/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_spec3_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:41:04,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:41:04,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:41:04,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:41:04,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:41:04,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:41:04,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:41:04,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:41:04,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:41:04,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:41:04,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:41:04,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:41:04,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:41:04,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:41:04,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:41:04,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:41:04,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:41:04,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:41:04,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:41:04,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:41:04,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:41:04,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:41:04,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:41:04,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:41:04,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:41:04,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:41:04,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:41:04,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:41:04,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:41:04,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:41:04,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:41:04,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:41:04,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:41:04,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:41:04,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:41:04,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:41:04,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:41:04,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:41:04,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:41:04,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:41:04,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:41:04,100 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 08:41:04,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:41:04,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:41:04,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:41:04,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:41:04,144 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:41:04,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:41:04,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:41:04,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:41:04,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:41:04,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:41:04,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:41:04,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:41:04,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:41:04,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:41:04,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:41:04,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:41:04,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:41:04,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:41:04,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:41:04,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:41:04,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:41:04,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:41:04,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:41:04,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:41:04,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:41:04,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:41:04,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:41:04,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:41:04,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:41:04,152 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:41:04,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:41:04,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:41:04,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:41:04,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:41:04,686 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:41:04,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-09-25 08:41:04,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c8d8c58f/1a3770121b1c44c5933484c4cb72c79e/FLAG9f04abc65 [2020-09-25 08:41:05,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:41:05,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-09-25 08:41:05,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c8d8c58f/1a3770121b1c44c5933484c4cb72c79e/FLAG9f04abc65 [2020-09-25 08:41:05,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c8d8c58f/1a3770121b1c44c5933484c4cb72c79e [2020-09-25 08:41:05,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:41:05,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:41:05,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:05,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:41:05,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:41:05,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:05" (1/1) ... [2020-09-25 08:41:05,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e6ef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:05, skipping insertion in model container [2020-09-25 08:41:05,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:05" (1/1) ... [2020-09-25 08:41:05,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:41:05,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:41:06,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:06,255 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:41:06,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:06,384 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:41:06,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06 WrapperNode [2020-09-25 08:41:06,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:06,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:41:06,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:41:06,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:41:06,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (1/1) ... [2020-09-25 08:41:06,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:41:06,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:41:06,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:41:06,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:41:06,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (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 08:41:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:41:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:41:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:41:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:41:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:41:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-09-25 08:41:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:41:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:41:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:41:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:41:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:41:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 08:41:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 08:41:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:41:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:41:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:41:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:41:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:41:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:41:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:41:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:41:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:41:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:41:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:41:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:41:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:41:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:41:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:41:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:41:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:41:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:41:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:41:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:41:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 08:41:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 08:41:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:41:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:41:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:41:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:41:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:41:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:41:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:41:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:41:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:41:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:41:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:41:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:41:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:41:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:41:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:41:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:41:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:41:07,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:41:07,758 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:41:07,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:07 BoogieIcfgContainer [2020-09-25 08:41:07,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:41:07,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:41:07,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:41:07,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:41:07,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:41:05" (1/3) ... [2020-09-25 08:41:07,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2ac19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:07, skipping insertion in model container [2020-09-25 08:41:07,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:06" (2/3) ... [2020-09-25 08:41:07,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2ac19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:07, skipping insertion in model container [2020-09-25 08:41:07,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:07" (3/3) ... [2020-09-25 08:41:07,775 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c [2020-09-25 08:41:07,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:41:07,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:41:07,822 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:41:07,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:41:07,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:41:07,857 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:41:07,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:41:07,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:41:07,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:41:07,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:41:07,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:41:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2020-09-25 08:41:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 08:41:07,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:07,909 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] [2020-09-25 08:41:07,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:07,918 INFO L82 PathProgramCache]: Analyzing trace with hash 459580304, now seen corresponding path program 1 times [2020-09-25 08:41:07,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:07,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42303509] [2020-09-25 08:41:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:13,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 