java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:38:44,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:38:44,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:38:44,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:38:44,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:38:44,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:38:44,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:38:44,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:38:44,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:38:44,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:38:44,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:38:44,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:38:44,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:38:44,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:38:44,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:38:44,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:38:44,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:38:44,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:38:44,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:38:44,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:38:44,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:38:44,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:38:44,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:38:44,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:38:44,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:38:44,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:38:44,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:38:44,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:38:44,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:38:44,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:38:44,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:38:44,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:38:44,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:38:44,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:38:44,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:38:44,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:38:44,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:38:44,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:38:44,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:38:44,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:38:44,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:38:44,776 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 [2019-10-14 23:38:44,793 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:38:44,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:38:44,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:38:44,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:38:44,795 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:38:44,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:38:44,795 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:38:44,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:38:44,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:38:44,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:38:44,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:38:44,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:38:44,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:38:44,800 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:38:44,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:38:44,800 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:38:44,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:38:44,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:38:44,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:38:44,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:38:44,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:38:44,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:38:44,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:38:44,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:38:44,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:38:44,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:38:44,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:38:44,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:38:44,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:38:45,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:38:45,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:38:45,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:38:45,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:38:45,087 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:38:45,088 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-10-14 23:38:45,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d69da16/1993ed8aa2e945eaa2c271a908cbcf55/FLAG437152d78 [2019-10-14 23:38:45,697 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:38:45,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-10-14 23:38:45,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d69da16/1993ed8aa2e945eaa2c271a908cbcf55/FLAG437152d78 [2019-10-14 23:38:45,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d69da16/1993ed8aa2e945eaa2c271a908cbcf55 [2019-10-14 23:38:46,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:38:46,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:38:46,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:46,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:38:46,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:38:46,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:46,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a202d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46, skipping insertion in model container [2019-10-14 23:38:46,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:46,023 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:38:46,075 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:38:46,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:46,594 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:38:46,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:46,726 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:38:46,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46 WrapperNode [2019-10-14 23:38:46,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:46,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:38:46,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:38:46,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:38:46,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (1/1) ... [2019-10-14 23:38:46,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:38:46,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:38:46,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:38:46,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:38:46,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (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 [2019-10-14 23:38:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:38:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:38:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:38:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:38:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:38:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:38:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:38:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:38:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:38:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:38:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:38:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:38:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:38:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:38:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:38:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:38:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:38:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:38:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:38:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:38:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:38:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:38:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:38:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:38:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:38:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:38:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:38:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:38:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:38:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:38:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:38:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:38:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:38:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:38:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:38:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:38:46,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:38:46,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:38:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:38:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:38:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:38:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:38:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:38:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:38:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:38:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:38:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:38:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:38:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:38:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:38:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:38:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:38:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:38:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:38:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:38:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:38:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:38:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:38:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:38:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:38:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:38:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:38:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:38:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:38:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:38:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:38:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:38:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:38:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:38:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:38:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:38:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:38:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:38:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:38:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:38:48,138 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:38:48,139 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:38:48,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:48 BoogieIcfgContainer [2019-10-14 23:38:48,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:38:48,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:38:48,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:38:48,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:38:48,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:45" (1/3) ... [2019-10-14 23:38:48,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75848b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:48, skipping insertion in model container [2019-10-14 23:38:48,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:46" (2/3) ... [2019-10-14 23:38:48,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75848b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:48, skipping insertion in model container [2019-10-14 23:38:48,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:48" (3/3) ... [2019-10-14 23:38:48,151 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2019-10-14 23:38:48,161 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:38:48,173 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:38:48,184 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:38:48,223 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:38:48,223 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:38:48,223 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:38:48,223 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:38:48,224 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:38:48,224 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:38:48,224 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:38:48,224 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:38:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2019-10-14 23:38:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:38:48,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:48,264 INFO L380 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] [2019-10-14 23:38:48,266 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:48,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1116469353, now seen corresponding path program 1 times [2019-10-14 23:38:48,282 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:48,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775159812] [2019-10-14 23:38:48,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:48,283 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:48,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,950 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:49,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775159812] [2019-10-14 23:38:49,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:49,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:38:49,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522925935] [2019-10-14 23:38:49,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:38:49,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:49,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:38:49,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:49,103 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 3 states. [2019-10-14 23:38:50,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:50,444 INFO L93 Difference]: Finished difference Result 349 states and 454 transitions. [2019-10-14 23:38:50,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:38:50,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:38:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:50,465 INFO L225 Difference]: With dead ends: 349 [2019-10-14 23:38:50,466 INFO L226 Difference]: Without dead ends: 188 [2019-10-14 