/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_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:03:13,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:03:13,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:03:13,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:03:13,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:03:13,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:03:13,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:03:13,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:03:13,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:03:13,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:03:13,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:03:13,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:03:13,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:03:13,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:03:13,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:03:13,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:03:13,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:03:13,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:03:13,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:03:13,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:03:13,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:03:13,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:03:13,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:03:13,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:03:13,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:03:13,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:03:13,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:03:13,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:03:13,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:03:13,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:03:13,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:03:13,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:03:13,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:03:13,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:03:13,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:03:13,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:03:13,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:03:13,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:03:13,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:03:13,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:03:13,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:03:13,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:03:13,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:03:13,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:03:13,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:03:13,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:03:13,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:03:13,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:03:13,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:03:13,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:03:13,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:03:13,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:03:13,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:03:13,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:03:13,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:03:13,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:03:13,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:03:13,715 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:03:13,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:03:13,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:03:13,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:03:13,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:03:13,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:03:13,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:03:13,717 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:03:14,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:03:14,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:03:14,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:03:14,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:03:14,170 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:03:14,171 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-04 15:03:14,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ed6bd652/718694cc7f874a40952fadafe1638a0c/FLAG7802cee15 [2020-09-04 15:03:14,888 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:03:14,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-04 15:03:14,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ed6bd652/718694cc7f874a40952fadafe1638a0c/FLAG7802cee15 [2020-09-04 15:03:15,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ed6bd652/718694cc7f874a40952fadafe1638a0c [2020-09-04 15:03:15,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:03:15,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:03:15,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:15,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:03:15,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:03:15,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15, skipping insertion in model container [2020-09-04 15:03:15,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:03:15,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:03:15,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:15,686 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:03:15,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:15,903 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:03:15,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15 WrapperNode [2020-09-04 15:03:15,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:15,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:03:15,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:03:15,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:03:15,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:15,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... [2020-09-04 15:03:16,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:03:16,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:03:16,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:03:16,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:03:16,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:03:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:03:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:03:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:03:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:03:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:03:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:03:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:03:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:03:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:03:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:03:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:03:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:03:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:03:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:03:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:03:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:03:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:03:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:03:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:03:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:03:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:03:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:03:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:03:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:03:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:03:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:03:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:03:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:03:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:03:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:03:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:03:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:03:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:03:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:03:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:03:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:03:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:03:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:03:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:03:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:03:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:03:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:03:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:03:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:03:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:03:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:03:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:03:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:03:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:03:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:03:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:03:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:03:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:03:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:03:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:03:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:03:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:03:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:03:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:03:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:03:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:03:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:03:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:03:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:03:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:03:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:03:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:03:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:03:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:03:17,344 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:03:17,344 