/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:40:51,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:40:51,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:40:51,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:40:51,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:40:51,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:40:51,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:40:51,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:40:51,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:40:51,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:40:51,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:40:51,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:40:51,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:40:51,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:40:51,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:40:51,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:40:51,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:40:51,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:40:51,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:40:51,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:40:51,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:40:51,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:40:51,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:40:51,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:40:51,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:40:51,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:40:51,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:40:51,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:40:51,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:40:51,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:40:51,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:40:51,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:40:51,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:40:51,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:40:51,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:40:51,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:40:51,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:40:51,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:40:51,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:40:51,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:40:51,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:40:51,816 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 [2020-08-18 21:40:51,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:40:51,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:40:51,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:40:51,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:40:51,854 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:40:51,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:40:51,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:40:51,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:40:51,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:40:51,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:40:51,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:40:51,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:40:51,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:40:51,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:40:51,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:40:51,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:40:51,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:40:51,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:40:51,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:40:51,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:40:51,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:40:51,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:40:51,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:40:51,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:40:51,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:40:51,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:40:51,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:40:51,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:40:51,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:40:51,860 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:40:52,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:40:52,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:40:52,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:40:52,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:40:52,169 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:40:52,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-18 21:40:52,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da5fb3044/2d8612cf8c644ca8bf01472660fb9aff/FLAGeafbb6d29 [2020-08-18 21:40:52,790 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:40:52,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-18 21:40:52,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da5fb3044/2d8612cf8c644ca8bf01472660fb9aff/FLAGeafbb6d29 [2020-08-18 21:40:53,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da5fb3044/2d8612cf8c644ca8bf01472660fb9aff [2020-08-18 21:40:53,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:40:53,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:40:53,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:40:53,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:40:53,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:40:53,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe831a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53, skipping insertion in model container [2020-08-18 21:40:53,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:40:53,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:40:53,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:40:53,649 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:40:53,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:40:53,800 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:40:53,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53 WrapperNode [2020-08-18 21:40:53,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:40:53,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:40:53,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:40:53,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:40:53,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (1/1) ... [2020-08-18 21:40:53,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:40:53,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:40:53,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:40:53,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:40:53,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (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 [2020-08-18 21:40:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:40:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:40:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:40:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:40:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:40:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:40:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:40:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:40:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:40:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:40:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:40:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:40:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:40:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:40:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:40:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:40:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:40:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:40:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:40:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:40:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 21:40:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:40:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:40:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 21:40:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:40:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:40:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:40:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:40:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:40:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:40:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:40:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:40:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:40:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:40:54,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:40:54,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:40:54,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:40:54,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:40:54,011 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:40:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:40:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:40:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:40:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:40:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:40:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:40:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:40:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:40:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:40:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:40:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 21:40:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 21:40:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:40:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:40:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:40:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:40:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:40:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:40:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:40:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:40:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:40:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:40:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:40:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:40:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:40:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:40:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:40:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:40:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:40:54,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:40:54,993 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:40:54,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:40:54 BoogieIcfgContainer [2020-08-18 21:40:54,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:40:55,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:40:55,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:40:55,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:40:55,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:40:53" (1/3) ... [2020-08-18 21:40:55,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b727f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:40:55, skipping insertion in model container [2020-08-18 21:40:55,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:40:53" (2/3) ... [2020-08-18 21:40:55,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b727f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:40:55, skipping insertion in model container [2020-08-18 21:40:55,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:40:54" (3/3) ... [2020-08-18 21:40:55,007 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-18 21:40:55,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:40:55,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:40:55,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:40:55,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:40:55,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:40:55,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:40:55,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:40:55,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:40:55,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:40:55,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:40:55,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:40:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 21:40:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 21:40:55,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:40:55,095 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] [2020-08-18 21:40:55,095 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:40:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:40:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-18 21:40:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:40:55,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758511058] [2020-08-18 21:40:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:40:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,783 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:40:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:40:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:40:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:40:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:40:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:40:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:40:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:40:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:40:55,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758511058] [2020-08-18 21:40:55,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:40:55,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:40:55,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184579045] [2020-08-18 21:40:55,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:40:55,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:40:55,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:40:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:40:55,899 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-18 21:40:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:40:57,087 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-18 21:40:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:40:57,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 21:40:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:40:57,105 INFO L225 Difference]: With dead ends: 295 [2020-08-18 21:40:57,105 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 