/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:04:04,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:04:04,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:04:04,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:04:04,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:04:04,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:04:04,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:04:04,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:04:04,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:04:04,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:04:04,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:04:04,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:04:04,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:04:04,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:04:04,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:04:04,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:04:04,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:04:04,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:04:04,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:04:04,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:04:04,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:04:04,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:04:04,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:04:04,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:04:04,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:04:04,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:04:04,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:04:04,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:04:04,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:04:04,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:04:04,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:04:04,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:04:04,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:04:04,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:04:04,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:04:04,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:04:04,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:04:04,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:04:04,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:04:04,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:04:04,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:04:04,846 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 [2019-11-06 22:04:04,859 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:04:04,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:04:04,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:04:04,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:04:04,861 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:04:04,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:04:04,862 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:04:04,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:04:04,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:04:04,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:04:04,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:04:04,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:04:04,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:04:04,863 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:04:04,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:04:04,864 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:04:04,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:04:04,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:04:04,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:04:04,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:04:04,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:04:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:04,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:04:04,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:04:04,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:04:04,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:04:04,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:04:04,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:04:04,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:04:05,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:04:05,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:04:05,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:04:05,163 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:04:05,163 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:04:05,164 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2019-11-06 22:04:05,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb6c72c0/42a2c3c8c72d4680b42d0ea3a699b394/FLAG83bf9c8cd [2019-11-06 22:04:05,776 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:04:05,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2019-11-06 22:04:05,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb6c72c0/42a2c3c8c72d4680b42d0ea3a699b394/FLAG83bf9c8cd [2019-11-06 22:04:06,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb6c72c0/42a2c3c8c72d4680b42d0ea3a699b394 [2019-11-06 22:04:06,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:04:06,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:04:06,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:06,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:04:06,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:04:06,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79188b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06, skipping insertion in model container [2019-11-06 22:04:06,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,054 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:04:06,116 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:04:06,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:06,564 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:04:06,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:06,676 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:04:06,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06 WrapperNode [2019-11-06 22:04:06,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:06,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:04:06,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:04:06,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:04:06,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2019-11-06 22:04:06,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:04:06,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:04:06,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:04:06,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:04:06,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (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 [2019-11-06 22:04:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:04:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:04:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:04:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:04:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:04:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:04:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:04:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:04:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:04:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:04:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:04:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:04:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:04:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:04:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:04:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:04:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:04:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:04:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:04:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:04:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:04:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:04:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:04:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:04:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:04:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:04:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:04:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:04:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:04:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:04:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:04:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:04:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:04:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:04:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:04:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:04:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:04:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:04:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:04:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:04:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:04:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:04:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:04:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:04:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:04:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:04:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:04:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:04:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:04:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:04:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:04:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:04:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:04:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:04:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:04:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:04:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:04:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:04:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:04:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:04:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:04:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:04:08,122 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:04:08,123 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:04:08,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:08 BoogieIcfgContainer [2019-11-06 22:04:08,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:04:08,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:04:08,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:04:08,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:04:08,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:06" (1/3) ... [2019-11-06 22:04:08,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c0f64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:08, skipping insertion in model container [2019-11-06 22:04:08,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (2/3) ... [2019-11-06 22:04:08,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c0f64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:08, skipping insertion in model container [2019-11-06 22:04:08,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:08" (3/3) ... [2019-11-06 22:04:08,134 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product56.cil.c [2019-11-06 22:04:08,143 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:04:08,152 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:04:08,163 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:04:08,200 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:04:08,200 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:04:08,200 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:04:08,200 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:04:08,201 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:04:08,201 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:04:08,201 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:04:08,201 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:04:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-11-06 22:04:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:04:08,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:08,233 INFO L410 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] [2019-11-06 22:04:08,235 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:08,241 INFO L82 PathProgramCache]: Analyzing trace with hash -559348317, now seen corresponding path program 1 times [2019-11-06 22:04:08,250 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:08,250 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870763477] [2019-11-06 22:04:08,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:08,947 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:09,064 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870763477] [2019-11-06 22:04:09,065 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:09,065 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:04:09,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893408831] [2019-11-06 22:04:09,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:04:09,074 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:04:09,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:09,093 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2019-11-06 22:04:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:10,410 INFO L93 Difference]: Finished difference Result 358 states and 464 transitions. [2019-11-06 22:04:10,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:04:10,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:04:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:10,427 INFO L225 Difference]: With dead ends: 358 [2019-11-06 22:04:10,428 INFO L226 Difference]: Without dead ends: 193 [2019-11-06 22:04:10,433 INFO L630 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 [2019-11-06 22:04:10,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-06 22:04:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2019-11-06 22:04:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-06 22:04:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2019-11-06 