/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:53:05,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:53:05,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:53:05,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:53:05,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:53:05,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:53:05,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:53:05,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:53:05,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:53:05,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:53:05,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:53:05,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:53:05,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:53:05,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:53:05,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:53:05,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:53:05,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:53:05,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:53:05,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:53:05,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:53:05,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:53:05,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:53:05,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:53:05,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:53:05,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:53:05,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:53:05,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:53:05,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:53:05,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:53:05,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:53:05,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:53:05,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:53:05,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:53:05,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:53:05,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:53:05,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:53:05,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:53:05,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:53:05,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:53:05,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:53:05,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:53:05,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:53:05,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:53:05,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:53:05,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:53:05,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:53:05,595 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:53:05,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:53:05,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:53:05,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:53:05,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:53:05,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:53:05,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:53:05,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:53:05,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:53:05,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:53:05,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:53:05,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:53:05,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:53:05,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:53:05,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:53:05,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:53:05,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:53:05,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:53:05,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:53:05,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:53:05,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:53:05,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:53:05,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:53:05,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:53:05,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:53:05,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:53:06,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:53:06,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:53:06,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:53:06,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:53:06,093 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:53:06,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c [2020-09-25 01:53:06,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2df811a7e/8c7b270354bf434383398e3fee4d109d/FLAG6fe175c18 [2020-09-25 01:53:06,759 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:53:06,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c [2020-09-25 01:53:06,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2df811a7e/8c7b270354bf434383398e3fee4d109d/FLAG6fe175c18 [2020-09-25 01:53:07,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2df811a7e/8c7b270354bf434383398e3fee4d109d [2020-09-25 01:53:07,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:53:07,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:53:07,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:07,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:53:07,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:53:07,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78ef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07, skipping insertion in model container [2020-09-25 01:53:07,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:53:07,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:53:07,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:53:07,640 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:53:07,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:53:07,868 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:53:07,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07 WrapperNode [2020-09-25 01:53:07,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:07,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:53:07,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:53:07,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:53:07,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... [2020-09-25 01:53:07,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:53:07,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:53:07,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:53:07,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:53:07,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:53:08,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:53:08,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:53:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:53:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:53:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:53:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:53:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:53:08,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:53:08,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:53:08,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:53:08,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:53:08,076 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:53:08,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:53:08,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:53:08,077 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:53:08,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:53:08,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:53:08,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:53:08,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:53:08,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:53:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:53:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:53:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:53:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:53:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:53:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:53:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:53:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:53:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:53:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:53:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:53:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:53:08,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:53:08,082 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:53:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:53:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:53:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:53:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:53:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:53:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:53:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:53:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:53:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:53:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:53:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:53:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:53:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:53:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:53:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:53:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:53:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:53:08,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:53:08,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:53:08,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:53:08,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:53:08,085 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:53:08,085 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:53:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:53:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:53:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:53:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:53:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:53:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:53:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:53:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:53:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:53:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:53:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:53:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:53:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:53:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:53:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:53:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:53:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:53:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:53:09,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:53:09,337 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:53:09,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:53:09 BoogieIcfgContainer [2020-09-25 01:53:09,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:53:09,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:53:09,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:53:09,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:53:09,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:53:07" (1/3) ... [2020-09-25 01:53:09,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ced56ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:53:09, skipping insertion in model container [2020-09-25 01:53:09,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:07" (2/3) ... [2020-09-25 01:53:09,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ced56ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:53:09, skipping insertion in model container [2020-09-25 01:53:09,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:53:09" (3/3) ... [2020-09-25 01:53:09,355 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product28.cil.c [2020-09-25 01:53:09,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:53:09,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:53:09,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:53:09,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:53:09,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:53:09,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:53:09,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:53:09,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:53:09,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:53:09,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:53:09,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:53:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-09-25 01:53:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:53:09,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:09,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:09,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:09,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2129634346, now seen corresponding path program 1 times [2020-09-25 01:53:09,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:09,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614735624] [2020-09-25 01:53:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:53:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:53:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 01:53:14,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:14,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:53:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:53:15,336 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:53:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:53:15,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 01:53:15,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:53:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:15,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:15,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:15,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:53:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:15,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:53:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:53:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:53:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:15,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:15,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:53:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:53:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:15,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:15,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:15,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:15,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:53:15,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614735624] [2020-09-25 01:53:15,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:53:15,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:53:15,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839671121] [2020-09-25 01:53:15,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:53:15,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:53:15,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:53:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:53:15,664 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2020-09-25 01:53:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:53:16,963 INFO L93 Difference]: Finished difference Result 436 states and 522 transitions. [2020-09-25 01:53:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:53:16,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:53:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:53:16,989 INFO L225 Difference]: With dead ends: 436 [2020-09-25 01:53:16,989 INFO L226 Difference]: Without dead ends: 276 [2020-09-25 01:53:16,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:53:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-25 01:53:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2020-09-25 01:53:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 01:53:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 253 transitions. [2020-09-25 01:53:17,151 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 253 transitions. Word has length 142 [2020-09-25 01:53:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:53:17,153 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 253 transitions. [2020-09-25 01:53:17,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:53:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 253 transitions. [2020-09-25 01:53:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:53:17,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:17,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:17,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:53:17,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:17,171 INFO L82 PathProgramCache]: Analyzing trace with hash -386314513, now seen corresponding path program 1 times [2020-09-25 01:53:17,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:17,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479366437] [2020-09-25 01:53:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:53:22,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:53:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 