/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_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 20:55:38,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 20:55:38,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 20:55:38,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 20:55:38,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 20:55:38,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 20:55:38,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 20:55:38,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 20:55:38,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 20:55:38,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 20:55:38,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 20:55:38,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 20:55:38,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 20:55:38,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 20:55:38,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 20:55:38,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 20:55:38,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 20:55:38,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 20:55:38,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 20:55:38,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 20:55:38,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 20:55:38,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 20:55:38,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 20:55:38,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 20:55:38,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 20:55:38,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 20:55:38,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 20:55:38,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 20:55:38,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 20:55:38,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 20:55:38,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 20:55:38,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 20:55:38,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 20:55:38,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 20:55:38,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 20:55:38,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 20:55:38,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 20:55:38,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 20:55:38,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 20:55:38,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 20:55:38,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 20:55:38,850 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 20:55:38,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 20:55:38,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 20:55:38,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 20:55:38,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 20:55:38,872 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 20:55:38,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 20:55:38,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 20:55:38,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 20:55:38,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 20:55:38,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 20:55:38,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 20:55:38,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 20:55:38,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 20:55:38,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 20:55:38,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 20:55:38,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 20:55:38,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 20:55:38,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 20:55:38,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 20:55:38,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 20:55:38,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 20:55:38,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 20:55:38,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 20:55:38,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 20:55:38,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 20:55:38,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 20:55:38,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 20:55:38,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 20:55:38,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 20:55:38,877 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 20:55:39,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 20:55:39,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 20:55:39,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 20:55:39,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 20:55:39,162 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 20:55:39,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-19 20:55:39,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71e48da1/befdab1fe291470295d4e33f6c2ef214/FLAG09f1a0677 [2020-07-19 20:55:39,742 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 20:55:39,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-19 20:55:39,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71e48da1/befdab1fe291470295d4e33f6c2ef214/FLAG09f1a0677 [2020-07-19 20:55:40,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71e48da1/befdab1fe291470295d4e33f6c2ef214 [2020-07-19 20:55:40,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 20:55:40,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 20:55:40,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 20:55:40,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 20:55:40,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 20:55:40,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40, skipping insertion in model container [2020-07-19 20:55:40,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 20:55:40,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 20:55:40,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 20:55:40,610 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 20:55:40,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 20:55:40,722 INFO L208 MainTranslator]: Completed translation [2020-07-19 20:55:40,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40 WrapperNode [2020-07-19 20:55:40,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 20:55:40,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 20:55:40,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 20:55:40,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 20:55:40,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (1/1) ... [2020-07-19 20:55:40,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 20:55:40,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 20:55:40,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 20:55:40,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 20:55:40,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (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 20:55:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 20:55:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 20:55:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-19 20:55:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-19 20:55:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-19 20:55:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-19 20:55:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-19 20:55:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-19 20:55:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-19 20:55:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-19 20:55:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-19 20:55:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-19 20:55:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-19 20:55:40,884 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-19 20:55:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-19 20:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-19 20:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-19 20:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-19 20:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-19 20:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-19 20:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 20:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 20:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-19 20:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-19 20:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-19 20:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-19 20:55:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-19 20:55:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 20:55:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-19 20:55:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-19 20:55:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-19 20:55:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-19 20:55:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-19 20:55:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-19 20:55:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-19 20:55:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-19 20:55:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-19 20:55:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 20:55:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-19 20:55:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 20:55:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-19 20:55:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-19 20:55:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 20:55:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-19 20:55:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-19 20:55:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-19 20:55:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-19 20:55:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 20:55:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 20:55:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 20:55:41,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 20:55:41,932 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-19 20:55:41,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:55:41 BoogieIcfgContainer [2020-07-19 20:55:41,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 20:55:41,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 20:55:41,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 20:55:41,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 20:55:41,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:55:40" (1/3) ... [2020-07-19 20:55:41,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67836920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:55:41, skipping insertion in model container [2020-07-19 20:55:41,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:55:40" (2/3) ... [2020-07-19 20:55:41,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67836920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:55:41, skipping insertion in model container [2020-07-19 20:55:41,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:55:41" (3/3) ... [2020-07-19 20:55:41,951 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-07-19 20:55:41,962 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 20:55:41,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 