/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_spec2_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:47:36,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:47:36,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:47:36,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:47:36,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:47:36,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:47:36,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:47:36,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:47:36,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:47:36,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:47:36,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:47:36,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:47:36,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:47:36,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:47:36,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:47:36,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:47:36,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:47:36,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:47:36,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:47:36,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:47:36,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:47:36,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:47:36,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:47:36,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:47:36,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:47:36,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:47:36,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:47:36,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:47:36,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:47:36,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:47:36,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:47:36,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:47:36,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:47:36,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:47:36,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:47:36,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:47:36,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:47:36,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:47:36,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:47:36,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:47:36,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:47:36,442 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 01:47:36,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:47:36,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:47:36,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:47:36,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:47:36,486 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:47:36,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:47:36,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:47:36,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:47:36,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:47:36,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:47:36,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:47:36,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:47:36,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:47:36,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:47:36,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:47:36,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:47:36,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:47:36,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:47:36,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:47:36,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:47:36,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:47:36,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:47:36,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:47:36,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:47:36,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:47:36,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:47:36,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:47:36,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:47:36,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:47:36,491 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 01:47:36,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:47:37,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:47:37,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:47:37,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:47:37,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:47:37,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-09-25 01:47:37,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b2a883f/374c91452a8a45aaa0fb402e3a7b40eb/FLAG45197943c [2020-09-25 01:47:37,730 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:47:37,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-09-25 01:47:37,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b2a883f/374c91452a8a45aaa0fb402e3a7b40eb/FLAG45197943c [2020-09-25 01:47:38,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b2a883f/374c91452a8a45aaa0fb402e3a7b40eb [2020-09-25 01:47:38,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:47:38,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:47:38,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:47:38,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:47:38,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:47:38,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,042 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 01:47:38, skipping insertion in model container [2020-09-25 01:47:38,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:47:38,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:47:38,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:47:38,624 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:47:38,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:47:38,782 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:47:38,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38 WrapperNode [2020-09-25 01:47:38,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:47:38,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:47:38,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:47:38,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:47:38,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (1/1) ... [2020-09-25 01:47:38,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:47:38,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:47:38,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:47:38,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:47:38,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (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 01:47:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:47:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:47:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:47:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:47:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:47:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:47:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:47:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:47:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:47:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:47:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:47:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:47:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:47:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:47:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-25 01:47:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-25 01:47:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:47:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:47:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:47:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:47:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:47:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:47:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:47:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:47:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:47:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:47:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:47:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:47:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:47:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:47:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:47:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:47:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:47:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:47:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:47:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:47:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:47:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:47:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:47:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:47:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:47:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:47:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:47:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-25 01:47:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:47:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:47:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:47:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:47:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:47:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:47:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:47:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:47:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:47:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:47:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:47:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:47:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:47:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:47:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:47:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:47:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:47:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:47:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:47:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:47:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:47:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:47:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:47:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:47:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:47:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:47:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:47:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:47:40,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:47:40,163 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:47:40,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:47:40 BoogieIcfgContainer [2020-09-25 01:47:40,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:47:40,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:47:40,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:47:40,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:47:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:47:38" (1/3) ... [2020-09-25 01:47:40,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19622766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:47:40, skipping insertion in model container [2020-09-25 01:47:40,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:47:38" (2/3) ... [2020-09-25 01:47:40,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19622766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:47:40, skipping insertion in model container [2020-09-25 01:47:40,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:47:40" (3/3) ... [2020-09-25 01:47:40,187 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2020-09-25 01:47:40,199 