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:03:17,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:17 BoogieIcfgContainer [2020-09-04 15:03:17,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:03:17,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:03:17,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:03:17,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:03:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:03:15" (1/3) ... [2020-09-04 15:03:17,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364301ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:17, skipping insertion in model container [2020-09-04 15:03:17,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:15" (2/3) ... [2020-09-04 15:03:17,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364301ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:17, skipping insertion in model container [2020-09-04 15:03:17,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:17" (3/3) ... [2020-09-04 15:03:17,363 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-09-04 15:03:17,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:03:17,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:03:17,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:03:17,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:03:17,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:03:17,453 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:03:17,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:03:17,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:03:17,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:03:17,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:03:17,454 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:03:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-09-04 15:03:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:03:17,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:17,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:17,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash 254159831, now seen corresponding path program 1 times [2020-09-04 15:03:17,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:17,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617791394] [2020-09-04 15:03:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:17,667 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,445 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:03:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:18,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617791394] [2020-09-04 15:03:18,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:18,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:03:18,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699950901] [2020-09-04 15:03:18,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:03:18,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:18,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:03:18,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:18,690 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2020-09-04 15:03:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:20,231 INFO L93 Difference]: Finished difference Result 512 states and 609 transitions. [2020-09-04 15:03:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:03:20,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:03:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:20,255 INFO L225 Difference]: With dead ends: 512 [2020-09-04 15:03:20,255 INFO L226 Difference]: Without dead ends: 315 [2020-09-04 15:03:20,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-04 15:03:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 271. [2020-09-04 15:03:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-04 15:03:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2020-09-04 15:03:20,406 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 142 [2020-09-04 15:03:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:20,407 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2020-09-04 15:03:20,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:03:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2020-09-04 15:03:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:03:20,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:20,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:20,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:03:20,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:20,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:20,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1230709371, now seen corresponding path program 1 times [2020-09-04 15:03:20,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:20,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633307149] [2020-09-04 15:03:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:20,418 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,915 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:03:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:20,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633307149] [2020-09-04 15:03:20,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:20,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:03:20,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858366257] [2020-09-04 15:03:20,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:03:20,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:03:20,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:03:20,998 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 4 states. [2020-09-04 15:03:21,676 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:22,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:22,791 INFO L93 Difference]: Finished difference Result 419 states and 472 transitions. [2020-09-04 15:03:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:03:22,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:03:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:22,800 INFO L225 Difference]: With dead ends: 419 [2020-09-04 15:03:22,801 INFO L226 Difference]: Without dead ends: 298 [2020-09-04 15:03:22,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:03:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-04 15:03:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-09-04 15:03:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-04 15:03:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 282 transitions. [2020-09-04 15:03:22,885 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 282 transitions. Word has length 143 [2020-09-04 15:03:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:22,886 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 282 transitions. [2020-09-04 15:03:22,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:03:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 282 transitions. [2020-09-04 15:03:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:03:22,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:22,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:22,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:03:22,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash -11881279, now seen corresponding path program 1 times [2020-09-04 15:03:22,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:22,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94635255] [2020-09-04 15:03:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:22,893 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,245 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:23,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:03:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:03:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:23,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94635255] [2020-09-04 15:03:23,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:23,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:23,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361061719] [2020-09-04 15:03:23,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:23,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:23,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:23,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:23,401 INFO L87 Difference]: Start difference. First operand 261 states and 282 transitions. Second operand 10 states. [2020-09-04 15:03:24,093 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:24,413 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:24,674 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:25,019 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:25,311 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:25,611 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:26,608 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:29,339 INFO L93 Difference]: Finished difference Result 718 states and 836 transitions. [2020-09-04 15:03:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:29,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:03:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:29,357 INFO L225 Difference]: With dead ends: 718 [2020-09-04 15:03:29,357 INFO L226 Difference]: Without dead ends: 567 [2020-09-04 15:03:29,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:03:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-09-04 15:03:29,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 472. [2020-09-04 15:03:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-04 15:03:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 528 transitions. [2020-09-04 15:03:29,548 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 528 transitions. Word has length 156 [2020-09-04 15:03:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:29,549 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 528 transitions. [2020-09-04 15:03:29,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 528 transitions. [2020-09-04 15:03:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:03:29,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:29,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:29,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:03:29,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash -409466612, now seen corresponding path program 1 times [2020-09-04 15:03:29,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:29,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065177516] [2020-09-04 