19:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:03,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:20:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:20:03,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:03,443 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:03,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:03,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:20:03,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803151234] [2020-10-13 14:20:03,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:03,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:20:03,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525910175] [2020-10-13 14:20:03,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:20:03,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:03,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:20:03,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:03,481 INFO L87 Difference]: Start difference. First operand 12905 states and 18608 transitions. Second operand 4 states. [2020-10-13 14:20:03,653 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:20:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:05,331 INFO L93 Difference]: Finished difference Result 24233 states and 34986 transitions. [2020-10-13 14:20:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:20:05,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-13 14:20:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:05,352 INFO L225 Difference]: With dead ends: 24233 [2020-10-13 14:20:05,352 INFO L226 Difference]: Without dead ends: 12699 [2020-10-13 14:20:05,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:20:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12699 states. [2020-10-13 14:20:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12699 to 12697. [2020-10-13 14:20:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12697 states. [2020-10-13 14:20:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12697 states to 12697 states and 18324 transitions. [2020-10-13 14:20:06,023 INFO L78 Accepts]: Start accepts. Automaton has 12697 states and 18324 transitions. Word has length 178 [2020-10-13 14:20:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:06,024 INFO L479 AbstractCegarLoop]: Abstraction has 12697 states and 18324 transitions. [2020-10-13 14:20:06,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:20:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 12697 states and 18324 transitions. [2020-10-13 14:20:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 14:20:06,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:06,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:06,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:20:06,041 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash 669615418, now seen corresponding path program 1 times [2020-10-13 14:20:06,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:06,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836219247] [2020-10-13 14:20:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:11,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 14:20:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:20:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:11,275 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:20:11,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836219247] [2020-10-13 14:20:11,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:11,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:20:11,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174980270] [2020-10-13 14:20:11,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:20:11,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:20:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:20:11,305 INFO L87 Difference]: Start difference. First operand 12697 states and 18324 transitions. Second operand 6 states. [2020-10-13 14:20:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:14,134 INFO L93 Difference]: Finished difference Result 36184 states and 52209 transitions. [2020-10-13 14:20:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:20:14,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-10-13 14:20:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:14,162 INFO L225 Difference]: With dead ends: 36184 [2020-10-13 14:20:14,162 INFO L226 Difference]: Without dead ends: 23868 [2020-10-13 14:20:14,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:20:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23868 states. [2020-10-13 14:20:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23868 to 12659. [2020-10-13 14:20:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12659 states. [2020-10-13 14:20:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12659 states to 12659 states and 18082 transitions. [2020-10-13 14:20:14,793 INFO L78 Accepts]: Start accepts. Automaton has 12659 states and 18082 transitions. Word has length 179 [2020-10-13 14:20:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:14,794 INFO L479 AbstractCegarLoop]: Abstraction has 12659 states and 18082 transitions. [2020-10-13 14:20:14,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:20:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12659 states and 18082 transitions. [2020-10-13 14:20:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 14:20:14,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:14,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:14,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:20:14,803 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash -251843154, now seen corresponding path program 1 times [2020-10-13 14:20:14,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:14,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050476074] [2020-10-13 14:20:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:14,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:20:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:20,094 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:20:20,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050476074] [2020-10-13 14:20:20,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:20,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:20:20,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140954434] [2020-10-13 14:20:20,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:20:20,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:20,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:20:20,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:20,129 INFO L87 Difference]: Start difference. First operand 12659 states and 18082 transitions. Second operand 4 states. [2020-10-13 14:20:20,307 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:20:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:21,949 INFO L93 Difference]: Finished difference Result 23291 states and 33298 transitions. [2020-10-13 14:20:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:20:21,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-13 14:20:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:21,963 INFO L225 Difference]: With dead ends: 23291 [2020-10-13 14:20:21,963 INFO L226 Difference]: Without dead ends: 12294 [2020-10-13 14:20:21,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:20:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2020-10-13 14:20:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 12292. [2020-10-13 14:20:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12292 states. [2020-10-13 14:20:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12292 states to 12292 states and 17563 transitions. [2020-10-13 14:20:22,507 INFO L78 Accepts]: Start accepts. Automaton has 12292 states and 17563 transitions. Word has length 179 [2020-10-13 14:20:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:22,507 INFO L479 AbstractCegarLoop]: Abstraction has 12292 states and 17563 transitions. [2020-10-13 14:20:22,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:20:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 12292 states and 17563 transitions. [2020-10-13 14:20:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 