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:47:40,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:47:40,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:47:40,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:47:40,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:47:40,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:47:40,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:47:40,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:47:40,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:47:40,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:47:40,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:47:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-09-25 01:47:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 01:47:40,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:47:40,344 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] [2020-09-25 01:47:40,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:47:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:47:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1187069653, now seen corresponding path program 1 times [2020-09-25 01:47:40,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:47:40,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896938481] [2020-09-25 01:47:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:47:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:45,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:45,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 01:47:45,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:47:45,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 01:47:45,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 01:47:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:47:46,145 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:47:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:47:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:47:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 01:47:46,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:46,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:47:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:47:46,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:46,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:47:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:47:46,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:47:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:47:46,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:47:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:46,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:47:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:47:46,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:46,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:47:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:47:46,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:47:46,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:47:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 01:47:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:47:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:47:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:47:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 01:47:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:46,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:46,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:47:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:47:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:47:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:47:46,433 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 01:47:46,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896938481] [2020-09-25 01:47:46,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:47:46,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:47:46,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168252131] [2020-09-25 01:47:46,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:47:46,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:47:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:47:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:47:46,471 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 4 states. [2020-09-25 01:47:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:47:47,857 INFO L93 Difference]: Finished difference Result 480 states and 569 transitions. [2020-09-25 01:47:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:47:47,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 01:47:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:47:47,882 INFO L225 Difference]: With dead ends: 480 [2020-09-25 01:47:47,882 INFO L226 Difference]: Without dead ends: 306 [2020-09-25 01:47:47,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:47:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-25 01:47:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 259. [2020-09-25 01:47:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-25 01:47:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 282 transitions. [2020-09-25 01:47:48,008 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 282 transitions. Word has length 148 [2020-09-25 01:47:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:47:48,009 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 282 transitions. [2020-09-25 01:47:48,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:47:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 282 transitions. [2020-09-25 01:47:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 01:47:48,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:47:48,016 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] [2020-09-25 01:47:48,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:47:48,017 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:47:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:47:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash 988149189, now seen corresponding path program 1 times [2020-09-25 01:47:48,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:47:48,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387757709] [2020-09-25 01:47:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:47:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 01:47:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:47:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 01:47:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:47:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 01:47:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:47:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:47:53,392 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:47:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:47:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:47:53,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 01:47:53,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:47:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:47:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:47:53,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:53,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:47:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:47:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:47:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:47:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:47:53,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:47:53,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:53,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:47:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:47:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:47:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:47:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:47:53,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:47:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 01:47:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:47:53,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:53,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:47:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:47:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 01:47:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:53,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:47:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:47:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:47:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:47:53,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:47:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:47:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:47:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:47:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:47:53,647 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 01:47:53,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387757709] [2020-09-25 01:47:53,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:47:53,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:47:53,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830419888] [2020-09-25 01:47:53,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:47:53,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:47:53,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:47:53,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:47:53,652 INFO L87 Difference]: Start difference. First operand 259 states and 282 transitions. Second operand 5 states. [2020-09-25 01:47:54,346 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:47:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:47:55,425 INFO L93 Difference]: Finished difference Result 409 states and 464 transitions. [2020-09-25 01:47:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:47:55,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 01:47:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:47:55,431 INFO L225 Difference]: With dead ends: 409 [2020-09-25 01:47:55,431 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 01:47:55,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:47:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 01:47:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 249. [2020-09-25 01:47:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 01:47:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-25 01:47:55,477 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 149 [2020-09-25 01:47:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:47:55,477 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-25 01:47:55,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:47:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-25 01:47:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 01:47:55,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:47:55,481 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] [2020-09-25 01:47:55,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:47:55,481 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:47:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:47:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1661669589, now seen corresponding path program 1 times [2020-09-25 01:47:55,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:47:55,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060857725] [2020-09-25 01:47:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:47:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:47:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:47:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:00,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 01:48:00,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:48:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 01:48:00,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:48:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 01:48:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:48:00,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:00,904 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:01,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 01:48:01,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:01,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:01,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:01,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:01,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:01,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:01,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:01,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 