/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 20:55:13,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 20:55:13,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 20:55:13,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 20:55:13,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 20:55:13,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 20:55:13,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 20:55:13,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 20:55:13,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 20:55:13,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 20:55:13,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 20:55:13,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 20:55:13,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 20:55:13,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 20:55:13,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 20:55:13,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 20:55:13,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 20:55:13,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 20:55:13,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 20:55:13,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 20:55:13,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 20:55:13,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 20:55:13,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 20:55:13,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 20:55:13,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 20:55:13,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 20:55:13,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 20:55:13,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 20:55:13,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 20:55:13,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 20:55:13,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 20:55:13,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 20:55:13,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 20:55:13,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 20:55:13,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 20:55:13,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 20:55:13,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 20:55:13,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 20:55:13,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 20:55:13,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 20:55:13,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 20:55:13,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 20:55:13,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 20:55:13,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 20:55:13,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 20:55:13,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 20:55:13,945 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 20:55:13,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 20:55:13,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 20:55:13,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 20:55:13,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 20:55:13,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 20:55:13,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 20:55:13,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 20:55:13,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 20:55:13,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 20:55:13,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 20:55:13,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 20:55:13,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 20:55:13,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 20:55:13,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 20:55:13,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 20:55:13,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 20:55:13,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 20:55:13,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 20:55:13,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 20:55:13,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 20:55:13,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 20:55:13,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 20:55:13,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 20:55:13,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 20:55:13,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 20:55:14,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 20:55:14,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 20:55:14,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 20:55:14,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 20:55:14,238 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 20:55:14,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-07-19 20:55:14,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142cdef9f/23f0b9e679924a28b98244303727e430/FLAG5217ef6be [2020-07-19 20:55:14,865 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 20:55:14,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-07-19 20:55:14,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142cdef9f/23f0b9e679924a28b98244303727e430/FLAG5217ef6be [2020-07-19 20:55:15,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142cdef9f/23f0b9e679924a28b98244303727e430 [2020-07-19 20:55:15,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 20:55:15,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 20:55:15,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 20:55:15,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 20:55:15,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 20:55:15,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e98d2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15, skipping insertion in model container [2020-07-19 20:55:15,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 20:55:15,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 20:55:15,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 20:55:15,698 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 20:55:15,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 20:55:15,825 INFO L208 MainTranslator]: Completed translation [2020-07-19 20:55:15,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15 WrapperNode [2020-07-19 20:55:15,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 20:55:15,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 20:55:15,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 20:55:15,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 20:55:15,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... [2020-07-19 20:55:15,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 20:55:15,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 20:55:15,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 20:55:15,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 20:55:15,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 20:55:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 20:55:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 20:55:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-19 20:55:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-19 20:55:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-19 20:55:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-19 20:55:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-19 20:55:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-19 20:55:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-19 20:55:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-19 20:55:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-19 20:55:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-19 20:55:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-19 20:55:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-19 20:55:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-19 20:55:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-19 20:55:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-19 20:55:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-19 20:55:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-19 20:55:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-19 20:55:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-19 20:55:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-19 20:55:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-19 20:55:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-19 20:55:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-19 20:55:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-19 20:55:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-19 20:55:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-19 20:55:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-19 20:55:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-19 20:55:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-19 20:55:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-19 20:55:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-19 20:55:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-19 20:55:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-19 20:55:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-19 20:55:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-19 20:55:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-19 20:55:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-19 20:55:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 20:55:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 20:55:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 20:55:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-19 20:55:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-19 20:55:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-19 20:55:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 20:55:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-19 20:55:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 20:55:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-19 20:55:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-19 20:55:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 20:55:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-19 20:55:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-19 20:55:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 20:55:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-19 20:55:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-19 20:55:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-19 20:55:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-19 20:55:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-19 20:55:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-19 20:55:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-19 20:55:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-19 20:55:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-19 