20:55:41,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 20:55:42,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 20:55:42,019 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 20:55:42,019 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 20:55:42,019 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 20:55:42,020 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 20:55:42,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 20:55:42,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 20:55:42,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 20:55:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-07-19 20:55:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-19 20:55:42,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:42,070 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 20:55:42,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-07-19 20:55:42,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:42,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586632259] [2020-07-19 20:55:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,751 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:42,854 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 20:55:42,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586632259] [2020-07-19 20:55:42,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:42,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 20:55:42,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126511897] [2020-07-19 20:55:42,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 20:55:42,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 20:55:42,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 20:55:42,887 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-07-19 20:55:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:44,084 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-07-19 20:55:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 20:55:44,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-19 20:55:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:44,103 INFO L225 Difference]: With dead ends: 338 [2020-07-19 20:55:44,103 INFO L226 Difference]: Without dead ends: 182 [2020-07-19 20:55:44,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 20:55:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-07-19 20:55:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-07-19 20:55:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-19 20:55:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-07-19 20:55:44,240 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-07-19 20:55:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:44,240 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-07-19 20:55:44,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 20:55:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-07-19 20:55:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-19 20:55:44,244 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:44,245 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 20:55:44,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 20:55:44,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-07-19 20:55:44,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:44,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371089208] [2020-07-19 20:55:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,573 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:44,613 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 20:55:44,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371089208] [2020-07-19 20:55:44,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:44,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 20:55:44,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612830433] [2020-07-19 20:55:44,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 20:55:44,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 20:55:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 20:55:44,617 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-07-19 20:55:45,006 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:45,907 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-07-19 20:55:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 20:55:45,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-19 20:55:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:45,911 INFO L225 Difference]: With dead ends: 267 [2020-07-19 20:55:45,912 INFO L226 Difference]: Without dead ends: 166 [2020-07-19 20:55:45,913 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 20:55:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-19 20:55:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-07-19 20:55:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-19 20:55:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-07-19 20:55:45,975 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-07-19 20:55:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:45,976 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-07-19 20:55:45,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 20:55:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-07-19 20:55:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-19 20:55:45,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:45,979 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 20:55:45,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 20:55:45,979 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:45,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-07-19 20:55:45,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:45,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193619748] [2020-07-19 20:55:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,285 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:46,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193619748] [2020-07-19 20:55:46,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:46,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 20:55:46,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801260464] [2020-07-19 20:55:46,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:55:46,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:55:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-19 20:55:46,400 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-07-19 20:55:46,739 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:47,064 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-19 20:55:47,301 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:47,527 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:48,820 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-07-19 20:55:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 20:55:48,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-07-19 20:55:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:48,824 INFO L225 Difference]: With dead ends: 280 [2020-07-19 20:55:48,824 INFO L226 Difference]: Without dead ends: 166 [2020-07-19 20:55:48,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-19 20:55:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-19 20:55:48,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-07-19 20:55:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-19 20:55:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-07-19 20:55:48,862 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-07-19 20:55:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:48,863 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-07-19 20:55:48,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:55:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-07-19 20:55:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-19 20:55:48,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:48,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:48,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 20:55:48,866 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:48,867 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-07-19 20:55:48,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:48,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595542800] [2020-07-19 20:55:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,173 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:49,293 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 20:55:49,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595542800] [2020-07-19 20:55:49,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:49,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 20:55:49,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887720011] [2020-07-19 20:55:49,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 20:55:49,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:49,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 20:55:49,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-19 20:55:49,297 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-07-19 20:55:49,607 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:50,729 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:51,470 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-07-19 20:55:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 20:55:51,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-07-19 20:55:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:51,480 INFO L225 Difference]: With dead ends: 383 [2020-07-19 20:55:51,481 INFO L226 Difference]: Without dead ends: 269 [2020-07-19 20:55:51,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-07-19 20:55:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-07-19 20:55:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-07-19 20:55:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-07-19 20:55:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-07-19 20:55:51,580 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-07-19 20:55:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:51,581 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-07-19 20:55:51,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 20:55:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-07-19 20:55:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-19 20:55:51,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:51,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:51,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 20:55:51,588 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-07-19 20:55:51,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:51,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420813024] [2020-07-19 20:55:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:51,946 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:52,083 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 20:55:52,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420813024] [2020-07-19 20:55:52,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:52,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-19 20:55:52,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243456409] [2020-07-19 20:55:52,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 20:55:52,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:52,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 20:55:52,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-19 20:55:52,086 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 11 states. [2020-07-19 20:55:52,769 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:53,001 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:53,221 