14:20:22,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:22,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:22,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:20:22,517 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash 36790535, now seen corresponding path program 1 times [2020-10-13 14:20:22,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:22,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544530984] [2020-10-13 14:20:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:27,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 14:20:27,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:20:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:20:27,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 14:20:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:20:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:27,726 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:27,760 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 14:20:27,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544530984] [2020-10-13 14:20:27,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:27,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:20:27,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086368773] [2020-10-13 14:20:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:20:27,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:27,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:20:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:27,763 INFO L87 Difference]: Start difference. First operand 12292 states and 17563 transitions. Second operand 4 states. [2020-10-13 14:20:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:29,194 INFO L93 Difference]: Finished difference Result 16992 states and 24317 transitions. [2020-10-13 14:20:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:20:29,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-10-13 14:20:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:29,201 INFO L225 Difference]: With dead ends: 16992 [2020-10-13 14:20:29,202 INFO L226 Difference]: Without dead ends: 6362 [2020-10-13 14:20:29,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2020-10-13 14:20:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 6360. [2020-10-13 14:20:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6360 states. [2020-10-13 14:20:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9001 transitions. [2020-10-13 14:20:29,510 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9001 transitions. Word has length 180 [2020-10-13 14:20:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:29,510 INFO L479 AbstractCegarLoop]: Abstraction has 6360 states and 9001 transitions. [2020-10-13 14:20:29,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:20:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9001 transitions. [2020-10-13 14:20:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 14:20:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:29,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:20:29,516 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -658095236, now seen corresponding path program 1 times [2020-10-13 14:20:29,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:29,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375603778] [2020-10-13 14:20:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:34,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:34,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 14:20:34,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:20:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:20:34,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:20:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:20:34,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:34,720 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:34,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:20:34,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:20:34,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375603778] [2020-10-13 14:20:34,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:34,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:20:34,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470784611] [2020-10-13 14:20:34,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:20:34,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:34,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:20:34,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:34,758 INFO L87 Difference]: Start difference. First operand 6360 states and 9001 transitions. Second operand 4 states. [2020-10-13 14:20:34,945 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:20:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:36,303 INFO L93 Difference]: Finished difference Result 11486 states and 16261 transitions. [2020-10-13 14:20:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:20:36,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-10-13 14:20:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:36,310 INFO L225 Difference]: With dead ends: 11486 [2020-10-13 14:20:36,311 INFO L226 Difference]: Without dead ends: 6107 [2020-10-13 14:20:36,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:20:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6107 states. [2020-10-13 14:20:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6107 to 6105. [2020-10-13 14:20:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6105 states. [2020-10-13 14:20:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 8636 transitions. [2020-10-13 14:20:36,573 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 8636 transitions. Word has length 180 [2020-10-13 14:20:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:36,573 INFO L479 AbstractCegarLoop]: Abstraction has 6105 states and 8636 transitions. [2020-10-13 14:20:36,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:20:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 8636 transitions. [2020-10-13 14:20:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:20:36,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:36,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:36,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:20:36,581 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:36,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1105628847, now seen corresponding path program 1 times [2020-10-13 14:20:36,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:36,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202650071] [2020-10-13 14:20:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:38,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:41,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:41,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:20:41,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:20:41,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:20:41,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 14:20:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:20:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:41,786 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:20:41,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202650071] [2020-10-13 14:20:41,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:41,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:20:41,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702631144] [2020-10-13 14:20:41,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:20:41,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:41,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:20:41,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:41,822 INFO L87 Difference]: Start difference. First operand 6105 states and 8636 transitions. Second operand 4 states. [2020-10-13 14:20:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:43,036 INFO L93 Difference]: Finished difference Result 8349 states and 11834 transitions. [2020-10-13 14:20:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:20:43,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-10-13 14:20:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:43,040 INFO L225 Difference]: With dead ends: 8349 [2020-10-13 14:20:43,040 INFO L226 Difference]: Without dead ends: 3225 [2020-10-13 