/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:54:02,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:54:02,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:54:02,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:54:02,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:54:02,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:54:02,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:54:02,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:54:02,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:54:02,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:54:02,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:54:02,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:54:02,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:54:02,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:54:02,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:54:02,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:54:02,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:54:02,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:54:02,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:54:02,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:54:02,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:54:02,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:54:02,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:54:02,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:54:02,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:54:02,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:54:02,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:54:02,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:54:02,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:54:02,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:54:02,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:54:02,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:54:02,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:54:02,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:54:02,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:54:02,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:54:02,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:54:02,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:54:02,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:54:02,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:54:02,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:54:02,993 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 [2020-09-25 01:54:03,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:54:03,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:54:03,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:54:03,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:54:03,022 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:54:03,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:54:03,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:54:03,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:54:03,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:54:03,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:54:03,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:54:03,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:54:03,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:54:03,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:54:03,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:54:03,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:54:03,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:54:03,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:54:03,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:54:03,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:54:03,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:54:03,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:54:03,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:54:03,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:54:03,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:54:03,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:54:03,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:54:03,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:54:03,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:54:03,031 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-25 01:54:03,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:54:03,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:54:03,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:54:03,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:54:03,542 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:54:03,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-09-25 01:54:03,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131621f46/95925749bc32483cbc3b0b981ef8ad95/FLAG789d67233 [2020-09-25 01:54:04,293 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:54:04,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-09-25 01:54:04,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131621f46/95925749bc32483cbc3b0b981ef8ad95/FLAG789d67233 [2020-09-25 01:54:04,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131621f46/95925749bc32483cbc3b0b981ef8ad95 [2020-09-25 01:54:04,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:54:04,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:54:04,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:04,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:54:04,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:54:04,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:54:04" (1/1) ... [2020-09-25 01:54:04,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:04, skipping insertion in model container [2020-09-25 01:54:04,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:54:04" (1/1) ... [2020-09-25 01:54:04,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:54:04,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:54:05,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:05,125 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:54:05,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:05,287 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:54:05,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05 WrapperNode [2020-09-25 01:54:05,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:05,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:54:05,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:54:05,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:54:05,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (1/1) ... [2020-09-25 01:54:05,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:54:05,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:54:05,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:54:05,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:54:05,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (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 [2020-09-25 01:54:05,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:54:05,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:54:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:54:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:54:05,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:54:05,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 01:54:05,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:54:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:54:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:54:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:54:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:54:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:54:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:54:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:54:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:54:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:54:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:54:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:54:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:54:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:54:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:54:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:54:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:54:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:54:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:54:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:54:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:54:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:54:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:54:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:54:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:54:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:54:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:54:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:54:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:54:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:54:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:54:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:54:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:54:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:54:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:54:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:54:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:54:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:54:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:54:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:54:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:54:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:54:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:54:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:54:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:54:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:54:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:54:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:54:05,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:05,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:54:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:54:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:54:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:54:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:54:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:54:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:54:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:54:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:54:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:54:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:54:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:54:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:54:06,759 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:54:06,759 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:54:06,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:06 BoogieIcfgContainer [2020-09-25 01:54:06,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:54:06,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:54:06,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:54:06,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:54:06,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:54:04" (1/3) ... [2020-09-25 01:54:06,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2300034b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:06, skipping insertion in model container [2020-09-25 01:54:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:05" (2/3) ... [2020-09-25 01:54:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2300034b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:06, skipping insertion in model container [2020-09-25 01:54:06,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:06" (3/3) ... [2020-09-25 01:54:06,785 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-09-25 01:54:06,799 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:54:06,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:54:06,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:54:06,889 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:54:06,890 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:54:06,890 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:54:06,890 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:54:06,890 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:54:06,890 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:54:06,890 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:54:06,891 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:54:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-09-25 01:54:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:54:06,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:06,971 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] [2020-09-25 01:54:06,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2095519096, now seen corresponding path program 1 times [2020-09-25 01:54:06,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:06,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108270181] [2020-09-25 01:54:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:12,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:12,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:54:12,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 01:54:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:54:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:54:12,762 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:12,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:12,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:12,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:12,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 01:54:12,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:54:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:13,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:13,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:13,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:13,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:54:13,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:54:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:13,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:13,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:13,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:13,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:13,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:13,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:13,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108270181] [2020-09-25 01:54:13,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:13,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:54:13,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532902269] [2020-09-25 01:54:13,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:54:13,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:54:13,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:13,154 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2020-09-25 01:54:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:14,727 INFO L93 Difference]: Finished difference Result 497 states and 590 transitions. [2020-09-25 01:54:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:54:14,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:54:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:14,750 INFO L225 Difference]: With dead ends: 497 [2020-09-25 01:54:14,750 INFO L226 Difference]: Without dead ends: 307 [2020-09-25 01:54:14,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-25 01:54:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 264. [2020-09-25 01:54:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-25 01:54:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2020-09-25 01:54:14,863 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 142 [2020-09-25 01:54:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:14,865 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2020-09-25 01:54:14,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:54:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2020-09-25 01:54:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:54:14,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:14,869 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] [2020-09-25 01:54:14,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:54:14,870 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:14,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:14,870 