20:55:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-19 20:55:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-19 20:55:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-19 20:55:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-19 20:55:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-19 20:55:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-19 20:55:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-19 20:55:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-19 20:55:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-19 20:55:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-19 20:55:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-19 20:55:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-19 20:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-19 20:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-19 20:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-19 20:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 20:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 20:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 20:55:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 20:55:17,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 20:55:17,110 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-19 20:55:17,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:55:17 BoogieIcfgContainer [2020-07-19 20:55:17,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 20:55:17,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 20:55:17,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 20:55:17,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 20:55:17,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:55:15" (1/3) ... [2020-07-19 20:55:17,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2883f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:55:17, skipping insertion in model container [2020-07-19 20:55:17,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:15" (2/3) ... [2020-07-19 20:55:17,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2883f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:55:17, skipping insertion in model container [2020-07-19 20:55:17,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:55:17" (3/3) ... [2020-07-19 20:55:17,124 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-07-19 20:55:17,135 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 20:55:17,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 20:55:17,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 20:55:17,179 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 20:55:17,179 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 20:55:17,179 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 20:55:17,180 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 20:55:17,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 20:55:17,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 20:55:17,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 20:55:17,181 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 20:55:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-07-19 20:55:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-19 20:55:17,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:17,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:17,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-07-19 20:55:17,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:17,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095137441] [2020-07-19 20:55:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,931 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:18,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095137441] [2020-07-19 20:55:18,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:18,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 20:55:18,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791530434] [2020-07-19 20:55:18,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 20:55:18,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:18,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 20:55:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 20:55:18,049 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-07-19 20:55:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:19,273 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-07-19 20:55:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 20:55:19,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-19 20:55:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:19,297 INFO L225 Difference]: With dead ends: 304 [2020-07-19 20:55:19,298 INFO L226 Difference]: Without dead ends: 165 [2020-07-19 20:55:19,307 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 [2020-07-19 20:55:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-19 20:55:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-07-19 20:55:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-19 20:55:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-07-19 20:55:19,401 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-07-19 20:55:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:19,401 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-07-19 20:55:19,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 20:55:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-07-19 20:55:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-19 20:55:19,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:19,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:19,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 20:55:19,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-07-19 20:55:19,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:19,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679179830] [2020-07-19 20:55:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,812 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:19,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679179830] [2020-07-19 20:55:19,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:19,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 20:55:19,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993819231] [2020-07-19 20:55:19,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 20:55:19,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:19,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 20:55:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 20:55:19,859 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-07-19 20:55:20,287 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:21,178 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-07-19 20:55:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 20:55:21,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-19 20:55:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:21,183 INFO L225 Difference]: With dead ends: 224 [2020-07-19 20:55:21,183 INFO L226 Difference]: Without dead ends: 149 [2020-07-19 20:55:21,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 20:55:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-19 20:55:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-07-19 20:55:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-19 20:55:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-07-19 20:55:21,225 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-07-19 20:55:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:21,226 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-07-19 20:55:21,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 20:55:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-07-19 20:55:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-19 20:55:21,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:21,228 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] [2020-07-19 20:55:21,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 20:55:21,229 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-07-19 20:55:21,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:21,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458020304] [2020-07-19 20:55:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,623 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:21,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458020304] [2020-07-19 20:55:21,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:21,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 20:55:21,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868418958] [2020-07-19 20:55:21,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:55:21,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:21,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:55:21,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-19 20:55:21,702 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-07-19 20:55:22,083 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:22,389 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:22,670 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:22,906 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:23,673 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:25,403 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-07-19 20:55:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 20:55:25,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-07-19 20:55:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:25,409 INFO L225 Difference]: With dead ends: 418 [2020-07-19 20:55:25,409 INFO L226 Difference]: Without dead ends: 321 [2020-07-19 20:55:25,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-07-19 20:55:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-07-19 20:55:25,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-07-19 20:55:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-07-19 20:55:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-07-19 20:55:25,473 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-07-19 20:55:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:25,474 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-07-19 20:55:25,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:55:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-07-19 20:55:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 20:55:25,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:25,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:25,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 20:55:25,478 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:25,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-07-19 20:55:25,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:25,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883339396] [2020-07-19 20:55:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,757 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:25,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883339396] [2020-07-19 20:55:25,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:25,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 