15:03:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:29,557 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,952 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:29,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:03:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:03:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:03:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:30,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065177516] [2020-09-04 15:03:30,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:30,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:03:30,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845515771] [2020-09-04 15:03:30,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:03:30,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:30,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:03:30,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:03:30,121 INFO L87 Difference]: Start difference. First operand 472 states and 528 transitions. Second operand 9 states. [2020-09-04 15:03:30,615 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:32,111 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:32,451 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:32,892 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:33,248 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:33,573 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:33,879 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:34,198 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:34,782 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:36,107 INFO L93 Difference]: Finished difference Result 1314 states and 1572 transitions. [2020-09-04 15:03:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:36,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-04 15:03:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:36,115 INFO L225 Difference]: With dead ends: 1314 [2020-09-04 15:03:36,115 INFO L226 Difference]: Without dead ends: 952 [2020-09-04 15:03:36,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:03:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-09-04 15:03:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 795. [2020-09-04 15:03:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-09-04 15:03:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 902 transitions. [2020-09-04 15:03:36,357 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 902 transitions. Word has length 161 [2020-09-04 15:03:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:36,358 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 902 transitions. [2020-09-04 15:03:36,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:03:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 902 transitions. [2020-09-04 15:03:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:03:36,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:36,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:36,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:03:36,362 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1234625458, now seen corresponding path program 1 times [2020-09-04 15:03:36,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:36,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608829390] [2020-09-04 15:03:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:36,366 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,721 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:03:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:03:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:03:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:36,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608829390] [2020-09-04 15:03:36,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:36,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:36,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831565439] [2020-09-04 15:03:36,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:36,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:36,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:36,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:36,960 INFO L87 Difference]: Start difference. First operand 795 states and 902 transitions. Second operand 10 states. [2020-09-04 15:03:37,460 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:38,807 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:39,127 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:39,451 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:39,810 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:40,115 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:40,891 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:41,165 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:41,568 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:42,718 INFO L93 Difference]: Finished difference Result 2058 states and 2533 transitions. [2020-09-04 15:03:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:03:42,719 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-04 15:03:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:42,729 INFO L225 Difference]: With dead ends: 2058 [2020-09-04 15:03:42,729 INFO L226 Difference]: Without dead ends: 1373 [2020-09-04 15:03:42,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:03:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-09-04 15:03:43,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1105. [2020-09-04 15:03:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-09-04 15:03:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1273 transitions. [2020-09-04 15:03:43,093 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1273 transitions. Word has length 166 [2020-09-04 15:03:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:43,093 INFO L479 AbstractCegarLoop]: Abstraction has 1105 states and 1273 transitions. [2020-09-04 15:03:43,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1273 transitions. [2020-09-04 15:03:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:03:43,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:43,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:43,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:03:43,098 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1793051015, now seen corresponding path program 1 times [2020-09-04 15:03:43,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:43,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065666443] [2020-09-04 15:03:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:43,102 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,541 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:03:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:43,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065666443] [2020-09-04 15:03:43,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:43,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:43,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180176388] [2020-09-04 15:03:43,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:43,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:43,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:43,770 INFO L87 Difference]: Start difference. First operand 1105 states and 1273 transitions. Second operand 11 states. [2020-09-04 15:03:45,322 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:45,664 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:46,006 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:46,379 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:46,740 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:47,039 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:49,111 INFO L93 Difference]: Finished difference Result 2717 states and 3403 transitions. [2020-09-04 15:03:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:03:49,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-09-04 15:03:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:49,123 INFO L225 Difference]: With dead ends: 2717 [2020-09-04 15:03:49,124 INFO L226 Difference]: Without dead ends: 1722 [2020-09-04 15:03:49,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:03:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-09-04 15:03:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1143. [2020-09-04 15:03:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-09-04 15:03:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1313 transitions. [2020-09-04 15:03:49,460 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1313 transitions. Word has length 199 [2020-09-04 15:03:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:49,461 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1313 transitions. [2020-09-04 15:03:49,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:49,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1313 transitions. [2020-09-04 15:03:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:03:49,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:49,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:49,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:03:49,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 819180839, now seen corresponding path program 1 times [2020-09-04 15:03:49,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:49,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309750000] [2020-09-04 15:03:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:49,469 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,782 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:03:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:50,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309750000] [2020-09-04 15:03:50,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:50,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:03:50,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496124598] [2020-09-04 15:03:50,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:03:50,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:50,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:03:50,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:03:50,038 INFO L87 Difference]: Start difference. First operand 1143 states and 1313 transitions. Second operand 14 states. [2020-09-04 