/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:58:41,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:58:41,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:58:41,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:58:41,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:58:41,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:58:41,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:58:41,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:58:41,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:58:41,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:58:41,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:58:41,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:58:41,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:58:41,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:58:41,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:58:41,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:58:41,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:58:41,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:58:41,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:58:41,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:58:41,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:58:41,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:58:41,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:58:41,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:58:41,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:58:41,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:58:41,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:58:41,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:58:41,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:58:41,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:58:41,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:58:41,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:58:41,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:58:41,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:58:41,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:58:41,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:58:41,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:58:41,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:58:41,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:58:41,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:58:41,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:58:41,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:58:41,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:58:41,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:58:41,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:58:41,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:58:41,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:58:41,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:58:41,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:58:41,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:58:41,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:58:41,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:58:41,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:58:41,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:58:41,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:58:41,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:58:41,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:58:41,755 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:58:41,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:58:41,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:58:41,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:58:41,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:58:41,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:58:41,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:58:41,757 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:58:42,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:58:42,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:58:42,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:58:42,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:58:42,063 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:58:42,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-08-22 17:58:42,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ec3e564/00a1fc9956ce42d0ada25318e6a917fb/FLAG5f73a6ae5 [2020-08-22 17:58:42,680 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:58:42,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-08-22 17:58:42,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ec3e564/00a1fc9956ce42d0ada25318e6a917fb/FLAG5f73a6ae5 [2020-08-22 17:58:42,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ec3e564/00a1fc9956ce42d0ada25318e6a917fb [2020-08-22 17:58:43,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:58:43,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:58:43,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:58:43,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:58:43,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:58:43,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:58:42" (1/1) ... [2020-08-22 17:58:43,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621e24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43, skipping insertion in model container [2020-08-22 17:58:43,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:58:42" (1/1) ... [2020-08-22 17:58:43,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:58:43,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:58:43,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:58:43,536 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:58:43,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:58:43,650 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:58:43,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43 WrapperNode [2020-08-22 17:58:43,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:58:43,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:58:43,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:58:43,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:58:43,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... [2020-08-22 17:58:43,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:58:43,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:58:43,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:58:43,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:58:43,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 17:58:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:58:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:58:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:58:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:58:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:58:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:58:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:58:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:58:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:58:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:58:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:58:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:58:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:58:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:58:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:58:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:58:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:58:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:58:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:58:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:58:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:58:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:58:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:58:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:58:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:58:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:58:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:58:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:58:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:58:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:58:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:58:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:58:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:58:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:58:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:58:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:58:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:58:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:58:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:58:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:58:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:58:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:58:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:58:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:58:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:58:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:58:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:58:45,203 