21:40:57,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:40:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 21:40:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-18 21:40:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 21:40:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 21:40:57,206 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-18 21:40:57,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:40:57,207 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 21:40:57,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:40:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 21:40:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 21:40:57,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:40:57,211 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] [2020-08-18 21:40:57,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:40:57,211 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:40:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:40:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-18 21:40:57,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:40:57,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312666508] [2020-08-18 21:40:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:40:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,608 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:40:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:40:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:40:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:40:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:40:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:40:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:40:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:40:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:40:57,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312666508] [2020-08-18 21:40:57,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:40:57,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:40:57,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058735471] [2020-08-18 21:40:57,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:40:57,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:40:57,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:40:57,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:40:57,699 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-18 21:40:58,127 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:40:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:40:58,989 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-18 21:40:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:40:58,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 21:40:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:40:58,995 INFO L225 Difference]: With dead ends: 219 [2020-08-18 21:40:58,995 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 21:40:58,998 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 [2020-08-18 21:40:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 21:40:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-18 21:40:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 21:40:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-18 21:40:59,038 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-18 21:40:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:40:59,039 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-18 21:40:59,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:40:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-18 21:40:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:40:59,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:40:59,041 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] [2020-08-18 21:40:59,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:40:59,042 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:40:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:40:59,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-18 21:40:59,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:40:59,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172115936] [2020-08-18 21:40:59,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:40:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,392 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:40:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:40:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:40:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:40:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:40:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:40:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:40:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:40:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:40:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:40:59,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172115936] [2020-08-18 21:40:59,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:40:59,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:40:59,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521258303] [2020-08-18 21:40:59,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:40:59,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:40:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:40:59,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:40:59,499 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-18 21:40:59,886 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:00,204 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:00,439 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:00,671 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:01,399 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:02,979 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-18 21:41:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:41:02,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 21:41:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:02,984 INFO L225 Difference]: With dead ends: 403 [2020-08-18 21:41:02,984 INFO L226 Difference]: Without dead ends: 310 [2020-08-18 21:41:02,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:41:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-18 21:41:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-18 21:41:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 21:41:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-18 21:41:03,055 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-18 21:41:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:03,055 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-18 21:41:03,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:41:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-18 21:41:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 21:41:03,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:03,058 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] [2020-08-18 21:41:03,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:41:03,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-18 21:41:03,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:03,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471509494] [2020-08-18 21:41:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,366 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:03,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:41:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:41:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:41:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:41:03,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471509494] [2020-08-18 21:41:03,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:03,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:41:03,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666329420] [2020-08-18 21:41:03,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:41:03,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:03,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:41:03,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:41:03,456 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-18 21:41:03,833 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:04,863 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:05,155 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:05,388 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:05,612 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:05,950 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:06,915 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-18 21:41:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:41:06,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 21:41:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:06,923 INFO L225 Difference]: With dead ends: 778 [2020-08-18 21:41:06,923 INFO L226 Difference]: Without dead ends: 562 [2020-08-18 21:41:06,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:41:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-18 21:41:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-18 21:41:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 21:41:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-18 21:41:07,042 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-18 21:41:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:07,043 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-18 21:41:07,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:41:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-18 21:41:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 21:41:07,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:07,046 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] [2020-08-18 21:41:07,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:41:07,047 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-18 21:41:07,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:07,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157996245] [2020-08-18 21:41:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,389 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:41:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:41:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:41:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 21:41:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:41:07,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157996245] [2020-08-18 21:41:07,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:07,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:41:07,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16904286] [2020-08-18 21:41:07,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:41:07,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:07,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:41:07,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:41:07,495 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-18 21:41:07,921 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:08,899 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:09,228 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:09,496 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:10,104 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:10,391 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:11,225 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-18 21:41:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:41:11,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 21:41:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:11,233 INFO L225 Difference]: With dead ends: 1224 [2020-08-18 21:41:11,234 INFO L226 Difference]: Without dead ends: 813 [2020-08-18 21:41:11,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:41:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-18 21:41:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-18 21:41:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-18 21:41:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-18 21:41:11,399 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-18 21:41:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:11,400 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-18 21:41:11,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:41:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-18 21:41:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:41:11,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:11,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:11,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:41:11,404 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-18 21:41:11,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:11,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646215195] [2020-08-18 21:41:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,692 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:41:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:41:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 21:41:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 21:41:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:41:11,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646215195] [2020-08-18 21:41:11,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:11,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:41:11,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352784483] [2020-08-18 21:41:11,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:41:11,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:11,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:41:11,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:41:11,852 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-18 21:41:12,398 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:13,310 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:13,579 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:41:13,864 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:14,132 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:41:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:15,965 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-18 21:41:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:41:15,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 21:41:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:15,984 INFO L225 Difference]: With dead ends: 2244 [2020-08-18 21:41:15,984 INFO L226 Difference]: Without dead ends: 1613 [2020-08-18 21:41:15,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:41:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-18 21:41:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-18 21:41:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-18 21:41:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-18 21:41:16,299 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-18 21:41:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:16,300 