01:48:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:01,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:01,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:48:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 01:48:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:01,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:01,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:01,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:48:01,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:48:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:01,239 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 01:48:01,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060857725] [2020-09-25 01:48:01,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:01,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:48:01,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012423588] [2020-09-25 01:48:01,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:48:01,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:01,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:48:01,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:48:01,243 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 9 states. [2020-09-25 01:48:01,852 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:48:03,145 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:48:03,482 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:48:03,823 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:48:04,146 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:48:04,464 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:48:05,188 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:48:05,495 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:48:05,833 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:48:06,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:48:06,646 INFO L93 Difference]: Finished difference Result 510 states and 600 transitions. [2020-09-25 01:48:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 01:48:06,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-09-25 01:48:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:48:06,651 INFO L225 Difference]: With dead ends: 510 [2020-09-25 01:48:06,651 INFO L226 Difference]: Without dead ends: 376 [2020-09-25 01:48:06,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 01:48:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-09-25 01:48:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 327. [2020-09-25 01:48:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-09-25 01:48:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 359 transitions. [2020-09-25 01:48:06,709 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 359 transitions. Word has length 158 [2020-09-25 01:48:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:48:06,710 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 359 transitions. [2020-09-25 01:48:06,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:48:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 359 transitions. [2020-09-25 01:48:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 01:48:06,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:06,714 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] [2020-09-25 01:48:06,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:48:06,714 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:06,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1065921251, now seen corresponding path program 1 times [2020-09-25 01:48:06,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:06,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015465129] [2020-09-25 01:48:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 01:48:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:48:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 01:48:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:48:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-09-25 01:48:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:48:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:12,126 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:12,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 01:48:12,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:12,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:48:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:12,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:12,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:48:12,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:12,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:12,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:12,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:12,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:48:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:48:12,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 01:48:12,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:48:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:48:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:48:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:48:12,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 01:48:12,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:48:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:48:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:48:12,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:48:12,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 01:48:12,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:48:12,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:48:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:48:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:48:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:48:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:12,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:48:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-25 01:48:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-25 01:48:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:12,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:12,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:12,849 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 01:48:12,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015465129] [2020-09-25 01:48:12,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:12,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:48:12,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917142325] [2020-09-25 01:48:12,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:48:12,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:12,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:48:12,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:48:12,853 INFO L87 Difference]: Start difference. First operand 327 states and 359 transitions. Second operand 10 states. [2020-09-25 01:48:14,533 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:48:14,829 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:48:15,162 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:48:15,493 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:48:15,814 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 01:48:16,113 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:48:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:48:16,860 INFO L93 Difference]: Finished difference Result 619 states and 727 transitions. [2020-09-25 01:48:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:48:16,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-09-25 01:48:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:48:16,866 INFO L225 Difference]: With dead ends: 619 [2020-09-25 01:48:16,866 INFO L226 Difference]: Without dead ends: 407 [2020-09-25 01:48:16,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:48:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-25 01:48:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 341. [2020-09-25 01:48:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-09-25 01:48:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 375 transitions. [2020-09-25 01:48:16,926 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 375 transitions. Word has length 196 [2020-09-25 01:48:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:48:16,926 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 375 transitions. [2020-09-25 01:48:16,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:48:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 375 transitions. [2020-09-25 01:48:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 01:48:16,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:16,930 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] [2020-09-25 01:48:16,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:48:16,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1191125635, now seen corresponding path program 1 times [2020-09-25 01:48:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590701977] [2020-09-25 01:48:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 01:48:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:48:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 01:48:22,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-25 01:48:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:48:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,331 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 01:48:22,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:22,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:22,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:22,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:22,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:48:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:48:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 01:48:22,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:48:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:48:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:48:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 01:48:22,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:48:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:48:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:48:22,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 01:48:22,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:48:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:48:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:48:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:48:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:48:22,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:48:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:48:22,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:48:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:22,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:48:22,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:48:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-25 01:48:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:22,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:48:22,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-25 01:48:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:22,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:22,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:22,835 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 01:48:22,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590701977] [2020-09-25 01:48:22,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:22,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:48:22,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711838647] [2020-09-25 01:48:22,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:48:22,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:48:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:48:22,838 INFO L87 Difference]: Start difference. First operand 341 states and 375 transitions. Second operand 9 states. [2020-09-25 01:48:24,105 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191