20:55:25,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155867705] [2020-07-19 20:55:25,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:55:25,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:25,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:55:25,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-19 20:55:25,873 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-07-19 20:55:26,253 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:27,298 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:27,623 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:27,906 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:28,135 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:28,480 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:29,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:29,448 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-07-19 20:55:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:55:29,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-07-19 20:55:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:29,457 INFO L225 Difference]: With dead ends: 793 [2020-07-19 20:55:29,458 INFO L226 Difference]: Without dead ends: 573 [2020-07-19 20:55:29,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-07-19 20:55:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-07-19 20:55:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-07-19 20:55:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-07-19 20:55:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-07-19 20:55:29,573 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-07-19 20:55:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:29,574 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-07-19 20:55:29,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:55:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-07-19 20:55:29,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-19 20:55:29,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:29,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:29,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 20:55:29,578 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:29,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:29,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-07-19 20:55:29,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:29,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555828765] [2020-07-19 20:55:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,839 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:29,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555828765] [2020-07-19 20:55:29,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:29,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:55:29,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879892424] [2020-07-19 20:55:29,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:55:29,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:29,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:55:29,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:55:29,987 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-07-19 20:55:30,426 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:31,440 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:31,710 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:31,967 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:32,607 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:32,859 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:33,727 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-07-19 20:55:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 20:55:33,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-07-19 20:55:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:33,738 INFO L225 Difference]: With dead ends: 1254 [2020-07-19 20:55:33,738 INFO L226 Difference]: Without dead ends: 835 [2020-07-19 20:55:33,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-07-19 20:55:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-07-19 20:55:33,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-07-19 20:55:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-07-19 20:55:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-07-19 20:55:33,914 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-07-19 20:55:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:33,914 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-07-19 20:55:33,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:55:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-07-19 20:55:33,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-19 20:55:33,918 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:33,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:33,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 20:55:33,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-07-19 20:55:33,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:33,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635403150] [2020-07-19 20:55:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,204 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 20:55:34,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635403150] [2020-07-19 20:55:34,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:34,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:55:34,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820677068] [2020-07-19 20:55:34,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:55:34,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:55:34,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:55:34,363 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-07-19 20:55:34,746 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:35,708 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:35,956 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-19 20:55:36,214 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:36,481 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-19 20:55:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:38,217 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-07-19 20:55:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 20:55:38,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-07-19 20:55:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:38,230 INFO L225 Difference]: With dead ends: 2315 [2020-07-19 20:55:38,230 INFO L226 Difference]: Without dead ends: 1668 [2020-07-19 20:55:38,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-07-19 20:55:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-07-19 20:55:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-07-19 20:55:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-07-19 20:55:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-07-19 20:55:38,639 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-07-19 20:55:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:38,639 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-07-19 20:55:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:55:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-07-19 20:55:38,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-19 20:55:38,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:38,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:38,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 20:55:38,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-07-19 20:55:38,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:38,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169613613] [2020-07-19 20:55:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:38,978 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 20:55:39,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169613613] [2020-07-19 20:55:39,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:39,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:55:39,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145096291] [2020-07-19 20:55:39,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:55:39,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:39,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:55:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:55:39,126 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-07-19 20:55:40,138 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:40,374 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-19 20:55:40,645 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:40,903 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:41,928 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-07-19 20:55:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 20:55:41,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-07-19 20:55:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:41,942 INFO L225 Difference]: With dead ends: 2944 [2020-07-19 20:55:41,942 INFO L226 Difference]: Without dead ends: 1697 [2020-07-19 20:55:41,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-19 20:55:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-07-19 20:55:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-07-19 20:55:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-07-19 20:55:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-07-19 20:55:42,319 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-07-19 20:55:42,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:42,320 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-07-19 20:55:42,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:55:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-07-19 20:55:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-19 20:55:42,324 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:42,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:42,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 20:55:42,325 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:42,326 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-07-19 20:55:42,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:42,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366504160] [2020-07-19 20:55:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,596 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 20:55:42,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366504160] [2020-07-19 20:55:42,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:42,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-19 20:55:42,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614397681] [2020-07-19 20:55:42,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 20:55:42,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:42,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 20:55:42,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-19 20:55:42,749 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-07-19 20:55:43,379 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:43,599 