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:58:45,204 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:58:45,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:58:45 BoogieIcfgContainer [2020-08-22 17:58:45,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:58:45,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:58:45,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:58:45,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:58:45,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:58:42" (1/3) ... [2020-08-22 17:58:45,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54aafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:58:45, skipping insertion in model container [2020-08-22 17:58:45,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:43" (2/3) ... [2020-08-22 17:58:45,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54aafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:58:45, skipping insertion in model container [2020-08-22 17:58:45,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:58:45" (3/3) ... [2020-08-22 17:58:45,220 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2020-08-22 17:58:45,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:58:45,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:58:45,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:58:45,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:58:45,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:58:45,273 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:58:45,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:58:45,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:58:45,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:58:45,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:58:45,273 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:58:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2020-08-22 17:58:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 17:58:45,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:45,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:45,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:45,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash -636857616, now seen corresponding path program 1 times [2020-08-22 17:58:45,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:45,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551311464] [2020-08-22 17:58:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:45,386 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,019 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:58:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:58:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:46,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551311464] [2020-08-22 17:58:46,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:46,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:58:46,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222542930] [2020-08-22 17:58:46,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:58:46,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:46,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:58:46,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:58:46,292 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2020-08-22 17:58:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:58:47,489 INFO L93 Difference]: Finished difference Result 432 states and 512 transitions. [2020-08-22 17:58:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 17:58:47,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-22 17:58:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:58:47,508 INFO L225 Difference]: With dead ends: 432 [2020-08-22 17:58:47,508 INFO L226 Difference]: Without dead ends: 281 [2020-08-22 17:58:47,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:58:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-22 17:58:47,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 236. [2020-08-22 17:58:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-22 17:58:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 255 transitions. [2020-08-22 17:58:47,666 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 255 transitions. Word has length 148 [2020-08-22 17:58:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:58:47,670 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 255 transitions. [2020-08-22 17:58:47,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:58:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 255 transitions. [2020-08-22 17:58:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 17:58:47,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:47,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:47,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:58:47,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash -394037270, now seen corresponding path program 1 times [2020-08-22 17:58:47,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:47,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166595422] [2020-08-22 17:58:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:47,689 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,075 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 17:58:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:58:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:48,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166595422] [2020-08-22 17:58:48,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:48,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:58:48,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883806210] [2020-08-22 17:58:48,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:58:48,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:48,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:58:48,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:58:48,214 INFO L87 Difference]: Start difference. First operand 236 states and 255 transitions. Second operand 5 states. [2020-08-22 17:58:48,955 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:58:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:58:49,755 INFO L93 Difference]: Finished difference Result 361 states and 407 transitions. [2020-08-22 17:58:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 17:58:49,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-08-22 17:58:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:58:49,760 INFO L225 Difference]: With dead ends: 361 [2020-08-22 17:58:49,760 INFO L226 Difference]: Without dead ends: 270 [2020-08-22 17:58:49,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:58:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-22 17:58:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 226. [2020-08-22 17:58:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-22 17:58:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 242 transitions. [2020-08-22 17:58:49,832 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 242 transitions. Word has length 149 [2020-08-22 17:58:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:58:49,832 