01:53:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:53:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:53:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:53:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:22,608 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:53:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:53:22,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 01:53:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:53:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:53:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:53:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:53:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:53:22,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:53:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:22,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:53:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:53:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:53:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:22,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:22,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:22,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:22,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:22,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:53:22,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479366437] [2020-09-25 01:53:22,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:53:22,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:53:22,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241753187] [2020-09-25 01:53:22,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:53:22,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:53:22,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:53:22,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:53:22,858 INFO L87 Difference]: Start difference. First operand 234 states and 253 transitions. Second operand 4 states. [2020-09-25 01:53:23,454 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:53:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:53:24,265 INFO L93 Difference]: Finished difference Result 343 states and 385 transitions. [2020-09-25 01:53:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:53:24,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:53:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:53:24,270 INFO L225 Difference]: With dead ends: 343 [2020-09-25 01:53:24,270 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 01:53:24,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:53:24,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 01:53:24,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 224. [2020-09-25 01:53:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 01:53:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 240 transitions. [2020-09-25 01:53:24,348 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 240 transitions. Word has length 143 [2020-09-25 01:53:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:53:24,348 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 240 transitions. [2020-09-25 01:53:24,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:53:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 240 transitions. [2020-09-25 01:53:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:53:24,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:24,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:24,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:53:24,351 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash 70497391, now seen corresponding path program 1 times [2020-09-25 01:53:24,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:24,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163864208] [2020-09-25 01:53:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:29,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:53:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:53:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-25 01:53:29,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:53:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:53:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:53:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:29,840 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:53:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:53:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 01:53:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:53:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:30,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:30,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:30,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:53:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:30,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:30,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:53:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:30,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:53:30,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:53:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:30,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:53:30,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:30,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:53:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:53:30,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:53:30,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:53:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:53:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:53:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:30,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:30,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:30,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:30,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:30,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:53:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:30,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:30,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:30,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:53:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 01:53:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:53:30,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163864208] [2020-09-25 01:53:30,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:53:30,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:53:30,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031869702] [2020-09-25 01:53:30,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:53:30,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:53:30,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:53:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:53:30,140 INFO L87 Difference]: Start difference. First operand 224 states and 240 transitions. Second operand 5 states. [2020-09-25 01:53:30,607 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:53:32,216 INFO L93 Difference]: Finished difference Result 518 states and 601 transitions. [2020-09-25 01:53:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:53:32,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:53:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:53:32,222 INFO L225 Difference]: With dead ends: 518 [2020-09-25 01:53:32,222 INFO L226 Difference]: Without dead ends: 404 [2020-09-25 01:53:32,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:53:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-09-25 01:53:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 328. [2020-09-25 01:53:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-09-25 01:53:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 361 transitions. [2020-09-25 01:53:32,292 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 361 transitions. Word has length 156 [2020-09-25 01:53:32,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:53:32,292 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 361 transitions. [2020-09-25 01:53:32,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:53:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 361 transitions. [2020-09-25 01:53:32,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:53:32,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:32,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:32,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:53:32,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:32,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:32,296 INFO L82 PathProgramCache]: Analyzing trace with hash 549756770, now seen corresponding path program 1 times [2020-09-25 01:53:32,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:32,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875820136] [2020-09-25 01:53:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:53:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:53:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 01:53:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:53:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 01:53:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:53:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:37,820 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:53:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:37,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:53:37,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 01:53:37,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:38,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:53:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:38,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:38,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:53:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:38,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:53:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:53:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:38,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:53:38,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:53:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:38,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:38,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:38,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:53:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:53:38,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:38,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:38,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:53:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:38,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:53:38,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:53:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:53:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:53:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:38,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:53:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:53:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:53:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:53:38,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875820136] [2020-09-25 01:53:38,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:53:38,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:53:38,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74085982] [2020-09-25 01:53:38,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:53:38,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:53:38,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:53:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:53:38,192 INFO L87 Difference]: Start difference. First operand 328 states and 361 transitions. Second operand 9 states. [2020-09-25 01:53:38,884 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:40,081 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:53:40,463 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:53:40,782 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:41,134 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:53:41,450 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:53:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:53:41,704 INFO L93 Difference]: Finished difference Result 527 states and 614 transitions. [2020-09-25 01:53:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:53:41,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-25 01:53:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:53:41,705 INFO L225 Difference]: With dead ends: 527 [2020-09-25 01:53:41,706 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:53:41,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:53:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:53:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:53:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:53:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:53:41,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2020-09-25 01:53:41,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:53:41,713 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:53:41,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:53:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:53:41,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:53:41,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:53:41,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:53:41,929 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:42,095 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:42,261 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:42,391 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:53:42,565 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:42,742 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:42,902 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:43,053 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:43,208 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:43,327 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:53:43,490 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:43,600 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:53:43,762 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:44,082 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:53:44,413 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:53:44,735 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:53:44,880 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:45,030 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:45,182 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:45,333 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:45,485 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:45,633 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:45,778 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:45,928 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:46,082 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:46,226 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:46,377 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:46,521 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:46,670 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:46,819 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:46,970 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:47,235 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 6 [2020-09-25 01:53:47,384 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:47,528 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:47,679 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:47,832 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:47,976 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:48,124 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:48,457 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:53:48,773 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:53:49,086 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:53:49,394 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-25 01:53:49,643 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:49,791 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:49,942 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:50,092 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:50,246 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:50,395 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:50,540 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:50,690 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:50,840 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:51,103 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:51,246 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:53:51,395 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:51,543 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:51,691 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:53:52,005 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:53:52,321 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:53:52,633 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:53:52,947 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-25 01:53:53,334 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-25 01:53:53,509 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:53:53,692 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:53:53,903 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:53:54,174 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:53:54,397 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:53:54,601 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 8 [2020-09-25 01:53:54,859 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:55,063 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:53:55,368 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 11