14:20:43,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:20:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2020-10-13 14:20:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 3223. [2020-10-13 14:20:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3223 states. [2020-10-13 14:20:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4524 transitions. [2020-10-13 14:20:43,181 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4524 transitions. Word has length 181 [2020-10-13 14:20:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:43,181 INFO L479 AbstractCegarLoop]: Abstraction has 3223 states and 4524 transitions. [2020-10-13 14:20:43,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:20:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4524 transitions. [2020-10-13 14:20:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:20:43,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:43,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:43,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:20:43,184 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1145120134, now seen corresponding path program 1 times [2020-10-13 14:20:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379243689] [2020-10-13 14:20:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:20:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:48,486 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 14 [2020-10-13 14:20:48,706 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:20:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:48,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:48,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:48,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:48,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:20:48,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:20:48,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379243689] [2020-10-13 14:20:48,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:48,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:20:48,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073836008] [2020-10-13 14:20:48,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:20:48,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:48,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:20:48,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:20:48,765 INFO L87 Difference]: Start difference. First operand 3223 states and 4524 transitions. Second operand 11 states. [2020-10-13 14:20:48,998 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:20:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:54,796 INFO L93 Difference]: Finished difference Result 8351 states and 11707 transitions. [2020-10-13 14:20:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 14:20:54,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2020-10-13 14:20:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:54,803 INFO L225 Difference]: With dead ends: 8351 [2020-10-13 14:20:54,803 INFO L226 Difference]: Without dead ends: 6144 [2020-10-13 14:20:54,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:20:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2020-10-13 14:20:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 3257. [2020-10-13 14:20:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3257 states. [2020-10-13 14:20:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4570 transitions. [2020-10-13 14:20:55,025 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4570 transitions. Word has length 181 [2020-10-13 14:20:55,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:55,025 INFO L479 AbstractCegarLoop]: Abstraction has 3257 states and 4570 transitions. [2020-10-13 14:20:55,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:20:55,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4570 transitions. [2020-10-13 14:20:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:20:55,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:55,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:55,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:20:55,028 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1667540224, now seen corresponding path program 1 times [2020-10-13 14:20:55,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:55,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475771706] [2020-10-13 14:20:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:00,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:21:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:00,248 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:00,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:00,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:00,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475771706] [2020-10-13 14:21:00,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:00,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:21:00,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537082306] [2020-10-13 14:21:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:21:00,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:21:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:00,284 INFO L87 Difference]: Start difference. First operand 3257 states and 4570 transitions. Second operand 4 states. [2020-10-13 14:21:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:01,367 INFO L93 Difference]: Finished difference Result 4543 states and 6377 transitions. [2020-10-13 14:21:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:21:01,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-10-13 14:21:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:01,370 INFO L225 Difference]: With dead ends: 4543 [2020-10-13 14:21:01,370 INFO L226 Difference]: Without dead ends: 1710 [2020-10-13 14:21:01,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-10-13 14:21:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1708. [2020-10-13 14:21:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2020-10-13 14:21:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2363 transitions. [2020-10-13 14:21:01,461 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2363 transitions. Word has length 181 [2020-10-13 14:21:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:01,461 INFO L479 AbstractCegarLoop]: Abstraction has 1708 states and 2363 transitions. [2020-10-13 14:21:01,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:21:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2363 transitions. [2020-10-13 14:21:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:21:01,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:01,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:01,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:21:01,464 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:01,464 INFO L82 PathProgramCache]: Analyzing trace with hash -15143372, now seen corresponding path program 1 times [2020-10-13 14:21:01,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:01,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791581682] [2020-10-13 14:21:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:06,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:21:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:21:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:06,693 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:06,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:06,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:06,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:21:06,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:21:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:06,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791581682] [2020-10-13 14:21:06,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:06,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:21:06,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503394061] [2020-10-13 14:21:06,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:21:06,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:06,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:21:06,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:21:06,773 INFO L87 Difference]: Start difference. First operand 1708 states and 2363 transitions. Second