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-18 21:41:16,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:41:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-18 21:41:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:41:16,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:16,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:16,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:41:16,308 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:16,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-18 21:41:16,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:16,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664088874] [2020-08-18 21:41:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,559 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:41:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:41:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 21:41:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 21:41:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:41:16,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664088874] [2020-08-18 21:41:16,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:16,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:41:16,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594984408] [2020-08-18 21:41:16,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:41:16,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:16,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:41:16,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:41:16,760 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-18 21:41:17,938 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:18,236 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:41:18,484 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:18,728 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:19,979 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-18 21:41:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:41:19,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 21:41:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:19,995 INFO L225 Difference]: With dead ends: 2857 [2020-08-18 21:41:19,995 INFO L226 Difference]: Without dead ends: 1642 [2020-08-18 21:41:20,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:41:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-18 21:41:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-18 21:41:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-18 21:41:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-18 21:41:20,312 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-18 21:41:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:20,313 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-18 21:41:20,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:41:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-18 21:41:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:41:20,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:20,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:20,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:41:20,318 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-18 21:41:20,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:20,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432020210] [2020-08-18 21:41:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,695 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:41:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:41:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 21:41:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 21:41:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:41:20,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432020210] [2020-08-18 21:41:20,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:20,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:41:20,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146329804] [2020-08-18 21:41:20,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:41:20,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:41:20,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:41:20,900 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-18 21:41:21,660 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:21,892 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:22,114 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:22,763 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:23,023 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:23,260 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:24,375 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-18 21:41:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:41:24,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 21:41:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:24,385 INFO L225 Difference]: With dead ends: 2491 [2020-08-18 21:41:24,385 INFO L226 Difference]: Without dead ends: 1236 [2020-08-18 21:41:24,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:41:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-18 21:41:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-18 21:41:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-18 21:41:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-18 21:41:24,612 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-18 21:41:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:24,613 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-18 21:41:24,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:41:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-18 21:41:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 21:41:24,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:24,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:24,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:41:24,618 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-18 21:41:24,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:24,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725828957] [2020-08-18 21:41:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,916 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:41:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:41:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:41:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 21:41:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:41:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:41:25,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725828957] [2020-08-18 21:41:25,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:41:25,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:41:25,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601925700] [2020-08-18 21:41:25,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:41:25,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:25,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:41:25,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:41:25,183 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-18 21:41:25,804 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:26,111 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:41:26,356 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:41:26,592 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:41:27,205 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:27,792 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:28,191 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:29,192 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:29,487 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:29,855 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:30,107 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:30,620 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 21:41:31,127 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 21:41:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:32,406 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-18 21:41:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 21:41:32,407 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-18 21:41:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:32,415 INFO L225 Difference]: With dead ends: 2201 [2020-08-18 21:41:32,416 INFO L226 Difference]: Without dead ends: 1220 [2020-08-18 21:41:32,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 21:41:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-18 21:41:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-18 21:41:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-18 21:41:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-18 21:41:32,596 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-18 21:41:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:32,596 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-18 21:41:32,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:41:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-18 21:41:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 21:41:32,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:32,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:32,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:41:32,602 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:32,603 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-18 21:41:32,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:32,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314677355] [2020-08-18 21:41:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,876 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:41:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:41:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:41:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 21:41:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 21:41:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 21:41:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:33,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 21:41:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 21:41:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 21:41:33,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314677355] [2020-08-18 21:41:33,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:41:33,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 21:41:33,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172318843] [2020-08-18 21:41:33,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:41:33,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:33,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:41:33,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:41:33,042 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-18 21:41:33,999 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:35,559 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:36,319 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-18 21:41:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 21:41:36,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-18 21:41:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:36,333 INFO L225 Difference]: With dead ends: 2643 [2020-08-18 21:41:36,333 INFO L226 Difference]: Without dead ends: 1980 [2020-08-18 21:41:36,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:41:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-18 21:41:36,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-18 21:41:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-18 21:41:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-18 21:41:36,695 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-18 21:41:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:36,697 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-18 21:41:36,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:41:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-18 21:41:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 21:41:36,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:36,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:36,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:41:36,703 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-18 21:41:36,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:36,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453796510] [2020-08-18 21:41:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:41:36,803 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:41:36,803 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:41:36,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:41:36,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:41:36 BoogieIcfgContainer [2020-08-18 21:41:36,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:41:36,860 INFO L168 Benchmark]: Toolchain (without parser) took 43750.13 ms. Allocated memory was 141.6 MB in the beginning and 747.6 MB in the end (delta: 606.1 MB). Free memory was 103.4 MB in the beginning and 507.7 MB in the end (delta: -404.3 MB). Peak memory consumption was 201.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:41:36,860 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:41:36,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.74 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 169.0 MB in the end (delta: -65.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:41:36,862 INFO L168 Benchmark]: Boogie Preprocessor took 119.42 ms. Allocated memory is still 204.5 MB. Free memory was 169.0 MB in the beginning and 164.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:41:36,863 INFO L168 Benchmark]: RCFGBuilder took 1077.34 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 164.5 MB in the beginning and 189.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:41:36,864 INFO L168 Benchmark]: TraceAbstraction took 41853.52 ms. Allocated memory was 234.4 MB in the beginning and 747.6 MB in the end (delta: 513.3 MB). Free memory was 187.8 MB in the beginning and 507.7 MB in the end (delta: -319.9 MB). Peak memory consumption was 193.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:41:36,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.74 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 169.0 MB in the end (delta: -65.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.42 ms. Allocated memory is still 204.5 MB. Free memory was 169.0 MB in the beginning and 164.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1077.34 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 164.5 MB in the beginning and 189.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41853.52 ms. Allocated memory was 234.4 MB in the beginning and 747.6 MB in the end (delta: 513.3 MB). Free memory was 187.8 MB in the beginning and 507.7 MB in the end (delta: -319.9 MB). Peak memory consumption was 193.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8005 SolverSat, 2017 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...