08:41:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-25 08:41:13,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:13,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 08:41:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:41:13,960 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:14,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 08:41:14,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:14,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:14,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:41:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:14,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:14,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:41:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:14,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:14,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:41:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:14,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:14,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:14,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:14,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:14,316 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 08:41:14,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42303509] [2020-09-25 08:41:14,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:14,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:41:14,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53513191] [2020-09-25 08:41:14,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:41:14,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:14,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:41:14,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:41:14,350 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2020-09-25 08:41:15,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:15,668 INFO L93 Difference]: Finished difference Result 394 states and 471 transitions. [2020-09-25 08:41:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:41:15,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 08:41:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:15,691 INFO L225 Difference]: With dead ends: 394 [2020-09-25 08:41:15,691 INFO L226 Difference]: Without dead ends: 254 [2020-09-25 08:41:15,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 08:41:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-25 08:41:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 214. [2020-09-25 08:41:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-25 08:41:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2020-09-25 08:41:15,819 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 153 [2020-09-25 08:41:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:15,822 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2020-09-25 08:41:15,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:41:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2020-09-25 08:41:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 08:41:15,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:15,836 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] [2020-09-25 08:41:15,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:41:15,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash 418244228, now seen corresponding path program 1 times [2020-09-25 08:41:15,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:15,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585313376] [2020-09-25 08:41:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,243 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:21,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 08:41:21,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:21,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:21,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:21,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:21,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:21,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:41:21,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 08:41:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:21,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:21,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 08:41:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:21,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 08:41:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:21,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:21,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:21,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:21,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:21,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:21,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:21,483 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 08:41:21,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585313376] [2020-09-25 08:41:21,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:21,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:41:21,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153593974] [2020-09-25 08:41:21,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:41:21,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:41:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:41:21,489 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand 4 states. [2020-09-25 08:41:22,130 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:41:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:22,802 INFO L93 Difference]: Finished difference Result 298 states and 332 transitions. [2020-09-25 08:41:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:41:22,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 08:41:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:22,806 INFO L225 Difference]: With dead ends: 298 [2020-09-25 08:41:22,807 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 08:41:22,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 08:41:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 08:41:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 204. [2020-09-25 08:41:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 08:41:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2020-09-25 08:41:22,868 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 154 [2020-09-25 08:41:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:22,869 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2020-09-25 08:41:22,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:41:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2020-09-25 08:41:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 08:41:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:22,871 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] [2020-09-25 08:41:22,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:41:22,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:22,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1459194471, now seen corresponding path program 1 times [2020-09-25 08:41:22,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:22,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171229992] [2020-09-25 08:41:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:25,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:25,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 08:41:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:41:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2971 [2020-09-25 08:41:25,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:25,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:41:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:41:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:41:26,253 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:26,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 08:41:26,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:26,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:26,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:41:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:41:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:41:26,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:26,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:41:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 08:41:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:26,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:26,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 08:41:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:26,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:26,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 08:41:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:26,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:26,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:26,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:26,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:26,503 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 08:41:26,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171229992] [2020-09-25 08:41:26,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:26,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:41:26,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640214130] [2020-09-25 08:41:26,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:41:26,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:26,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:41:26,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:41:26,508 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand 5 states. [2020-09-25 08:41:27,075 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:28,437 INFO L93 Difference]: Finished difference Result 454 states and 523 transitions. [2020-09-25 08:41:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:41:28,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 08:41:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:28,442 INFO L225 Difference]: With dead ends: 454 [2020-09-25 08:41:28,442 INFO L226 Difference]: Without dead ends: 360 [2020-09-25 08:41:28,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 08:41:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-09-25 08:41:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 282. [2020-09-25 08:41:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-25 08:41:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 305 transitions. [2020-09-25 08:41:28,493 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 305 transitions. Word has length 167 [2020-09-25 08:41:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:28,494 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 305 transitions. [2020-09-25 08:41:28,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:41:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 305 transitions. [2020-09-25 08:41:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 08:41:28,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:28,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:41:28,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:41:28,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:28,499 INFO L82 PathProgramCache]: Analyzing trace with hash -651029142, now seen corresponding path program 1 times [2020-09-25 08:41:28,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:28,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689214900] [2020-09-25 08:41:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 08:41:30,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-09-25 08:41:30,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:41:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 08:41:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 08:41:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:41:30,609 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:30,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:30,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 08:41:30,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:41:30,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:30,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:30,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:30,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:41:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:41:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:41:30,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:41:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:41:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:41:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 