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:53,880 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:54,109 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-19 20:55:54,354 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:54,591 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:55,624 INFO L93 Difference]: Finished difference Result 470 states and 561 transitions. [2020-07-19 20:55:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:55:55,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-07-19 20:55:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:55,628 INFO L225 Difference]: With dead ends: 470 [2020-07-19 20:55:55,629 INFO L226 Difference]: Without dead ends: 268 [2020-07-19 20:55:55,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-07-19 20:55:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-19 20:55:55,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 231. [2020-07-19 20:55:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-19 20:55:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2020-07-19 20:55:55,677 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 84 [2020-07-19 20:55:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:55,678 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2020-07-19 20:55:55,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 20:55:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2020-07-19 20:55:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-19 20:55:55,679 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:55,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:55,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 20:55:55,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-07-19 20:55:55,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:55,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585209915] [2020-07-19 20:55:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:55,967 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:56,054 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 20:55:56,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585209915] [2020-07-19 20:55:56,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:56,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 20:55:56,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549833314] [2020-07-19 20:55:56,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:55:56,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:56,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:55:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-19 20:55:56,056 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 8 states. [2020-07-19 20:55:56,410 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:57,580 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:57,837 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:58,060 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:58,307 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:58,578 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:59,767 INFO L93 Difference]: Finished difference Result 691 states and 839 transitions. [2020-07-19 20:55:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:55:59,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-07-19 20:55:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:59,772 INFO L225 Difference]: With dead ends: 691 [2020-07-19 20:55:59,772 INFO L226 Difference]: Without dead ends: 484 [2020-07-19 20:55:59,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 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 20:55:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-07-19 20:55:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 417. [2020-07-19 20:55:59,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-19 20:55:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 472 transitions. [2020-07-19 20:55:59,852 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 472 transitions. Word has length 84 [2020-07-19 20:55:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:59,853 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 472 transitions. [2020-07-19 20:55:59,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:55:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 472 transitions. [2020-07-19 20:55:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-19 20:55:59,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:59,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:59,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 20:55:59,856 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:59,856 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-07-19 20:55:59,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:59,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052490908] [2020-07-19 20:55:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:55:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,180 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:56:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:00,337 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 20:56:00,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052490908] [2020-07-19 20:56:00,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:56:00,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:56:00,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189273349] [2020-07-19 20:56:00,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:56:00,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:56:00,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:56:00,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:56:00,346 INFO L87 Difference]: Start difference. First operand 417 states and 472 transitions. Second operand 9 states. [2020-07-19 20:56:00,798 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:56:01,892 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:56:02,131 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:56:02,385 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:56:02,622 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:56:02,854 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:56:03,933 INFO L93 Difference]: Finished difference Result 526 states and 652 transitions. [2020-07-19 20:56:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 20:56:03,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-07-19 20:56:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:56:03,938 INFO L225 Difference]: With dead ends: 526 [2020-07-19 20:56:03,939 INFO L226 Difference]: Without dead ends: 523 [2020-07-19 20:56:03,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-07-19 20:56:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-07-19 20:56:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 417. [2020-07-19 20:56:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-19 20:56:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 471 transitions. [2020-07-19 20:56:04,014 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 471 transitions. Word has length 88 [2020-07-19 20:56:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:56:04,014 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 471 transitions. [2020-07-19 20:56:04,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:56:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 471 transitions. [2020-07-19 20:56:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-19 20:56:04,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:56:04,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:56:04,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 20:56:04,017 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:56:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:56:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash -581525316, now seen corresponding path program 1 times [2020-07-19 20:56:04,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:56:04,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570664341] [2020-07-19 20:56:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:56:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,271 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:56:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:04,402 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 20:56:04,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570664341] [2020-07-19 20:56:04,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:56:04,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-19 20:56:04,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897946060] [2020-07-19 20:56:04,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 20:56:04,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:56:04,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 20:56:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-19 20:56:04,405 INFO L87 Difference]: Start difference. First operand 417 states and 471 transitions. Second operand 11 states. [2020-07-19 20:56:05,108 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:56:05,328 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:05,542 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:06,206 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:06,443 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:06,676 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:56:07,817 INFO L93 Difference]: Finished difference Result 924 states and 1122 transitions. [2020-07-19 20:56:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:56:07,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-07-19 20:56:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:56:07,823 INFO L225 Difference]: With dead ends: 924 [2020-07-19 20:56:07,823 INFO L226 Difference]: Without dead ends: 531 [2020-07-19 20:56:07,825 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 20:56:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-07-19 20:56:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 425. [2020-07-19 20:56:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-19 20:56:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-07-19 20:56:07,924 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-07-19 20:56:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:56:07,925 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-07-19 20:56:07,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 20:56:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-07-19 20:56:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-19 20:56:07,928 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:56:07,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:56:07,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 20:56:07,929 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:56:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:56:07,929 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-07-19 20:56:07,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:56:07,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621754300] [2020-07-19 20:56:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:56:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,189 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:56:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:08,310 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 20:56:08,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621754300] [2020-07-19 