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:43,816 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:44,522 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:44,823 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:45,067 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:46,216 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-07-19 20:55:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:55:46,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-07-19 20:55:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:46,225 INFO L225 Difference]: With dead ends: 2566 [2020-07-19 20:55:46,226 INFO L226 Difference]: Without dead ends: 1279 [2020-07-19 20:55:46,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-07-19 20:55:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-07-19 20:55:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-07-19 20:55:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-07-19 20:55:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-07-19 20:55:46,540 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-07-19 20:55:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:46,540 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-07-19 20:55:46,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 20:55:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-07-19 20:55:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-19 20:55:46,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:46,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:46,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 20:55:46,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:46,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:46,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-07-19 20:55:46,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:46,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927425411] [2020-07-19 20:55:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,830 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 20:55:47,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927425411] [2020-07-19 20:55:47,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081095335] [2020-07-19 20:55:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 20:55:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:47,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-19 20:55:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 20:55:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:47,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 20:55:47,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2020-07-19 20:55:47,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982058361] [2020-07-19 20:55:47,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:55:47,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:55:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2020-07-19 20:55:47,433 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 8 states. [2020-07-19 20:55:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:47,842 INFO L93 Difference]: Finished difference Result 2012 states and 2382 transitions. [2020-07-19 20:55:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 20:55:47,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-07-19 20:55:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:47,849 INFO L225 Difference]: With dead ends: 2012 [2020-07-19 20:55:47,850 INFO L226 Difference]: Without dead ends: 1007 [2020-07-19 20:55:47,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2020-07-19 20:55:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-07-19 20:55:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1007. [2020-07-19 20:55:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-07-19 20:55:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-07-19 20:55:48,059 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-07-19 20:55:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:48,061 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-07-19 20:55:48,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:55:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-07-19 20:55:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-19 20:55:48,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:48,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:48,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-19 20:55:48,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:48,283 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-07-19 20:55:48,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:48,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142129308] [2020-07-19 20:55:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2afc589 [2020-07-19 20:55:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 20:55:48,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 20:55:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 20:55:48,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 20:55:48,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 20:55:48,621 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 20:55:48,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 20:55:48,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:55:48 BoogieIcfgContainer [2020-07-19 20:55:48,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 20:55:48,795 INFO L168 Benchmark]: Toolchain (without parser) took 33618.54 ms. Allocated memory was 144.7 MB in the beginning and 712.0 MB in the end (delta: 567.3 MB). Free memory was 101.2 MB in the beginning and 60.2 MB in the end (delta: 40.9 MB). Peak memory consumption was 608.2 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:48,796 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 20:55:48,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.03 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 166.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:48,798 INFO L168 Benchmark]: Boogie Preprocessor took 101.78 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 162.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:48,798 INFO L168 Benchmark]: RCFGBuilder took 1186.41 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 162.6 MB in the beginning and 192.4 MB in the end (delta: -29.8 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:48,799 INFO L168 Benchmark]: TraceAbstraction took 31677.18 ms. Allocated memory was 234.4 MB in the beginning and 712.0 MB in the end (delta: 477.6 MB). Free memory was 191.0 MB in the beginning and 60.2 MB in the end (delta: 130.8 MB). Peak memory consumption was 608.4 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:48,802 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.03 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 166.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.78 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 162.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1186.41 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 162.6 MB in the beginning and 192.4 MB in the end (delta: -29.8 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31677.18 ms. Allocated memory was 234.4 MB in the beginning and 712.0 MB in the end (delta: 477.6 MB). Free memory was 191.0 MB in the beginning and 60.2 MB in the end (delta: 130.8 MB). Peak memory consumption was 608.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=172, \old(head)=162, \old(head)=176, \old(methaneLevelCritical)=145, \old(pumpRunning)=132, \old(systemActive)=131, \old(waterLevel)=138, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L924] int retValue_acc ; [L925] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L929] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L930] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L931] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L931] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L935] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L936] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L918] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L431] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L433] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L443] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L443] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L478] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L513] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L515] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L538] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L773] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L656] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L540] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L544] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L594] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L598] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L573] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L579] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L563] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L579] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L544] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L515] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L521] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L788] int tmp ; [L789] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L793] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L793] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L521] RET __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L478] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L431] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L433] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L453] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L453] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L478] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L506] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L508] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L513] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L538] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L553] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L521] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L788] int tmp ; [L789] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L793] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L797] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L797] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L801] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L44] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1153 SDtfs, 1688 SDslu, 1640 SDs, 0 SdLazy, 5569 SolverSat, 1057 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1467 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 731 ConstructedInterpolants, 0 QuantifiedInterpolants, 217900 SizeOfPredicates, 3 NumberOfNonLiveVariables, 773 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 13/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...