08:41:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:31,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 08:41:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:31,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:31,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:31,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:41:31,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:31,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:41:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:31,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:31,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 08:41:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:31,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:31,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:31,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:31,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:31,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:31,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:41:31,088 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 08:41:31,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689214900] [2020-09-25 08:41:31,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:31,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 08:41:31,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992770622] [2020-09-25 08:41:31,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:41:31,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:41:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:41:31,092 INFO L87 Difference]: Start difference. First operand 282 states and 305 transitions. Second operand 9 states. [2020-09-25 08:41:31,637 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:33,189 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:33,538 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:41:33,870 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:34,224 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:34,530 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:41:34,888 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:35,213 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:35,712 INFO L93 Difference]: Finished difference Result 688 states and 810 transitions. [2020-09-25 08:41:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:41:35,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-09-25 08:41:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:35,718 INFO L225 Difference]: With dead ends: 688 [2020-09-25 08:41:35,719 INFO L226 Difference]: Without dead ends: 516 [2020-09-25 08:41:35,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:41:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-09-25 08:41:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 437. [2020-09-25 08:41:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-25 08:41:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 487 transitions. [2020-09-25 08:41:35,783 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 487 transitions. Word has length 170 [2020-09-25 08:41:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:35,784 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 487 transitions. [2020-09-25 08:41:35,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:41:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 487 transitions. [2020-09-25 08:41:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 08:41:35,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:35,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:41:35,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:41:35,788 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash -720155991, now seen corresponding path program 1 times [2020-09-25 08:41:35,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:35,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859766691] [2020-09-25 08:41:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:40,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:40,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 08:41:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 08:41:40,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:40,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:41:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 08:41:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:41:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,160 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 08:41:41,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:41:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:41:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:41,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:41:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:41:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:41,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:41:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 08:41:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:41:41,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:41,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:41:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 08:41:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:41:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 08:41:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 08:41:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 08:41:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,613 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 08:41:41,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859766691] [2020-09-25 08:41:41,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:41,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:41:41,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283013940] [2020-09-25 08:41:41,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:41:41,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:41,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:41:41,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:41:41,617 INFO L87 Difference]: Start difference. First operand 437 states and 487 transitions. Second operand 6 states. [2020-09-25 08:41:42,135 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:43,089 INFO L93 Difference]: Finished difference Result 797 states and 929 transitions. [2020-09-25 08:41:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:41:43,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-09-25 08:41:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:43,096 INFO L225 Difference]: With dead ends: 797 [2020-09-25 08:41:43,096 INFO L226 Difference]: Without dead ends: 470 [2020-09-25 08:41:43,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:41:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-25 08:41:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 401. [2020-09-25 08:41:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-09-25 08:41:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 434 transitions. [2020-09-25 08:41:43,153 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 434 transitions. Word has length 175 [2020-09-25 08:41:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:43,154 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 434 transitions. [2020-09-25 08:41:43,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:41:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 434 transitions. [2020-09-25 08:41:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 08:41:43,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:43,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:41:43,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:41:43,157 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:43,158 INFO L82 PathProgramCache]: Analyzing trace with hash 232069563, now seen corresponding path program 1 times [2020-09-25 08:41:43,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:43,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610166712] [2020-09-25 08:41:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:41:43,216 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:41:43,217 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:41:43,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:41:43,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:41:43 BoogieIcfgContainer [2020-09-25 08:41:43,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:41:43,251 INFO L168 Benchmark]: Toolchain (without parser) took 37571.98 ms. Allocated memory was 139.5 MB in the beginning and 647.5 MB in the end (delta: 508.0 MB). Free memory was 101.6 MB in the beginning and 197.9 MB in the end (delta: -96.2 MB). Peak memory consumption was 411.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:43,252 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:41:43,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.64 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 174.6 MB in the end (delta: -73.5 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:43,254 INFO L168 Benchmark]: Boogie Preprocessor took 106.25 ms. Allocated memory is still 203.9 MB. Free memory was 174.6 MB in the beginning and 170.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:43,255 INFO L168 Benchmark]: RCFGBuilder took 1273.57 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 170.4 MB in the beginning and 182.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:43,255 INFO L168 Benchmark]: TraceAbstraction took 35482.36 ms. Allocated memory was 237.0 MB in the beginning and 647.5 MB in the end (delta: 410.5 MB). Free memory was 182.8 MB in the beginning and 197.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 395.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:43,259 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.64 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 174.6 MB in the end (delta: -73.5 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.25 ms. Allocated memory is still 203.9 MB. Free memory was 174.6 MB in the beginning and 170.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1273.57 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 170.4 MB in the beginning and 182.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35482.36 ms. Allocated memory was 237.0 MB in the beginning and 647.5 MB in the end (delta: 410.5 MB). Free memory was 182.8 MB in the beginning and 197.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 395.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 890]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L306] int waterLevel = 1; [L307] int methaneLevelCritical = 0; [L593] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L790] int cleanupTimeShifts = 4; [L863] int retValue_acc ; [L864] int tmp ; [L868] FCALL select_helpers() [L869] FCALL select_features() [L870] CALL, EXPR valid_product() [L415] int retValue_acc ; [L418] retValue_acc = 1 [L419] return (retValue_acc); [L870] RET, EXPR valid_product() [L870] tmp = valid_product() [L872] COND TRUE \read(tmp) [L874] FCALL setup() [L875] CALL runTest() [L857] CALL test() [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) [L106] CALL waterRise() [L324] COND TRUE waterLevel < 2 [L325] waterLevel = waterLevel + 1 [L106] RET waterRise() [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) [L126] CALL startSystem() [L301] systemActive = 1 [L126] RET startSystem() [L141] CALL timeShift() [L165] COND FALSE !(\read(pumpRunning)) [L172] COND TRUE \read(systemActive) [L174] FCALL processEnvironment() [L180] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L345] int retValue_acc ; [L348] retValue_acc = methaneLevelCritical [L349] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L377] int retValue_acc ; [L380] retValue_acc = waterLevel [L381] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L890] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 597 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 980 SDtfs, 1322 SDslu, 945 SDs, 0 SdLazy, 1873 SolverSat, 408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=437occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 299 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 994 NumberOfCodeBlocks, 994 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 814 ConstructedInterpolants, 0 QuantifiedInterpolants, 320750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...