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 242 transitions. [2020-08-22 17:58:49,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 17:58:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 242 transitions. [2020-08-22 17:58:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-22 17:58:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:49,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:49,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:58:49,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1798175291, now seen corresponding path program 1 times [2020-08-22 17:58:49,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:49,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221829834] [2020-08-22 17:58:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:49,839 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,262 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:58:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:58:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:50,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221829834] [2020-08-22 17:58:50,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:50,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:58:50,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284180873] [2020-08-22 17:58:50,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:58:50,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:50,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:58:50,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:58:50,476 INFO L87 Difference]: Start difference. First operand 226 states and 242 transitions. Second operand 10 states. [2020-08-22 17:58:51,195 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:58:51,631 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:58:51,871 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:58:52,128 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:58:52,407 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:58:52,647 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:58:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:58:53,900 INFO L93 Difference]: Finished difference Result 381 states and 433 transitions. [2020-08-22 17:58:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:58:53,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-22 17:58:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:58:53,904 INFO L225 Difference]: With dead ends: 381 [2020-08-22 17:58:53,904 INFO L226 Difference]: Without dead ends: 270 [2020-08-22 17:58:53,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 17:58:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-22 17:58:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 226. [2020-08-22 17:58:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-22 17:58:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 241 transitions. [2020-08-22 17:58:53,974 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 241 transitions. Word has length 158 [2020-08-22 17:58:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:58:53,975 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 241 transitions. [2020-08-22 17:58:53,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:58:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 241 transitions. [2020-08-22 17:58:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 17:58:53,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:53,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:53,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:58:53,978 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:53,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1932582056, now seen corresponding path program 1 times [2020-08-22 17:58:53,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:53,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865615480] [2020-08-22 17:58:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:53,982 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,246 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:58:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:58:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:58:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:58:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:54,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865615480] [2020-08-22 17:58:54,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:54,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:58:54,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356076512] [2020-08-22 17:58:54,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:58:54,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:54,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:58:54,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:58:54,373 INFO L87 Difference]: Start difference. First operand 226 states and 241 transitions. Second operand 7 states. [2020-08-22 17:58:55,067 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:58:56,554 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:58:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:58:57,048 INFO L93 Difference]: Finished difference Result 511 states and 588 transitions. [2020-08-22 17:58:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 17:58:57,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-08-22 17:58:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:58:57,054 INFO L225 Difference]: With dead ends: 511 [2020-08-22 17:58:57,054 INFO L226 Difference]: Without dead ends: 400 [2020-08-22 17:58:57,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:58:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-08-22 17:58:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 329. [2020-08-22 17:58:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-22 17:58:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 356 transitions. [2020-08-22 17:58:57,170 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 356 transitions. Word has length 166 [2020-08-22 17:58:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:58:57,171 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 356 transitions. [2020-08-22 17:58:57,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:58:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 356 transitions. [2020-08-22 17:58:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-08-22 17:58:57,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:57,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:57,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:58:57,175 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:57,175 INFO L82 PathProgramCache]: Analyzing trace with hash 171472501, now seen corresponding path program 1 times [2020-08-22 17:58:57,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:57,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281004834] [2020-08-22 17:58:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:57,178 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,450 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:58:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:58:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:58:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:58:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:58:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:58:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:57,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281004834] [2020-08-22 17:58:57,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:57,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:58:57,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563472976] [2020-08-22 17:58:57,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:58:57,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:57,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:58:57,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:58:57,694 INFO L87 Difference]: Start difference. First operand 329 states and 356 transitions. Second operand 10 states. [2020-08-22 17:58:58,217 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:58:59,631 