/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:53:58,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:53:58,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:53:58,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:53:58,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:53:58,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:53:58,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:53:58,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:53:58,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:53:58,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:53:58,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:53:58,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:53:58,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:53:58,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:53:58,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:53:58,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:53:58,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:53:58,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:53:58,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:53:58,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:53:58,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:53:58,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:53:58,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:53:58,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:53:58,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:53:58,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:53:58,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:53:58,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:53:58,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:53:58,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:53:58,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:53:58,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:53:58,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:53:58,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:53:58,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:53:58,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:53:58,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:53:58,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:53:58,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:53:58,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:53:58,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:53:58,386 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 01:53:58,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:53:58,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:53:58,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:53:58,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:53:58,415 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:53:58,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:53:58,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:53:58,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:53:58,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:53:58,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:53:58,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:53:58,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:53:58,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:53:58,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:53:58,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:53:58,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:53:58,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:53:58,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:53:58,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:53:58,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:53:58,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:53:58,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:53:58,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:53:58,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:53:58,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:53:58,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:53:58,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:53:58,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:53:58,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:53:58,421 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 01:53:58,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:53:58,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:53:58,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:53:58,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:53:58,925 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:53:58,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-09-25 01:53:59,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45ef3f50e/f25b3a2f4fe845dc994619002c18c19b/FLAG6ad6a63ec [2020-09-25 01:53:59,598 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:53:59,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-09-25 01:53:59,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45ef3f50e/f25b3a2f4fe845dc994619002c18c19b/FLAG6ad6a63ec [2020-09-25 01:53:59,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45ef3f50e/f25b3a2f4fe845dc994619002c18c19b [2020-09-25 01:53:59,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:53:59,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:53:59,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:59,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:53:59,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:53:59,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:59" (1/1) ... [2020-09-25 01:53:59,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:59, skipping insertion in model container [2020-09-25 01:53:59,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:59" (1/1) ... [2020-09-25 01:53:59,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:53:59,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:54:00,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:00,375 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:54:00,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:00,672 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:54:00,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00 WrapperNode [2020-09-25 01:54:00,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:00,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:54:00,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:54:00,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:54:00,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... [2020-09-25 01:54:00,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:54:00,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:54:00,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:54:00,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:54:00,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:54:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:54:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:54:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:54:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:54:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:54:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:54:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:54:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:54:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:54:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:54:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:54:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:54:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:54:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:54:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:54:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:54:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:54:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:54:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:54:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:54:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:54:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:54:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:54:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:54:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:54:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:54:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:54:00,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:54:00,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:54:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:54:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:54:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:54:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:54:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:54:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:54:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:54:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:54:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:54:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:54:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:54:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:54:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:54:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:54:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:54:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:54:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:54:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:54:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:54:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:54:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:54:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:54:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:54:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:54:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:54:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:54:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:54:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:54:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:54:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:54:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:54:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:54:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:54:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:54:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:54:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:54:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:54:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:54:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:54:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:54:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:54:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:54:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:54:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:54:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:54:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:54:02,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:54:02,012 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:54:02,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:02 BoogieIcfgContainer [2020-09-25 01:54:02,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:54:02,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:54:02,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:54:02,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:54:02,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:53:59" (1/3) ... [2020-09-25 01:54:02,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3436570e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:02, skipping insertion in model container [2020-09-25 01:54:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:00" (2/3) ... [2020-09-25 01:54:02,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3436570e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:02, skipping insertion in model container [2020-09-25 01:54:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:02" (3/3) ... [2020-09-25 01:54:02,031 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-09-25 01:54:02,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:54:02,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:54:02,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:54:02,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:54:02,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:54:02,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:54:02,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:54:02,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:54:02,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:54:02,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:54:02,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:54:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-09-25 01:54:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:54:02,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:02,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:02,163 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:02,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:02,170 INFO L82 PathProgramCache]: Analyzing trace with hash 944307102, now seen corresponding path program 1 times [2020-09-25 01:54:02,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:02,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798391833] [2020-09-25 01:54:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:07,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:07,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:54:07,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:07,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 01:54:07,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:54:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:54:08,121 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:08,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 01:54:08,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:08,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:08,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:08,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:08,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:08,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:54:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:08,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:08,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:08,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:08,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:08,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798391833] [2020-09-25 01:54:08,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:08,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:54:08,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211808591] [2020-09-25 01:54:08,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:54:08,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:08,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:54:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:08,548 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2020-09-25 01:54:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:10,061 INFO L93 Difference]: Finished difference Result 494 states and 582 transitions. [2020-09-25 01:54:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:54:10,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:54:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:10,089 INFO L225 Difference]: With dead ends: 494 [2020-09-25 01:54:10,090 INFO L226 Difference]: Without dead ends: 306 [2020-09-25 01:54:10,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-25 01:54:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 262. [2020-09-25 01:54:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-25 01:54:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 282 transitions. [2020-09-25 01:54:10,290 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 282 transitions. Word has length 142 [2020-09-25 01:54:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:10,292 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 