15:03:50,712 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:51,017 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:51,328 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:51,641 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:51,942 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:53,084 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:53,421 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:53,767 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:54,176 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:54,494 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:57,096 INFO L93 Difference]: Finished difference Result 2799 states and 3554 transitions. [2020-09-04 15:03:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:03:57,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2020-09-04 15:03:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:57,109 INFO L225 Difference]: With dead ends: 2799 [2020-09-04 15:03:57,109 INFO L226 Difference]: Without dead ends: 1766 [2020-09-04 15:03:57,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:03:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2020-09-04 15:03:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1167. [2020-09-04 15:03:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-09-04 15:03:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1337 transitions. [2020-09-04 15:03:57,636 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1337 transitions. Word has length 199 [2020-09-04 15:03:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:57,637 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1337 transitions. [2020-09-04 15:03:57,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:03:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1337 transitions. [2020-09-04 15:03:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:03:57,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:57,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:57,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:03:57,641 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:57,641 INFO L82 PathProgramCache]: Analyzing trace with hash -821113142, now seen corresponding path program 1 times [2020-09-04 15:03:57,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:57,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37521183] [2020-09-04 15:03:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:57,645 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:57,980 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:57,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:03:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:58,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37521183] [2020-09-04 15:03:58,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:58,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:03:58,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148767266] [2020-09-04 15:03:58,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:03:58,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:58,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:03:58,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:03:58,266 INFO L87 Difference]: Start difference. First operand 1167 states and 1337 transitions. Second operand 8 states. [2020-09-04 15:03:58,998 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:59,776 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:04:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:04,772 INFO L93 Difference]: Finished difference Result 4329 states and 5547 transitions. [2020-09-04 15:04:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 15:04:04,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-04 15:04:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:04,792 INFO L225 Difference]: With dead ends: 4329 [2020-09-04 15:04:04,793 INFO L226 Difference]: Without dead ends: 3272 [2020-09-04 15:04:04,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-09-04 15:04:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-09-04 15:04:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2347. [2020-09-04 15:04:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2020-09-04 15:04:05,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 2717 transitions. [2020-09-04 15:04:05,794 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 2717 transitions. Word has length 199 [2020-09-04 15:04:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:05,795 INFO L479 AbstractCegarLoop]: Abstraction has 2347 states and 2717 transitions. [2020-09-04 15:04:05,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:04:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 2717 transitions. [2020-09-04 15:04:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:04:05,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:05,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:05,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:04:05,800 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1861424498, now seen corresponding path program 1 times [2020-09-04 15:04:05,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:05,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319459884] [2020-09-04 15:04:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:05,804 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:04:05,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:04:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:04:05,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:04:06,312 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:04:06,312 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:04:06,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:04:06,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:04:06 BoogieIcfgContainer [2020-09-04 15:04:06,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:04:06,366 INFO L168 Benchmark]: Toolchain (without parser) took 51183.81 ms. Allocated memory was 139.5 MB in the beginning and 1.1 GB in the end (delta: 936.9 MB). Free memory was 102.8 MB in the beginning and 324.7 MB in the end (delta: -221.8 MB). Peak memory consumption was 715.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:06,371 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:04:06,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.88 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 173.8 MB in the end (delta: -71.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:06,377 INFO L168 Benchmark]: Boogie Preprocessor took 97.74 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:06,378 INFO L168 Benchmark]: RCFGBuilder took 1349.84 ms. Allocated memory was 203.9 MB in the beginning and 238.0 MB in the end (delta: 34.1 MB). Free memory was 169.0 MB in the beginning and 177.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:06,381 INFO L168 Benchmark]: TraceAbstraction took 49010.25 ms. Allocated memory was 238.0 MB in the beginning and 1.1 GB in the end (delta: 838.3 MB). Free memory was 176.4 MB in the beginning and 324.7 MB in the end (delta: -148.3 MB). Peak memory consumption was 690.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:06,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.88 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 173.8 MB in the end (delta: -71.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.74 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1349.84 ms. Allocated memory was 203.9 MB in the beginning and 238.0 MB in the end (delta: 34.1 MB). Free memory was 169.0 MB in the beginning and 177.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 49010.25 ms. Allocated memory was 238.0 MB in the beginning and 1.1 GB in the end (delta: 838.3 MB). Free memory was 176.4 MB in the beginning and 324.7 MB in the end (delta: -148.3 MB). Peak memory consumption was 690.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int retValue_acc ; [L535] int tmp ; [L539] FCALL select_helpers() [L540] FCALL select_features() [L541] CALL, EXPR valid_product() [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); [L541] RET, EXPR valid_product() [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) [L545] FCALL setup() [L546] CALL runTest() [L525] CALL test() [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 [L399] COND TRUE 1 [L401] COND TRUE splverifierCounter < 4 [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) [L411] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L411] RET waterRise() [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) [L421] CALL changeMethaneLevel() [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 [L421] RET changeMethaneLevel() [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND TRUE \read(tmp___2) [L431] CALL startSystem() [L374] systemActive = 1 [L431] RET startSystem() [L446] CALL timeShift() [L166] COND FALSE !(\read(pumpRunning)) [L173] COND TRUE \read(systemActive) [L175] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__highWaterSensor() [L195] int tmp ; [L198] COND TRUE ! pumpRunning [L200] CALL, EXPR isHighWaterLevel() [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; [L324] CALL, EXPR isHighWaterSensorDry() [L128] int retValue_acc ; [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); [L324] RET, EXPR isHighWaterSensorDry() [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); [L200] RET, EXPR isHighWaterLevel() [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) [L204] CALL activatePump() [L249] pumpRunning = 1 [L204] RET activatePump() [L239] RET processEnvironment__wrappee__highWaterSensor() [L175] RET processEnvironment() [L181] CALL __utac_acc__Specification1_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L563] RET, EXPR isMethaneLevelCritical() [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) [L567] CALL, EXPR isPumpRunning() [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L383] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 647 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2100 SDtfs, 4648 SDslu, 4287 SDs, 0 SdLazy, 9356 SolverSat, 1526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2347occurred 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: 2.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2704 StatesRemovedByMinimization, 8 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...