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:58:59,864 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:00,127 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:00,364 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:00,607 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:00,844 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:01,095 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:01,462 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:02,340 INFO L93 Difference]: Finished difference Result 821 states and 962 transitions. [2020-08-22 17:59:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 17:59:02,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-08-22 17:59:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:02,346 INFO L225 Difference]: With dead ends: 821 [2020-08-22 17:59:02,347 INFO L226 Difference]: Without dead ends: 607 [2020-08-22 17:59:02,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 17:59:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-08-22 17:59:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 497. [2020-08-22 17:59:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-08-22 17:59:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 543 transitions. [2020-08-22 17:59:02,505 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 543 transitions. Word has length 190 [2020-08-22 17:59:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:02,506 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 543 transitions. [2020-08-22 17:59:02,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:59:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 543 transitions. [2020-08-22 17:59:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-22 17:59:02,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:02,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:02,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:59:02,509 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash 320544540, now seen corresponding path program 1 times [2020-08-22 17:59:02,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:02,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544418126] [2020-08-22 17:59:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:02,513 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,843 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:59:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-22 17:59:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:59:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:03,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544418126] [2020-08-22 17:59:03,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:03,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:03,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128442276] [2020-08-22 17:59:03,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:03,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:03,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:03,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:03,006 INFO L87 Difference]: Start difference. First operand 497 states and 543 transitions. Second operand 11 states. [2020-08-22 17:59:03,520 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:04,945 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:05,172 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:05,413 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:05,643 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:05,936 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:06,212 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:06,464 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:06,722 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:07,595 INFO L93 Difference]: Finished difference Result 1050 states and 1217 transitions. [2020-08-22 17:59:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 17:59:07,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 195 [2020-08-22 17:59:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:07,604 INFO L225 Difference]: With dead ends: 1050 [2020-08-22 17:59:07,604 INFO L226 Difference]: Without dead ends: 668 [2020-08-22 17:59:07,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2020-08-22 17:59:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-08-22 17:59:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 495. [2020-08-22 17:59:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-22 17:59:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 539 transitions. [2020-08-22 17:59:07,806 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 539 transitions. Word has length 195 [2020-08-22 17:59:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:07,807 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 539 transitions. [2020-08-22 17:59:07,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 539 transitions. [2020-08-22 17:59:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-22 17:59:07,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:07,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:07,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:59:07,813 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash 306083937, now seen corresponding path program 1 times [2020-08-22 17:59:07,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:07,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952812503] [2020-08-22 17:59:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:07,816 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,133 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:59:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:59:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:59:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:08,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952812503] [2020-08-22 17:59:08,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:08,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:08,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55657157] [2020-08-22 17:59:08,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:08,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:08,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:08,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:08,412 INFO L87 Difference]: Start difference. First operand 495 states and 539 transitions. Second operand 11 states. [2020-08-22 17:59:09,551 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:09,794 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:10,045 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 17:59:10,282 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:10,533 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:10,754 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:11,696 INFO L93 Difference]: Finished difference Result 1058 states and 1232 transitions. [2020-08-22 17:59:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:59:11,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-08-22 17:59:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:11,701 INFO L225 Difference]: With dead ends: 1058 [2020-08-22 17:59:11,701 INFO L226 Difference]: Without dead ends: 678 [2020-08-22 17:59:11,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:59:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-08-22 17:59:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 511. [2020-08-22 17:59:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 17:59:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 555 transitions. [2020-08-22 17:59:11,887 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 555 transitions. Word has length 196 [2020-08-22 17:59:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:11,890 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 555 transitions. [2020-08-22 17:59:11,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 555 transitions. [2020-08-22 17:59:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-22 17:59:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:11,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:59:11,900 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash -833709887, now seen corresponding path program 1 times [2020-08-22 17:59:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:11,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533861425] [2020-08-22 17:59:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:11,908 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,208 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:59:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:59:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:59:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:12,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533861425] [2020-08-22 17:59:12,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:12,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 17:59:12,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616735660] [2020-08-22 17:59:12,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 17:59:12,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 17:59:12,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-22 17:59:12,434 INFO L87 Difference]: Start difference. First operand 511 states and 555 transitions. Second operand 14 states. [2020-08-22 17:59:12,983 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:13,229 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:13,459 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:13,692 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:13,915 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:14,824 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:15,063 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:15,306 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:15,553 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:15,786 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:16,990 INFO L93 Difference]: Finished difference Result 1096 states and 1286 transitions. [2020-08-22 17:59:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 17:59:16,991 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-22 17:59:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:16,995 INFO L225 Difference]: With dead ends: 1096 [2020-08-22 17:59:16,996 INFO L226 Difference]: Without dead ends: 700 [2020-08-22 17:59:16,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 17:59:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-08-22 17:59:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 523. [2020-08-22 17:59:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-08-22 17:59:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 567 transitions. [2020-08-22 17:59:17,178 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 567 transitions. Word has length 196 [2020-08-22 17:59:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:17,178 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 567 transitions. [2020-08-22 17:59:17,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 17:59:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 567 transitions. [2020-08-22 17:59:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-22 17:59:17,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:17,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:17,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:59:17,181 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:17,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1330134718, now seen corresponding path program 1 times [2020-08-22 17:59:17,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:17,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972264651] [2020-08-22 17:59:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:17,184 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,425 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:59:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:59:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:59:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:17,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972264651] [2020-08-22 17:59:17,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:17,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:59:17,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993143964] [2020-08-22 17:59:17,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:59:17,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:17,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:59:17,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:59:17,582 INFO L87 Difference]: Start difference. First operand 523 states and 567 transitions. Second operand 8 states. [2020-08-22 17:59:18,029 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:18,575 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:20,695 INFO L93 Difference]: Finished difference Result 1557 states and 1867 transitions. [2020-08-22 17:59:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 17:59:20,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-08-22 17:59:20,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:20,703 INFO L225 Difference]: With dead ends: 1557 [2020-08-22 17:59:20,703 INFO L226 Difference]: Without dead ends: 1149 [2020-08-22 17:59:20,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:59:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-08-22 17:59:20,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 917. [2020-08-22 17:59:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-08-22 17:59:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1023 transitions. [2020-08-22 17:59:20,964 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1023 transitions. Word has length 196 [2020-08-22 17:59:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:20,964 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1023 transitions. [2020-08-22 17:59:20,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:59:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1023 transitions. [2020-08-22 17:59:20,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-08-22 17:59:20,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:20,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:20,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:59:20,968 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:20,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1497513317, now seen corresponding path program 1 times [2020-08-22 17:59:20,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:20,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823487105] [2020-08-22 17:59:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:20,971 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,275 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:21,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:59:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:59:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 17:59:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 17:59:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 17:59:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:21,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823487105] [2020-08-22 17:59:21,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:21,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:59:21,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400895706] [2020-08-22 17:59:21,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:59:21,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:21,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:59:21,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:59:21,414 INFO L87 Difference]: Start difference. First operand 917 states and 1023 transitions. Second operand 8 states. [2020-08-22 17:59:21,860 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:24,040 INFO L93 Difference]: Finished difference Result 1759 states and 2100 transitions. [2020-08-22 17:59:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 17:59:24,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-08-22 17:59:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:24,050 INFO L225 Difference]: With dead ends: 1759 [2020-08-22 17:59:24,050 INFO L226 Difference]: Without dead ends: 1756 [2020-08-22 17:59:24,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2020-08-22 17:59:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-08-22 17:59:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1420. [2020-08-22 17:59:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-08-22 17:59:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1599 transitions. [2020-08-22 17:59:24,607 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1599 transitions. Word has length 201 [2020-08-22 17:59:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:24,607 INFO L479 AbstractCegarLoop]: Abstraction has 1420 states and 1599 transitions. [2020-08-22 17:59:24,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:59:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1599 transitions. [2020-08-22 17:59:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-08-22 17:59:24,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:24,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:24,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:59:24,613 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1505464834, now seen corresponding path program 1 times [2020-08-22 17:59:24,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:24,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558962902] [2020-08-22 17:59:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:24,654 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:59:24,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:59:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:59:24,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:59:25,036 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:59:25,036 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:59:25,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 17:59:25,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:59:25 BoogieIcfgContainer [2020-08-22 17:59:25,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:59:25,067 INFO L168 Benchmark]: Toolchain (without parser) took 42059.57 ms. Allocated memory was 139.5 MB in the beginning and 814.2 MB in the end (delta: 674.8 MB). Free memory was 102.8 MB in the beginning and 215.4 MB in the end (delta: -112.6 MB). Peak memory consumption was 562.1 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:25,068 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 17:59:25,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.22 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:25,070 INFO L168 Benchmark]: Boogie Preprocessor took 122.85 ms. Allocated memory is still 202.4 MB. Free memory was 170.3 MB in the beginning and 165.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:25,071 INFO L168 Benchmark]: RCFGBuilder took 1430.26 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 165.8 MB in the beginning and 176.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:25,071 INFO L168 Benchmark]: TraceAbstraction took 39853.21 ms. Allocated memory was 236.5 MB in the beginning and 814.2 MB in the end (delta: 577.8 MB). Free memory was 176.8 MB in the beginning and 215.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 539.2 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:25,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.22 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.85 ms. Allocated memory is still 202.4 MB. Free memory was 170.3 MB in the beginning and 165.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1430.26 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 165.8 MB in the beginning and 176.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39853.21 ms. Allocated memory was 236.5 MB in the beginning and 814.2 MB in the end (delta: 577.8 MB). Free memory was 176.8 MB in the beginning and 215.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 539.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 284]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L679] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L876] int methAndRunningLastTime ; [L257] int retValue_acc ; [L258] int tmp ; [L262] FCALL select_helpers() [L263] FCALL select_features() [L264] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L264] RET, EXPR valid_product() [L264] tmp = valid_product() [L266] COND TRUE \read(tmp) [L268] FCALL setup() [L269] CALL runTest() [L250] CALL __utac_acc__Specification2_spec__1() [L881] methAndRunningLastTime = 0 [L250] RET __utac_acc__Specification2_spec__1() [L251] CALL test() [L446] int splverifierCounter ; [L447] int tmp ; [L448] int tmp___0 ; [L449] int tmp___1 ; [L450] int tmp___2 ; [L453] splverifierCounter = 0 [L455] COND TRUE 1 [L457] COND TRUE splverifierCounter < 4 [L463] tmp = __VERIFIER_nondet_int() [L465] COND TRUE \read(tmp) [L467] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L467] RET waterRise() [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp___0) [L477] CALL changeMethaneLevel() [L115] COND FALSE !(\read(methaneLevelCritical)) [L118] methaneLevelCritical = 1 [L477] RET changeMethaneLevel() [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) [L498] CALL timeShift() [L300] COND FALSE !(\read(pumpRunning)) [L307] COND TRUE \read(systemActive) [L309] CALL processEnvironment() [L329] int tmp ; [L332] COND TRUE ! pumpRunning [L334] CALL, EXPR isHighWaterLevel() [L426] int retValue_acc ; [L427] int tmp ; [L428] int tmp___0 ; [L432] CALL, EXPR isHighWaterSensorDry() [L165] int retValue_acc ; [L168] COND FALSE !(waterLevel < 2) [L172] retValue_acc = 0 [L173] return (retValue_acc); [L432] RET, EXPR isHighWaterSensorDry() [L432] tmp = isHighWaterSensorDry() [L434] COND FALSE !(\read(tmp)) [L437] tmp___0 = 1 [L439] retValue_acc = tmp___0 [L440] return (retValue_acc); [L334] RET, EXPR isHighWaterLevel() [L334] tmp = isHighWaterLevel() [L336] COND TRUE \read(tmp) [L338] CALL activatePump() [L357] pumpRunning = 1 [L338] RET activatePump() [L309] RET processEnvironment() [L315] CALL __utac_acc__Specification2_spec__2() [L886] int tmp ; [L887] int tmp___0 ; [L891] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L891] RET, EXPR isMethaneLevelCritical() [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) [L895] CALL, EXPR isPumpRunning() [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); [L895] RET, EXPR isPumpRunning() [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) [L898] COND FALSE !(\read(methAndRunningLastTime)) [L903] methAndRunningLastTime = 1 [L315] RET __utac_acc__Specification2_spec__2() [L498] RET timeShift() [L455] COND TRUE 1 [L457] COND TRUE splverifierCounter < 4 [L463] tmp = __VERIFIER_nondet_int() [L465] COND FALSE !(\read(tmp)) [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp___0)) [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) [L498] CALL timeShift() [L300] COND TRUE \read(pumpRunning) [L302] CALL lowerWaterLevel() [L91] COND TRUE waterLevel > 0 [L92] waterLevel = waterLevel - 1 [L302] RET lowerWaterLevel() [L307] COND TRUE \read(systemActive) [L309] CALL processEnvironment() [L329] int tmp ; [L332] COND FALSE !(! pumpRunning) [L347] FCALL processEnvironment__wrappee__base() [L309] RET processEnvironment() [L315] CALL __utac_acc__Specification2_spec__2() [L886] int tmp ; [L887] int tmp___0 ; [L891] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L891] RET, EXPR isMethaneLevelCritical() [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) [L895] CALL, EXPR isPumpRunning() [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); [L895] RET, EXPR isPumpRunning() [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) [L898] COND TRUE \read(methAndRunningLastTime) [L900] CALL __automaton_fail() [L284] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 615 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.7s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2216 SDtfs, 5751 SDslu, 4229 SDs, 0 SdLazy, 7705 SolverSat, 1391 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1420occurred 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: 1.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 1399 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...