20:56:08,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:56:08,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:56:08,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807327120] [2020-07-19 20:56:08,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:56:08,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:56:08,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:56:08,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:56:08,313 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 9 states. [2020-07-19 20:56:09,473 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:56:09,694 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-19 20:56:09,936 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:10,159 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:56:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:56:11,295 INFO L93 Difference]: Finished difference Result 926 states and 1120 transitions. [2020-07-19 20:56:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 20:56:11,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-07-19 20:56:11,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:56:11,300 INFO L225 Difference]: With dead ends: 926 [2020-07-19 20:56:11,300 INFO L226 Difference]: Without dead ends: 525 [2020-07-19 20:56:11,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-19 20:56:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-07-19 20:56:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-07-19 20:56:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-19 20:56:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 477 transitions. [2020-07-19 20:56:11,380 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 477 transitions. Word has length 89 [2020-07-19 20:56:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:56:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 477 transitions. [2020-07-19 20:56:11,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:56:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 477 transitions. [2020-07-19 20:56:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-19 20:56:11,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:56:11,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:56:11,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 20:56:11,383 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:56:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:56:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-07-19 20:56:11,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:56:11,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752481393] [2020-07-19 20:56:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:56:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,661 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:56:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:56:11,790 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 20:56:11,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752481393] [2020-07-19 20:56:11,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:56:11,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 20:56:11,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767693000] [2020-07-19 20:56:11,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 20:56:11,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:56:11,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 20:56:11,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 20:56:11,795 INFO L87 Difference]: Start difference. First operand 425 states and 477 transitions. Second operand 7 states. [2020-07-19 20:56:12,130 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:56:12,612 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:56:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:56:14,878 INFO L93 Difference]: Finished difference Result 1286 states and 1634 transitions. [2020-07-19 20:56:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 20:56:14,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-07-19 20:56:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:56:14,885 INFO L225 Difference]: With dead ends: 1286 [2020-07-19 20:56:14,885 INFO L226 Difference]: Without dead ends: 885 [2020-07-19 20:56:14,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-19 20:56:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-07-19 20:56:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-07-19 20:56:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-07-19 20:56:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 895 transitions. [2020-07-19 20:56:15,023 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 895 transitions. Word has length 89 [2020-07-19 20:56:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:56:15,023 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 895 transitions. [2020-07-19 20:56:15,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 20:56:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 895 transitions. [2020-07-19 20:56:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-19 20:56:15,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:56:15,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:56:15,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 20:56:15,026 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:56:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:56:15,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-07-19 20:56:15,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:56:15,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787990706] [2020-07-19 20:56:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f9ecd87 [2020-07-19 20:56:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 20:56:15,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 20:56:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 20:56:15,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 20:56:15,201 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 20:56:15,201 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 20:56:15,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-19 20:56:15,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:56:15 BoogieIcfgContainer [2020-07-19 20:56:15,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 20:56:15,393 INFO L168 Benchmark]: Toolchain (without parser) took 35286.10 ms. Allocated memory was 138.9 MB in the beginning and 684.7 MB in the end (delta: 545.8 MB). Free memory was 103.1 MB in the beginning and 558.5 MB in the end (delta: -455.4 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. [2020-07-19 20:56:15,398 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 20:56:15,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.91 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 170.6 MB in the end (delta: -67.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-19 20:56:15,399 INFO L168 Benchmark]: Boogie Preprocessor took 88.38 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 166.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-19 20:56:15,400 INFO L168 Benchmark]: RCFGBuilder took 1128.76 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 194.6 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-07-19 20:56:15,402 INFO L168 Benchmark]: TraceAbstraction took 33447.88 ms. Allocated memory was 237.0 MB in the beginning and 684.7 MB in the end (delta: 447.7 MB). Free memory was 194.6 MB in the beginning and 558.5 MB in the end (delta: -363.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-07-19 20:56:15,410 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 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.91 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 170.6 MB in the end (delta: -67.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.38 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 166.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1128.76 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 194.6 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33447.88 ms. Allocated memory was 237.0 MB in the beginning and 684.7 MB in the end (delta: 447.7 MB). Free memory was 194.6 MB in the beginning and 558.5 MB in the end (delta: -363.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=170, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=149, \old(pumpRunning)=138, \old(systemActive)=137, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] 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] [L126] 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] [L127] 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] [L128] 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] [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] 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] [L128] 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] [L128] tmp = valid_product() [L130] 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] [L132] 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] [L133] 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] [L112] 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] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] 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] [L155] 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] [L157] 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] [L163] tmp = __VERIFIER_nondet_int() [L165] 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] [L167] 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] [L907] COND TRUE waterLevel < 2 [L908] 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] [L167] 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] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] 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=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L177] CALL changeMethaneLevel() 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] [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L177] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=1, tmp___2=0, waterLevel=2] [L200] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L246] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L336] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L292] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L310] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L969] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L421] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L271] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L275] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L346] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L275] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L310] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L336] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L246] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L252] 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=1, pumpRunning=1, systemActive=1, waterLevel=2] [L497] int tmp ; [L498] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L502] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L506] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L510] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L216] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1331 SDtfs, 2192 SDslu, 1439 SDs, 0 SdLazy, 6716 SolverSat, 1455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 670 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 831 NumberOfCodeBlocks, 831 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 230433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...