282 transitions. [2020-09-25 01:54:10,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:54:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 282 transitions. [2020-09-25 01:54:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:54:10,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:10,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:10,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:54:10,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash 990794439, now seen corresponding path program 1 times [2020-09-25 01:54:10,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:10,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414431786] [2020-09-25 01:54:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:54:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 01:54:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:54:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,757 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 01:54:15,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:15,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:15,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:15,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:15,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:15,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:15,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:15,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:15,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:54:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:15,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:15,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:15,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:16,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414431786] [2020-09-25 01:54:16,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:16,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:54:16,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727622914] [2020-09-25 01:54:16,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:54:16,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:16,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:54:16,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:54:16,009 INFO L87 Difference]: Start difference. First operand 262 states and 282 transitions. Second operand 4 states. [2020-09-25 01:54:16,734 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:17,723 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2020-09-25 01:54:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:54:17,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:54:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:17,728 INFO L225 Difference]: With dead ends: 398 [2020-09-25 01:54:17,728 INFO L226 Difference]: Without dead ends: 289 [2020-09-25 01:54:17,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-25 01:54:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2020-09-25 01:54:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 01:54:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-09-25 01:54:17,774 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 143 [2020-09-25 01:54:17,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:17,775 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-09-25 01:54:17,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:54:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-09-25 01:54:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:54:17,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:17,778 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] [2020-09-25 01:54:17,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:54:17,778 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:17,779 INFO L82 PathProgramCache]: Analyzing trace with hash -844663911, now seen corresponding path program 1 times [2020-09-25 01:54:17,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:17,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509960891] [2020-09-25 01:54:17,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:20,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:54:22,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:54:22,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:54:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:22,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:23,165 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:23,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 01:54:23,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:23,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:23,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:23,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:23,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:23,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:23,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:23,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:54:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:54:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:23,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:23,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:54:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:23,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509960891] [2020-09-25 01:54:23,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:23,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:54:23,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25975617] [2020-09-25 01:54:23,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:54:23,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:54:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:23,451 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 5 states. [2020-09-25 01:54:24,192 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:26,002 INFO L93 Difference]: Finished difference Result 606 states and 692 transitions. [2020-09-25 01:54:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:54:26,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:54:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:26,007 INFO L225 Difference]: With dead ends: 606 [2020-09-25 01:54:26,008 INFO L226 Difference]: Without dead ends: 464 [2020-09-25 01:54:26,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:54:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-25 01:54:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 378. [2020-09-25 01:54:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-09-25 01:54:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 411 transitions. [2020-09-25 01:54:26,080 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 411 transitions. Word has length 156 [2020-09-25 01:54:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:26,081 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 411 transitions. [2020-09-25 01:54:26,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:54:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 411 transitions. [2020-09-25 01:54:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:54:26,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:26,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:26,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:54:26,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1137144832, now seen corresponding path program 1 times [2020-09-25 01:54:26,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:26,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997891130] [2020-09-25 01:54:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:26,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:54:31,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 01:54:31,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 01:54:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:54:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,523 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 01:54:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:54:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:54:31,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:54:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:54:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:54:31,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:31,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997891130] [2020-09-25 01:54:31,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:31,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:54:31,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039922378] [2020-09-25 01:54:31,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:54:31,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:31,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:54:31,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:54:31,883 INFO L87 Difference]: Start difference. First operand 378 states and 411 transitions. Second operand 9 states. [2020-09-25 01:54:32,391 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:33,685 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:34,020 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:34,368 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:34,706 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:54:35,045 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:35,844 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:36,154 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:36,497 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:37,205 INFO L93 Difference]: Finished difference Result 881 states and 1028 transitions. [2020-09-25 01:54:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 01:54:37,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-25 01:54:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:37,212 INFO L225 Difference]: With dead ends: 881 [2020-09-25 01:54:37,212 INFO L226 Difference]: Without dead ends: 613 [2020-09-25 01:54:37,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 01:54:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-09-25 01:54:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 544. [2020-09-25 01:54:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 01:54:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 610 transitions. [2020-09-25 01:54:37,319 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 610 transitions. Word has length 161 [2020-09-25 01:54:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:37,320 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 610 transitions. [2020-09-25 01:54:37,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:54:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 610 transitions. [2020-09-25 01:54:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 01:54:37,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:37,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:37,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:54:37,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:37,325 INFO L82 PathProgramCache]: Analyzing trace with hash -87431938, now seen corresponding path program 1 times [2020-09-25 01:54:37,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:37,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203935773] [2020-09-25 01:54:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-25 01:54:42,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:54:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 01:54:42,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-25 01:54:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,719 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:42,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:42,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:42,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:42,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:42,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 01:54:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 01:54:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:54:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:42,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:54:43,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 01:54:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:54:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:54:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:54:43,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:54:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:54:43,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:54:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:54:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:54:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:54:43,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:43,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:54:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:43,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:54:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:43,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:43,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-09-25 01:54:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:43,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-25 01:54:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:43,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:43,239 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 01:54:43,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203935773] [2020-09-25 01:54:43,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:43,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:54:43,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132146433] [2020-09-25 01:54:43,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:54:43,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:43,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:54:43,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:54:43,242 INFO L87 Difference]: Start difference. First operand 544 states and 610 transitions. Second operand 10 states. [2020-09-25 01:54:44,725 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:45,058 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:45,411 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:54:45,770 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:46,181 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:46,496 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:47,644 INFO L93 Difference]: Finished difference Result 1151 states and 1394 transitions. [2020-09-25 01:54:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:54:47,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 211 [2020-09-25 01:54:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:47,649 INFO L225 Difference]: With dead ends: 1151 [2020-09-25 01:54:47,650 INFO L226 Difference]: Without dead ends: 717 [2020-09-25 01:54:47,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:54:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-09-25 01:54:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 563. [2020-09-25 01:54:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-09-25 01:54:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 629 transitions. [2020-09-25 01:54:47,729 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 629 transitions. Word has length 211 [2020-09-25 01:54:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:47,730 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 629 transitions. [2020-09-25 01:54:47,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:54:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 629 transitions. [2020-09-25 01:54:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 01:54:47,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:47,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:47,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:54:47,735 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:47,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1842102114, now seen corresponding path program 1 times [2020-09-25 01:54:47,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:47,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064198271] [2020-09-25 01:54:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking...