/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_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:39:12,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:39:12,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:39:12,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:39:12,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:39:12,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:39:12,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:39:12,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:39:12,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:39:12,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:39:12,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:39:12,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:39:12,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:39:12,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:39:12,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:39:12,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:39:12,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:39:12,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:39:12,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:39:12,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:39:12,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:39:12,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:39:12,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:39:12,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:39:12,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:39:12,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:39:12,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:39:12,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:39:12,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:39:12,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:39:12,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:39:12,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:39:12,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:39:12,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:39:12,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:39:12,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:39:12,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:39:12,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:39:12,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:39:12,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:39:12,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:39:12,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:39:12,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:39:12,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:39:12,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:39:12,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:39:12,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:39:12,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:39:12,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:39:12,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:39:12,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:39:12,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:39:12,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:39:12,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:39:12,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:39:12,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:39:12,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:39:12,776 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:39:12,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:39:12,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:39:12,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:39:12,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:39:12,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:39:12,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:39:12,777 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:39:13,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:39:13,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:39:13,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:39:13,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:39:13,183 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:39:13,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-07-07 12:39:13,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1da282c/069dbe3d7b3c4ff391b9656b29e08b02/FLAG46f1f0ee8 [2020-07-07 12:39:13,763 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:39:13,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-07-07 12:39:13,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1da282c/069dbe3d7b3c4ff391b9656b29e08b02/FLAG46f1f0ee8 [2020-07-07 12:39:14,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1da282c/069dbe3d7b3c4ff391b9656b29e08b02 [2020-07-07 12:39:14,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:39:14,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:39:14,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:39:14,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:39:14,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:39:14,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b95161a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14, skipping insertion in model container [2020-07-07 12:39:14,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:39:14,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:39:14,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:39:14,697 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:39:14,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:39:14,845 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:39:14,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14 WrapperNode [2020-07-07 12:39:14,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:39:14,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:39:14,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:39:14,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:39:14,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:39:14,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:39:14,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:39:14,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:39:14,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (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 [2020-07-07 12:39:15,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:39:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:39:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:39:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:39:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:39:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:39:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:39:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:39:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:39:15,011 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:39:15,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:39:15,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:39:15,012 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:39:15,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:39:15,012 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:39:15,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:39:15,013 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:39:15,013 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:39:15,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:39:15,014 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:39:15,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:39:15,015 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:39:15,017 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:39:15,017 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:39:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:39:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:39:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:39:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:39:16,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:39:16,246 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:39:16,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:39:16 BoogieIcfgContainer [2020-07-07 12:39:16,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:39:16,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:39:16,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:39:16,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:39:16,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:39:14" (1/3) ... [2020-07-07 12:39:16,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@845063d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:39:16, skipping insertion in model container [2020-07-07 12:39:16,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14" (2/3) ... [2020-07-07 12:39:16,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@845063d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:39:16, skipping insertion in model container [2020-07-07 12:39:16,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:39:16" (3/3) ... [2020-07-07 12:39:16,262 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-07-07 12:39:16,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:39:16,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:39:16,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:39:16,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:39:16,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:39:16,324 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:39:16,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:39:16,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:39:16,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:39:16,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:39:16,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:39:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states. [2020-07-07 12:39:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:39:16,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:16,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:16,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:16,380 INFO L82 PathProgramCache]: Analyzing trace with hash 970389308, now seen corresponding path program 1 times [2020-07-07 12:39:16,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:16,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353308101] [2020-07-07 12:39:16,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,178 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:17,307 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:17,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353308101] [2020-07-07 12:39:17,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:17,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:39:17,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445152148] [2020-07-07 12:39:17,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:39:17,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:17,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:39:17,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:17,335 INFO L87 Difference]: Start difference. First operand 309 states. Second operand 3 states. [2020-07-07 12:39:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:18,628 INFO L93 Difference]: Finished difference Result 485 states and 572 transitions. [2020-07-07 12:39:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:39:18,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:39:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:18,648 INFO L225 Difference]: With dead ends: 485 [2020-07-07 12:39:18,648 INFO L226 Difference]: Without dead ends: 301 [2020-07-07 12:39:18,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-07-07 12:39:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2020-07-07 12:39:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-07 12:39:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 278 transitions. [2020-07-07 12:39:18,796 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 278 transitions. Word has length 142 [2020-07-07 12:39:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:18,797 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 278 transitions. [2020-07-07 12:39:18,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:39:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 278 transitions. [2020-07-07 12:39:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:39:18,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:18,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:18,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:39:18,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:18,804 INFO L82 PathProgramCache]: Analyzing trace with hash 123592191, now seen corresponding path program 1 times [2020-07-07 12:39:18,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:18,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385707653] [2020-07-07 12:39:18,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,243 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:19,318 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:19,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385707653] [2020-07-07 12:39:19,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:19,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:39:19,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24649295] [2020-07-07 12:39:19,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:39:19,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:19,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:39:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:39:19,321 INFO L87 Difference]: Start difference. First operand 258 states and 278 transitions. Second operand 4 states. [2020-07-07 12:39:19,906 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:20,855 INFO L93 Difference]: Finished difference Result 393 states and 437 transitions. [2020-07-07 12:39:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:39:20,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:39:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:20,861 INFO L225 Difference]: With dead ends: 393 [2020-07-07 12:39:20,861 INFO L226 Difference]: Without dead ends: 284 [2020-07-07 12:39:20,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:39:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-07-07 12:39:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 248. [2020-07-07 12:39:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-07 12:39:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 265 transitions. [2020-07-07 12:39:20,936 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 265 transitions. Word has length 143 [2020-07-07 12:39:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:20,937 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 265 transitions. [2020-07-07 12:39:20,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:39:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 265 transitions. [2020-07-07 12:39:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:39:20,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:20,940 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] [2020-07-07 12:39:20,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:39:20,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2086341092, now seen corresponding path program 1 times [2020-07-07 12:39:20,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:20,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738994862] [2020-07-07 12:39:20,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,300 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:21,454 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:21,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738994862] [2020-07-07 12:39:21,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:21,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:39:21,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018720658] [2020-07-07 12:39:21,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:39:21,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:21,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:39:21,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:39:21,457 INFO L87 Difference]: Start difference. First operand 248 states and 265 transitions. Second operand 9 states. [2020-07-07 12:39:21,940 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:22,263 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:22,506 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:22,738 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:22,988 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:23,216 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:24,137 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:26,118 INFO L93 Difference]: Finished difference Result 655 states and 744 transitions. [2020-07-07 12:39:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:39:26,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:39:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:26,124 INFO L225 Difference]: With dead ends: 655 [2020-07-07 12:39:26,124 INFO L226 Difference]: Without dead ends: 517 [2020-07-07 12:39:26,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:39:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-07-07 12:39:26,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 438. [2020-07-07 12:39:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-07-07 12:39:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 482 transitions. [2020-07-07 12:39:26,328 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 482 transitions. Word has length 152 [2020-07-07 12:39:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:26,330 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 482 transitions. [2020-07-07 12:39:26,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:39:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 482 transitions. [2020-07-07 12:39:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-07 12:39:26,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:26,334 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] [2020-07-07 12:39:26,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:39:26,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1245800221, now seen corresponding path program 1 times [2020-07-07 12:39:26,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:26,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316484287] [2020-07-07 12:39:26,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,697 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:26,890 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:26,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316484287] [2020-07-07 12:39:26,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:26,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 12:39:26,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156024957] [2020-07-07 12:39:26,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 12:39:26,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:26,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 12:39:26,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 12:39:26,897 INFO L87 Difference]: Start difference. First operand 438 states and 482 transitions. Second operand 6 states. [2020-07-07 12:39:27,539 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:29,486 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:30,008 INFO L93 Difference]: Finished difference Result 1076 states and 1253 transitions. [2020-07-07 12:39:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 12:39:30,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-07-07 12:39:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:30,016 INFO L225 Difference]: With dead ends: 1076 [2020-07-07 12:39:30,016 INFO L226 Difference]: Without dead ends: 748 [2020-07-07 12:39:30,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:39:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-07-07 12:39:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 632. [2020-07-07 12:39:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2020-07-07 12:39:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 696 transitions. [2020-07-07 12:39:30,256 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 696 transitions. Word has length 160 [2020-07-07 12:39:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:30,256 INFO L479 AbstractCegarLoop]: Abstraction has 632 states and 696 transitions. [2020-07-07 12:39:30,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 12:39:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 696 transitions. [2020-07-07 12:39:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:39:30,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:30,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:30,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:39:30,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:30,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1097300876, now seen corresponding path program 1 times [2020-07-07 12:39:30,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:30,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262167547] [2020-07-07 12:39:30,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,597 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:30,875 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:30,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262167547] [2020-07-07 12:39:30,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:30,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:30,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450588954] [2020-07-07 12:39:30,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:30,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:30,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:30,880 INFO L87 Difference]: Start difference. First operand 632 states and 696 transitions. Second operand 14 states. [2020-07-07 12:39:31,354 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:31,722 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:31,994 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:32,237 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:32,488 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:32,705 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:33,355 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:34,026 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:34,279 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:34,571 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:34,866 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:35,106 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:35,337 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:35,569 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:35,833 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:36,131 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:36,408 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:37,638 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:37,882 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:38,242 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:39,886 INFO L93 Difference]: Finished difference Result 2102 states and 2499 transitions. [2020-07-07 12:39:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 12:39:39,887 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-07-07 12:39:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:39,896 INFO L225 Difference]: With dead ends: 2102 [2020-07-07 12:39:39,897 INFO L226 Difference]: Without dead ends: 1580 [2020-07-07 12:39:39,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:39:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-07-07 12:39:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1461. [2020-07-07 12:39:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-07-07 12:39:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1643 transitions. [2020-07-07 12:39:40,359 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1643 transitions. Word has length 161 [2020-07-07 12:39:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:40,360 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1643 transitions. [2020-07-07 12:39:40,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1643 transitions. [2020-07-07 12:39:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-07 12:39:40,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:40,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:40,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:39:40,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:40,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:40,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1751686358, now seen corresponding path program 1 times [2020-07-07 12:39:40,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:40,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499596625] [2020-07-07 12:39:40,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,767 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:40,954 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:40,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499596625] [2020-07-07 12:39:40,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:40,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:39:40,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194847013] [2020-07-07 12:39:40,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:39:40,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:40,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:39:40,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:39:40,956 INFO L87 Difference]: Start difference. First operand 1461 states and 1643 transitions. Second operand 11 states. [2020-07-07 12:39:41,469 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:43,331 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:43,560 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:43,832 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:44,120 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:44,348 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:45,051 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:45,278 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:45,614 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:45,944 INFO L93 Difference]: Finished difference Result 1608 states and 1847 transitions. [2020-07-07 12:39:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:39:45,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-07-07 12:39:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:45,961 INFO L225 Difference]: With dead ends: 1608 [2020-07-07 12:39:45,961 INFO L226 Difference]: Without dead ends: 1605 [2020-07-07 12:39:45,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:39:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2020-07-07 12:39:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1461. [2020-07-07 12:39:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-07-07 12:39:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1640 transitions. [2020-07-07 12:39:46,327 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1640 transitions. Word has length 205 [2020-07-07 12:39:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:46,328 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1640 transitions. [2020-07-07 12:39:46,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:39:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1640 transitions. [2020-07-07 12:39:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-07 12:39:46,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:46,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:46,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:39:46,338 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:46,339 INFO L82 PathProgramCache]: Analyzing trace with hash -508378459, now seen corresponding path program 1 times [2020-07-07 12:39:46,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:46,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146813068] [2020-07-07 12:39:46,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,691 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:47,051 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:47,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146813068] [2020-07-07 12:39:47,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:47,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:47,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093713890] [2020-07-07 12:39:47,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:47,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:47,054 INFO L87 Difference]: Start difference. First operand 1461 states and 1640 transitions. Second operand 14 states. [2020-07-07 12:39:47,503 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:48,239 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:49,175 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:49,450 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:49,741 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:50,065 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:50,345 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:50,657 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:50,920 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:51,253 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:51,513 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:51,827 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:52,165 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:52,496 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:54,705 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:54,957 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:55,220 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:39:55,476 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:55,743 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:55,977 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:56,697 INFO L93 Difference]: Finished difference Result 3083 states and 3671 transitions. [2020-07-07 12:39:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 12:39:56,697 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 263 [2020-07-07 12:39:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:56,709 INFO L225 Difference]: With dead ends: 3083 [2020-07-07 12:39:56,709 INFO L226 Difference]: Without dead ends: 1732 [2020-07-07 12:39:56,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 12:39:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-07-07 12:39:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1455. [2020-07-07 12:39:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1455 states. [2020-07-07 12:39:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1635 transitions. [2020-07-07 12:39:57,345 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1635 transitions. Word has length 263 [2020-07-07 12:39:57,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:57,346 INFO L479 AbstractCegarLoop]: Abstraction has 1455 states and 1635 transitions. [2020-07-07 12:39:57,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:57,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1635 transitions. [2020-07-07 12:39:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-07-07 12:39:57,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:57,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:57,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:39:57,358 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1965471222, now seen corresponding path program 1 times [2020-07-07 12:39:57,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:57,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579111721] [2020-07-07 12:39:57,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,778 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:58,033 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:58,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579111721] [2020-07-07 12:39:58,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:58,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 12:39:58,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288755109] [2020-07-07 12:39:58,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 12:39:58,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:58,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 12:39:58,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-07-07 12:39:58,036 INFO L87 Difference]: Start difference. First operand 1455 states and 1635 transitions. Second operand 13 states. [2020-07-07 12:39:58,489 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:59,142 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:59,808 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:00,061 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:00,380 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:00,650 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:00,879 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:01,116 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:01,340 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:01,601 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:01,915 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:02,182 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:03,866 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:04,084 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:05,778 INFO L93 Difference]: Finished difference Result 3396 states and 4079 transitions. [2020-07-07 12:40:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 12:40:05,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 259 [2020-07-07 12:40:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:05,796 INFO L225 Difference]: With dead ends: 3396 [2020-07-07 12:40:05,796 INFO L226 Difference]: Without dead ends: 2450 [2020-07-07 12:40:05,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 12:40:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2020-07-07 12:40:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1916. [2020-07-07 12:40:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-07-07 12:40:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2170 transitions. [2020-07-07 12:40:06,580 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2170 transitions. Word has length 259 [2020-07-07 12:40:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:06,581 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2170 transitions. [2020-07-07 12:40:06,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 12:40:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2170 transitions. [2020-07-07 12:40:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-07 12:40:06,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:06,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:40:06,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:40:06,587 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1879249442, now seen corresponding path program 1 times [2020-07-07 12:40:06,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:06,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809540134] [2020-07-07 12:40:06,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,958 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:40:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:40:07,289 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:07,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809540134] [2020-07-07 12:40:07,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:40:07,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:40:07,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34902981] [2020-07-07 12:40:07,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:40:07,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:40:07,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:40:07,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:40:07,291 INFO L87 Difference]: Start difference. First operand 1916 states and 2170 transitions. Second operand 14 states. [2020-07-07 12:40:07,811 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:08,064 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:08,301 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:08,530 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:08,749 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:09,585 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:09,823 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:10,069 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:10,334 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:10,567 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:11,901 INFO L93 Difference]: Finished difference Result 3381 states and 3926 transitions. [2020-07-07 12:40:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:40:11,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 254 [2020-07-07 12:40:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:11,910 INFO L225 Difference]: With dead ends: 3381 [2020-07-07 12:40:11,910 INFO L226 Difference]: Without dead ends: 1575 [2020-07-07 12:40:11,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:40:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-07-07 12:40:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1489. [2020-07-07 12:40:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-07-07 12:40:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1694 transitions. [2020-07-07 12:40:12,375 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1694 transitions. Word has length 254 [2020-07-07 12:40:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:12,375 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1694 transitions. [2020-07-07 12:40:12,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:40:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1694 transitions. [2020-07-07 12:40:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-07 12:40:12,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:12,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-07-07 12:40:12,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:40:12,382 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash 169391274, now seen corresponding path program 2 times [2020-07-07 12:40:12,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:12,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909237256] [2020-07-07 12:40:12,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:40:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:40:12,795 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:12,795 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:40:12,795 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:40:12,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:40:12,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:40:12 BoogieIcfgContainer [2020-07-07 12:40:12,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:40:12,828 INFO L168 Benchmark]: Toolchain (without parser) took 58697.93 ms. Allocated memory was 144.2 MB in the beginning and 1.0 GB in the end (delta: 869.8 MB). Free memory was 106.8 MB in the beginning and 384.9 MB in the end (delta: -278.1 MB). Peak memory consumption was 591.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:12,829 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 126.1 MB in the beginning and 125.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:40:12,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.80 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 106.6 MB in the beginning and 174.1 MB in the end (delta: -67.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:12,832 INFO L168 Benchmark]: Boogie Preprocessor took 90.02 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 169.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:12,833 INFO L168 Benchmark]: RCFGBuilder took 1317.06 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 169.7 MB in the beginning and 164.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 75.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:12,834 INFO L168 Benchmark]: TraceAbstraction took 56571.78 ms. Allocated memory was 230.7 MB in the beginning and 1.0 GB in the end (delta: 783.3 MB). Free memory was 164.8 MB in the beginning and 384.9 MB in the end (delta: -220.1 MB). Peak memory consumption was 563.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:12,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 126.1 MB in the beginning and 125.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.80 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 106.6 MB in the beginning and 174.1 MB in the end (delta: -67.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.02 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 169.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1317.06 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 169.7 MB in the beginning and 164.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 75.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 56571.78 ms. Allocated memory was 230.7 MB in the beginning and 1.0 GB in the end (delta: 783.3 MB). Free memory was 164.8 MB in the beginning and 384.9 MB in the end (delta: -220.1 MB). Peak memory consumption was 563.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 310]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L535] int retValue_acc ; [L538] retValue_acc = 1 [L539] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L162] CALL, EXPR isHighWaterLevel() [L272] int retValue_acc ; [L273] int tmp ; [L274] int tmp___0 ; [L278] CALL, EXPR isHighWaterSensorDry() [L495] int retValue_acc ; [L498] COND FALSE !(waterLevel < 2) [L502] retValue_acc = 0 [L503] return (retValue_acc); [L278] RET, EXPR isHighWaterSensorDry() [L278] tmp = isHighWaterSensorDry() [L280] COND FALSE !(\read(tmp)) [L283] tmp___0 = 1 [L285] retValue_acc = tmp___0 [L286] return (retValue_acc); [L162] RET, EXPR isHighWaterLevel() [L162] tmp = isHighWaterLevel() [L164] COND TRUE \read(tmp) [L166] CALL activatePump() [L191] int tmp ; [L195] CALL, EXPR isMethaneAlarm() [L216] int retValue_acc ; [L220] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L220] RET, EXPR isMethaneLevelCritical() [L220] retValue_acc = isMethaneLevelCritical() [L222] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) [L201] CALL activatePump__wrappee__highWaterSensor() [L185] pumpRunning = 1 [L201] RET activatePump__wrappee__highWaterSensor() [L166] RET activatePump() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L920] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) [L924] CALL __automaton_fail() [L310] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 56.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 46.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2299 SDtfs, 4959 SDslu, 5536 SDs, 0 SdLazy, 12363 SolverSat, 1588 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 277 SyntacticMatches, 6 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1434 StatesRemovedByMinimization, 9 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...