operand 6 states. [2020-10-13 14:21:06,964 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:21:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:08,303 INFO L93 Difference]: Finished difference Result 4749 states and 6575 transitions. [2020-10-13 14:21:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:21:08,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-10-13 14:21:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:08,308 INFO L225 Difference]: With dead ends: 4749 [2020-10-13 14:21:08,308 INFO L226 Difference]: Without dead ends: 3084 [2020-10-13 14:21:08,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:21:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2020-10-13 14:21:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 3082. [2020-10-13 14:21:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3082 states. [2020-10-13 14:21:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4229 transitions. [2020-10-13 14:21:08,500 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4229 transitions. Word has length 181 [2020-10-13 14:21:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:08,500 INFO L479 AbstractCegarLoop]: Abstraction has 3082 states and 4229 transitions. [2020-10-13 14:21:08,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:21:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4229 transitions. [2020-10-13 14:21:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:21:08,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:08,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:08,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:21:08,503 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash 942625433, now seen corresponding path program 1 times [2020-10-13 14:21:08,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:08,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348242480] [2020-10-13 14:21:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:13,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:13,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:21:13,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:21:13,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:21:13,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:21:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:21:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:21:13,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:13,717 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:13,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:21:13,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:13,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348242480] [2020-10-13 14:21:13,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:13,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:21:13,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439507574] [2020-10-13 14:21:13,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:21:13,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:13,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:21:13,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:21:13,765 INFO L87 Difference]: Start difference. First operand 3082 states and 4229 transitions. Second operand 7 states. [2020-10-13 14:21:13,954 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:21:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:16,855 INFO L93 Difference]: Finished difference Result 23090 states and 31891 transitions. [2020-10-13 14:21:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:21:16,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-13 14:21:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:16,877 INFO L225 Difference]: With dead ends: 23090 [2020-10-13 14:21:16,878 INFO L226 Difference]: Without dead ends: 20109 [2020-10-13 14:21:16,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:21:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20109 states. [2020-10-13 14:21:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20109 to 8764. [2020-10-13 14:21:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8764 states. [2020-10-13 14:21:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8764 states to 8764 states and 12066 transitions. [2020-10-13 14:21:17,531 INFO L78 Accepts]: Start accepts. Automaton has 8764 states and 12066 transitions. Word has length 181 [2020-10-13 14:21:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:17,531 INFO L479 AbstractCegarLoop]: Abstraction has 8764 states and 12066 transitions. [2020-10-13 14:21:17,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:21:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8764 states and 12066 transitions. [2020-10-13 14:21:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:21:17,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:17,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:17,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:21:17,540 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2099373103, now seen corresponding path program 1 times [2020-10-13 14:21:17,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:17,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124679605] [2020-10-13 14:21:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:21:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:21:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:21:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:21:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 14:21:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:21:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:22,781 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:21:22,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:22,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124679605] [2020-10-13 14:21:22,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:22,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:21:22,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036094385] [2020-10-13 14:21:22,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:21:22,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:22,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:21:22,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:21:22,861 INFO L87 Difference]: Start difference. First operand 8764 states and 12066 transitions. Second operand 5 states. [2020-10-13 14:21:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:24,238 INFO L93 Difference]: Finished difference Result 15681 states and 21625 transitions. [2020-10-13 14:21:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:21:24,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 14:21:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:24,246 INFO L225 Difference]: With dead ends: 15681 [2020-10-13 14:21:24,246 INFO L226 Difference]: Without dead ends: 7780 [2020-10-13 14:21:24,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:21:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2020-10-13 14:21:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7588. [2020-10-13 14:21:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7588 states. [2020-10-13 14:21:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7588 states to 7588 states and 10473 transitions. [2020-10-13 14:21:24,749 INFO L78 Accepts]: Start accepts. Automaton has 7588 states and 10473 transitions. Word has length 181 [2020-10-13 14:21:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:24,750 INFO L479 AbstractCegarLoop]: Abstraction has 7588 states and 10473 transitions. [2020-10-13 14:21:24,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:21:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7588 states and 10473 transitions. [2020-10-13 14:21:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 14:21:24,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:24,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:24,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:21:24,755 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:24,755 INFO L82 PathProgramCache]: Analyzing trace with hash 753381423, now seen corresponding path program 1 times [2020-10-13 14:21:24,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:24,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939857140] [2020-10-13 