23:38:50,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-10-14 23:38:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 152. [2019-10-14 23:38:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-10-14 23:38:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2019-10-14 23:38:50,579 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 46 [2019-10-14 23:38:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:50,580 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2019-10-14 23:38:50,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:38:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2019-10-14 23:38:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:38:50,591 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:50,592 INFO L380 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] [2019-10-14 23:38:50,592 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1310027705, now seen corresponding path program 1 times [2019-10-14 23:38:50,594 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:50,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274539795] [2019-10-14 23:38:50,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:50,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:50,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,022 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:51,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274539795] [2019-10-14 23:38:51,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:51,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:38:51,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726175548] [2019-10-14 23:38:51,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:38:51,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:51,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:38:51,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:38:51,060 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2019-10-14 23:38:51,666 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:52,734 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2019-10-14 23:38:52,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:38:52,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:38:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:52,744 INFO L225 Difference]: With dead ends: 276 [2019-10-14 23:38:52,744 INFO L226 Difference]: Without dead ends: 172 [2019-10-14 23:38:52,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:38:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-14 23:38:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 143. [2019-10-14 23:38:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-10-14 23:38:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-10-14 23:38:52,787 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2019-10-14 23:38:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:52,787 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-10-14 23:38:52,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:38:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-10-14 23:38:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:38:52,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:52,789 INFO L380 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] [2019-10-14 23:38:52,789 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:52,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2059448103, now seen corresponding path program 1 times [2019-10-14 23:38:52,790 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:52,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588637898] [2019-10-14 23:38:52,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:52,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:52,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,126 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:53,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588637898] [2019-10-14 23:38:53,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:53,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:38:53,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473005021] [2019-10-14 23:38:53,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:38:53,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:38:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:38:53,230 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 8 states. [2019-10-14 23:38:53,695 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:54,057 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:54,327 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:54,587 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:55,399 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:57,755 INFO L93 Difference]: Finished difference Result 485 states and 602 transitions. [2019-10-14 23:38:57,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:38:57,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-14 23:38:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:57,761 INFO L225 Difference]: With dead ends: 485 [2019-10-14 23:38:57,761 INFO L226 Difference]: Without dead ends: 366 [2019-10-14 23:38:57,763 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:38:57,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-14 23:38:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 304. [2019-10-14 23:38:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-10-14 23:38:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2019-10-14 23:38:57,847 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 51 [2019-10-14 23:38:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:57,847 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2019-10-14 23:38:57,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:38:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2019-10-14 23:38:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:38:57,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:57,850 INFO L380 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] [2019-10-14 23:38:57,850 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:57,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:57,851 INFO L82 PathProgramCache]: Analyzing trace with hash -535477179, now seen corresponding path program 1 times [2019-10-14 23:38:57,851 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:57,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231076046] [2019-10-14 23:38:57,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:57,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:57,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,201 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:58,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231076046] [2019-10-14 23:38:58,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:58,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:38:58,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151931062] [2019-10-14 23:38:58,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:38:58,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:58,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:38:58,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:38:58,321 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 12 states. [2019-10-14 23:38:59,085 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:59,466 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:59,734 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:00,012 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:00,602 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:01,589 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:02,013 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:02,424 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:02,698 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:03,018 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:03,428 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:03,886 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:04,345 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:06,753 INFO L93 Difference]: Finished difference Result 1237 states and 1698 transitions. [2019-10-14 23:39:06,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:06,756 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-14 23:39:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:06,765 INFO L225 Difference]: With dead ends: 1237 [2019-10-14 23:39:06,765 INFO L226 Difference]: Without dead ends: 957 [2019-10-14 23:39:06,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2019-10-14 23:39:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 860. [2019-10-14 23:39:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-10-14 23:39:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1102 transitions. [2019-10-14 23:39:06,979 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1102 transitions. Word has length 57 [2019-10-14 23:39:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:06,980 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 1102 transitions. [2019-10-14 23:39:06,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1102 transitions. [2019-10-14 23:39:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:39:06,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:06,984 INFO L380 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] [2019-10-14 23:39:06,984 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1450049621, now seen corresponding path program 1 times [2019-10-14 23:39:06,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:06,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112392719] [2019-10-14 23:39:06,985 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:06,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:06,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,301 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:07,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112392719] [2019-10-14 23:39:07,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:07,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:07,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989528449] [2019-10-14 23:39:07,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:07,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:07,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:07,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:07,402 INFO L87 Difference]: Start difference. First operand 860 states and 1102 transitions. Second operand 6 states. [2019-10-14 23:39:07,810 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:09,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:09,798 INFO L93 Difference]: Finished difference Result 2013 states and 2775 transitions. [2019-10-14 23:39:09,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:39:09,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-14 23:39:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:09,809 INFO L225 Difference]: With dead ends: 2013 [2019-10-14 23:39:09,809 INFO L226 Difference]: Without dead ends: 1177 [2019-10-14 23:39:09,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2019-10-14 23:39:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1090. [2019-10-14 23:39:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2019-10-14 23:39:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1378 transitions. [2019-10-14 23:39:10,046 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1378 transitions. Word has length 61 [2019-10-14 23:39:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:10,046 INFO L462 AbstractCegarLoop]: Abstraction has 1090 states and 1378 transitions. [2019-10-14 23:39:10,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1378 transitions. [2019-10-14 23:39:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:39:10,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:10,051 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:10,051 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:10,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2144996460, now seen corresponding path program 1 times [2019-10-14 23:39:10,052 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:10,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444669835] [2019-10-14 23:39:10,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:10,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:10,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,400 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:10,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444669835] [2019-10-14 23:39:10,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053482154] [2019-10-14 23:39:10,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:39:10,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:39:10,962 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:10,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-14 23:39:10,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836854788] [2019-10-14 23:39:10,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:39:10,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:10,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:39:10,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:10,964 INFO L87 Difference]: Start difference. First operand 1090 states and 1378 transitions. Second operand 15 states. [2019-10-14 23:39:11,639 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,378 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:13,282 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:14,585 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:14,958 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:16,478 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:16,793 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:17,361 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:18,582 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:18,996 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:19,306 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:19,600 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:19,998 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:20,365 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:20,947 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:21,358 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:21,605 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:21,999 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:22,511 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:23,007 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:23,317 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:23,641 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:24,401 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:24,777 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:25,058 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:25,532 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:25,853 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189