INFO L82 PathProgramCache]: Analyzing trace with hash -89616240, now seen corresponding path program 1 times [2020-09-25 01:54:14,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:14,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076475175] [2020-09-25 01:54:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:14,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:54:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 01:54:19,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:54:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:20,269 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:20,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 01:54:20,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:20,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:20,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:20,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:20,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:20,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:20,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:54:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:20,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:20,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:20,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:20,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:20,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:20,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076475175] [2020-09-25 01:54:20,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:20,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:54:20,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983359888] [2020-09-25 01:54:20,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:54:20,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:20,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:54:20,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:54:20,562 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2020-09-25 01:54:21,240 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:22,388 INFO L93 Difference]: Finished difference Result 414 states and 465 transitions. [2020-09-25 01:54:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:54:22,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:54:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:22,394 INFO L225 Difference]: With dead ends: 414 [2020-09-25 01:54:22,394 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 01:54:22,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 01:54:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 254. [2020-09-25 01:54:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-25 01:54:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2020-09-25 01:54:22,439 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 143 [2020-09-25 01:54:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:22,440 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2020-09-25 01:54:22,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:54:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2020-09-25 01:54:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 01:54:22,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:22,443 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] [2020-09-25 01:54:22,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:54:22,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash -407616120, now seen corresponding path program 1 times [2020-09-25 01:54:22,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:22,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576348686] [2020-09-25 01:54:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:27,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:27,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 01:54:27,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 01:54:27,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:54:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:54:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:27,848 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:27,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 01:54:27,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:28,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:28,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:28,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:28,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:28,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:28,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:28,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:28,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 01:54:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:28,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:54:28,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:28,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576348686] [2020-09-25 01:54:28,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:28,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:54:28,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345059824] [2020-09-25 01:54:28,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:54:28,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:28,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:54:28,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:54:28,113 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 8 states. [2020-09-25 01:54:28,598 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:29,728 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:30,074 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:30,407 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:30,737 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:31,045 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:31,915 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:32,224 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:32,577 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:33,306 INFO L93 Difference]: Finished difference Result 528 states and 608 transitions. [2020-09-25 01:54:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 01:54:33,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 01:54:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:33,312 INFO L225 Difference]: With dead ends: 528 [2020-09-25 01:54:33,313 INFO L226 Difference]: Without dead ends: 384 [2020-09-25 01:54:33,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:54:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-09-25 01:54:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 355. [2020-09-25 01:54:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-09-25 01:54:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 393 transitions. [2020-09-25 01:54:33,367 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 393 transitions. Word has length 152 [2020-09-25 01:54:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:33,368 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 393 transitions. [2020-09-25 01:54:33,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:54:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 393 transitions. [2020-09-25 01:54:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 01:54:33,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:33,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:33,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:54:33,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:33,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1054820199, now seen corresponding path program 1 times [2020-09-25 01:54:33,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:33,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101517100] [2020-09-25 01:54:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 01:54:38,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:54:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 01:54:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-25 01:54:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:38,772 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:38,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 01:54:38,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:38,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:38,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:38,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:38,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:38,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:38,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:38,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:38,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:38,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:38,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:39,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:54:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 01:54:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 01:54:39,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:54:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 01:54:39,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 01:54:39,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:54:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:54:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:54:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 01:54:39,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:54:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:54:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:54:39,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:54:39,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:54:39,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:54:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:54:39,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 01:54:39,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:54:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:54:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:54:39,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:39,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:54:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:54:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 01:54:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-25 01:54:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:39,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101517100] [2020-09-25 01:54:39,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:39,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:54:39,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628789841] [2020-09-25 01:54:39,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:54:39,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:39,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:54:39,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:54:39,660 INFO L87 Difference]: Start difference. First operand 355 states and 393 transitions. Second operand 9 states. [2020-09-25 01:54:41,126 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:41,459 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:41,767 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:54:42,080 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:42,403 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:54:42,691 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:43,557 INFO L93 Difference]: Finished difference Result 662 states and 779 transitions. [2020-09-25 01:54:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:54:43,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-09-25 01:54:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:43,566 INFO L225 Difference]: With dead ends: 662 [2020-09-25 01:54:43,566 INFO L226 Difference]: Without dead ends: 417 [2020-09-25 01:54:43,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:54:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-25 01:54:43,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 363. [2020-09-25 01:54:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-25 01:54:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 401 transitions. [2020-09-25 01:54:43,655 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 401 transitions. Word has length 212 [2020-09-25 01:54:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:43,656 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 401 transitions. [2020-09-25 01:54:43,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:54:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 401 transitions. [2020-09-25 01:54:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 01:54:43,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:43,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:43,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:54:43,660 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1556038905, now seen corresponding path program 1 times [2020-09-25 01:54:43,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:43,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660200239] [2020-09-25 01:54:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:44,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:48,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:48,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 01:54:48,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:54:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 01:54:48,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 01:54:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,051 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 01:54:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:49,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:49,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:49,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:49,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:49,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:54:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 01:54:49,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 01:54:49,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:54:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 01:54:49,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 01:54:49,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:54:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:54:49,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 01:54:49,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:54:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:54:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:54:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:54:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:54:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:54:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:54:49,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 01:54:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:54:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:54:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:54:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:49,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:54:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:49,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:49,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:54:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 01:54:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:49,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-25 01:54:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:49,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:49,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:49,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:49,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:49,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:49,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660200239] [2020-09-25 01:54:49,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:49,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:54:49,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243271654] [2020-09-25 01:54:49,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:54:49,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:49,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:54:49,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:54:49,718 INFO L87 Difference]: Start difference. First operand 363 states and 401 transitions. Second operand 8 states. [2020-09-25 01:54:50,984 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188