14:21:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:29,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:29,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 14:21:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:21:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:21:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 14:21:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:21:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:29,965 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:21:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:30,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939857140] [2020-10-13 14:21:30,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:30,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:21:30,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585491098] [2020-10-13 14:21:30,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:21:30,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:21:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:30,003 INFO L87 Difference]: Start difference. First operand 7588 states and 10473 transitions. Second operand 4 states. [2020-10-13 14:21:31,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:31,103 INFO L93 Difference]: Finished difference Result 10241 states and 14132 transitions. [2020-10-13 14:21:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:21:31,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2020-10-13 14:21:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:31,107 INFO L225 Difference]: With dead ends: 10241 [2020-10-13 14:21:31,108 INFO L226 Difference]: Without dead ends: 3408 [2020-10-13 14:21:31,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2020-10-13 14:21:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3322. [2020-10-13 14:21:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3322 states. [2020-10-13 14:21:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4511 transitions. [2020-10-13 14:21:31,349 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4511 transitions. Word has length 184 [2020-10-13 14:21:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:31,349 INFO L479 AbstractCegarLoop]: Abstraction has 3322 states and 4511 transitions. [2020-10-13 14:21:31,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:21:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4511 transitions. [2020-10-13 14:21:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 14:21:31,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:31,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:31,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:21:31,352 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash 62410969, now seen corresponding path program 1 times [2020-10-13 14:21:31,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:31,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535277754] [2020-10-13 14:21:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 14:21:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:21:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:21:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:21:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:21:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:21:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:36,571 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:21:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:21:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:36,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535277754] [2020-10-13 14:21:36,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:36,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:21:36,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953065787] [2020-10-13 14:21:36,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:21:36,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:36,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:21:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:21:36,616 INFO L87 Difference]: Start difference. First operand 3322 states and 4511 transitions. Second operand 6 states. [2020-10-13 14:21:36,811 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:21:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:38,040 INFO L93 Difference]: Finished difference Result 5409 states and 7346 transitions. [2020-10-13 14:21:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:21:38,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2020-10-13 14:21:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:38,044 INFO L225 Difference]: With dead ends: 5409 [2020-10-13 14:21:38,044 INFO L226 Difference]: Without dead ends: 3311 [2020-10-13 14:21:38,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:21:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2020-10-13 14:21:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2280. [2020-10-13 14:21:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-10-13 14:21:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3060 transitions. [2020-10-13 14:21:38,225 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3060 transitions. Word has length 186 [2020-10-13 14:21:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:38,226 INFO L479 AbstractCegarLoop]: Abstraction has 2280 states and 3060 transitions. [2020-10-13 14:21:38,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:21:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3060 transitions. [2020-10-13 14:21:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 14:21:38,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:38,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:38,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:21:38,228 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:38,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1903933657, now seen corresponding path program 1 times [2020-10-13 14:21:38,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:38,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588020155] [2020-10-13 14:21:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 14:21:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:21:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 14:21:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:21:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:21:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:43,467 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:43,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:43,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:21:43,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:43,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588020155] [2020-10-13 14:21:43,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:43,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:21:43,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784596370] [2020-10-13 14:21:43,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:21:43,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:21:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:43,503 INFO L87 Difference]: Start difference. First operand 2280 states and 3060 transitions. Second operand 4 states. [2020-10-13 14:21:43,668 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 14:21:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:45,013 INFO L93 Difference]: Finished difference Result 6311 states and 8477 transitions. [2020-10-13 14:21:45,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:21:45,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-10-13 14:21:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:45,018 INFO L225 Difference]: With dead ends: 6311 [2020-10-13 14:21:45,019 INFO L226 Difference]: Without dead ends: 4483 [2020-10-13 14:21:45,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:21:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2020-10-13 14:21:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 4481. [2020-10-13 14:21:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4481 states. [2020-10-13 14:21:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 5983 transitions. [2020-10-13 14:21:45,416 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 