22:04:10,543 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 46 [2019-11-06 22:04:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:10,544 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2019-11-06 22:04:10,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:04:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2019-11-06 22:04:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:04:10,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:10,556 INFO L410 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] [2019-11-06 22:04:10,556 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1620740414, now seen corresponding path program 1 times [2019-11-06 22:04:10,557 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:10,557 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378550757] [2019-11-06 22:04:10,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,944 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:10,981 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378550757] [2019-11-06 22:04:10,981 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:10,981 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:04:10,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864911400] [2019-11-06 22:04:10,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:04:10,984 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:04:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:04:10,985 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 4 states. [2019-11-06 22:04:11,437 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:12,511 INFO L93 Difference]: Finished difference Result 281 states and 343 transitions. [2019-11-06 22:04:12,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:12,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:04:12,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:12,516 INFO L225 Difference]: With dead ends: 281 [2019-11-06 22:04:12,516 INFO L226 Difference]: Without dead ends: 177 [2019-11-06 22:04:12,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:04:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-06 22:04:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147. [2019-11-06 22:04:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-06 22:04:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2019-11-06 22:04:12,584 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 47 [2019-11-06 22:04:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:12,584 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2019-11-06 22:04:12,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:04:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2019-11-06 22:04:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:04:12,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:12,586 INFO L410 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] [2019-11-06 22:04:12,587 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -396868600, now seen corresponding path program 1 times [2019-11-06 22:04:12,587 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:12,588 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698211107] [2019-11-06 22:04:12,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:12,920 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:13,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698211107] [2019-11-06 22:04:13,025 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:13,025 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:04:13,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757209412] [2019-11-06 22:04:13,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:13,026 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:13,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:04:13,027 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 8 states. [2019-11-06 22:04:13,469 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:13,877 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:14,161 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:14,431 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:15,308 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:17,882 INFO L93 Difference]: Finished difference Result 500 states and 619 transitions. [2019-11-06 22:04:17,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:04:17,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-11-06 22:04:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:17,888 INFO L225 Difference]: With dead ends: 500 [2019-11-06 22:04:17,888 INFO L226 Difference]: Without dead ends: 377 [2019-11-06 22:04:17,890 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:04:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-11-06 22:04:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 308. [2019-11-06 22:04:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-11-06 22:04:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 372 transitions. [2019-11-06 22:04:17,996 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 372 transitions. Word has length 52 [2019-11-06 22:04:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:17,997 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 372 transitions. [2019-11-06 22:04:17,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 372 transitions. [2019-11-06 22:04:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:04:17,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:17,999 INFO L410 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] [2019-11-06 22:04:17,999 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:18,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1317156286, now seen corresponding path program 1 times [2019-11-06 22:04:18,000 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:18,000 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808845299] [2019-11-06 22:04:18,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,477 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:18,577 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808845299] [2019-11-06 22:04:18,577 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:18,578 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:04:18,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19878808] [2019-11-06 22:04:18,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:04:18,579 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:18,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:04:18,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:18,579 INFO L87 Difference]: Start difference. First operand 308 states and 372 transitions. Second operand 12 states. [2019-11-06 22:04:19,077 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:19,420 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:19,720 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:19,998 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:20,613 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:21,520 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:21,934 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:22,300 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:22,581 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:22,950 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:23,349 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:23,749 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:24,190 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:26,760 INFO L93 Difference]: Finished difference Result 1257 states and 1722 transitions. [2019-11-06 22:04:26,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:04:26,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-11-06 22:04:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:26,770 INFO L225 Difference]: With dead ends: 1257 [2019-11-06 22:04:26,770 INFO L226 Difference]: Without dead ends: 973 [2019-11-06 22:04:26,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:04:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-11-06 22:04:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 872. [2019-11-06 22:04:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2019-11-06 22:04:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1114 transitions. [2019-11-06 22:04:26,962 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1114 transitions. Word has length 57 [2019-11-06 22:04:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:26,963 INFO L462 AbstractCegarLoop]: Abstraction has 872 states and 1114 transitions. [2019-11-06 22:04:26,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:04:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1114 transitions. [2019-11-06 22:04:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 22:04:26,966 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:26,966 INFO L410 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] [2019-11-06 22:04:26,966 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1811637144, now seen corresponding path program 1 times [2019-11-06 22:04:26,967 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:26,967 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302868257] [2019-11-06 22:04:26,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,258 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:27,376 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302868257] [2019-11-06 22:04:27,376 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:27,377 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:04:27,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360243294] [2019-11-06 22:04:27,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:27,379 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:27,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:27,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:04:27,381 INFO L87 Difference]: Start difference. First operand 872 states and 1114 transitions. Second operand 6 states. [2019-11-06 22:04:27,706 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:29,910 INFO L93 Difference]: Finished difference Result 2053 states and 2819 transitions. [2019-11-06 22:04:29,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:04:29,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-11-06 22:04:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:29,919 INFO L225 Difference]: With dead ends: 2053 [2019-11-06 22:04:29,919 INFO L226 Difference]: Without dead ends: 1205 [2019-11-06 22:04:29,923 INFO L630 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 [2019-11-06 22:04:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-11-06 22:04:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1114. [2019-11-06 22:04:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2019-11-06 22:04:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1402 transitions. [2019-11-06 22:04:30,162 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1402 transitions. Word has length 61 [2019-11-06 22:04:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:30,163 INFO L462 AbstractCegarLoop]: Abstraction has 1114 states and 1402 transitions. [2019-11-06 22:04:30,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1402 transitions. [2019-11-06 22:04:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:04:30,166 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:30,166 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:30,166 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:30,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1078445760, now seen corresponding path program 1 times [2019-11-06 22:04:30,167 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:30,167 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932893223] [2019-11-06 22:04:30,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,449 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 22:04:30,598 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932893223] [2019-11-06 22:04:30,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708165913] [2019-11-06 22:04:30,608 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 [2019-11-06 22:04:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:04:30,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:04:30,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:30,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-11-06 22:04:30,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918704238] [2019-11-06 22:04:30,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-06 22:04:30,962 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-06 22:04:30,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:30,963 INFO L87 Difference]: Start difference. First operand 1114 states and 1402 transitions. Second operand 15 states. [2019-11-06 22:04:31,544 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:32,444 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:33,290 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:34,459 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:34,828 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:36,531 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:36,828 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:37,503 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:38,603 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:39,024 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:39,328 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:39,699 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:40,125 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:40,466 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:41,074 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:41,512 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:41,755 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:42,175 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:42,689 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:43,213 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:43,530 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:43,842 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:44,535 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:44,873 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:45,135 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:45,570 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:45,867 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189