5983 transitions. Word has length 186 [2020-10-13 14:21:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:45,417 INFO L479 AbstractCegarLoop]: Abstraction has 4481 states and 5983 transitions. [2020-10-13 14:21:45,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:21:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 5983 transitions. [2020-10-13 14:21:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 14:21:45,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:45,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:45,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:21:45,421 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:45,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1095544335, now seen corresponding path program 1 times [2020-10-13 14:21:45,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:45,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188142796] [2020-10-13 14:21:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:46,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 14:21:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:21:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:50,633 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:50,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:50,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:50,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:21:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:50,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188142796] [2020-10-13 14:21:50,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:50,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:21:50,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553182233] [2020-10-13 14:21:50,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:21:50,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:50,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:21:50,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:50,681 INFO L87 Difference]: Start difference. First operand 4481 states and 5983 transitions. Second operand 4 states. [2020-10-13 14:21:50,845 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:21:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:52,259 INFO L93 Difference]: Finished difference Result 7453 states and 9981 transitions. [2020-10-13 14:21:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:21:52,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-10-13 14:21:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:52,265 INFO L225 Difference]: With dead ends: 7453 [2020-10-13 14:21:52,265 INFO L226 Difference]: Without dead ends: 4491 [2020-10-13 14:21:52,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:21:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-10-13 14:21:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 4481. [2020-10-13 14:21:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4481 states. [2020-10-13 14:21:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 5951 transitions. [2020-10-13 14:21:52,621 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 5951 transitions. Word has length 186 [2020-10-13 14:21:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:52,621 INFO L479 AbstractCegarLoop]: Abstraction has 4481 states and 5951 transitions. [2020-10-13 14:21:52,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:21:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 5951 transitions. [2020-10-13 14:21:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 14:21:52,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:52,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:52,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:21:52,625 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1828604907, now seen corresponding path program 1 times [2020-10-13 14:21:52,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:52,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503090183] [2020-10-13 14:21:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 14:21:57,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:21:57,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:57,843 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:21:57,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:57,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:21:57,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503090183] [2020-10-13 14:21:57,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:57,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:21:57,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86150610] [2020-10-13 14:21:57,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:21:57,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:57,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:21:57,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:57,878 INFO L87 Difference]: Start difference. First operand 4481 states and 5951 transitions. Second operand 4 states. [2020-10-13 14:21:58,038 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 14:21:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:59,701 INFO L93 Difference]: Finished difference Result 12275 states and 16305 transitions. [2020-10-13 14:21:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:21:59,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-10-13 14:21:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:59,710 INFO L225 Difference]: With dead ends: 12275 [2020-10-13 14:21:59,710 INFO L226 Difference]: Without dead ends: 8833 [2020-10-13 14:21:59,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:21:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2020-10-13 14:22:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2020-10-13 14:22:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2020-10-13 14:22:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11651 transitions. [2020-10-13 14:22:00,431 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11651 transitions. Word has length 187 [2020-10-13 14:22:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:00,431 INFO L479 AbstractCegarLoop]: Abstraction has 8831 states and 11651 transitions. [2020-10-13 14:22:00,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11651 transitions. [2020-10-13 14:22:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 14:22:00,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:00,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:22:00,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:22:00,442 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:00,442 INFO L82 PathProgramCache]: Analyzing trace with hash 955945781, now seen corresponding path program 1 times [2020-10-13 14:22:00,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:00,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845911566] [2020-10-13 14:22:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:05,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:05,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-13 14:22:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:22:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:22:05,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:22:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:22:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:22:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:05,675 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:22:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:22:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:22:05,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845911566] [2020-10-13 14:22:05,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:05,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:22:05,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767606831] [2020-10-13 14:22:05,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:22:05,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:05,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:22:05,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:22:05,720 INFO L87 Difference]: Start difference. First operand 8831 states and 11651 transitions. Second operand 6 states. [2020-10-13 14:22:05,909 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154