/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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:04:40,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:04:40,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:04:40,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:04:40,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:04:40,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:04:40,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:04:40,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:04:40,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:04:40,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:04:40,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:04:40,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:04:40,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:04:40,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:04:40,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:04:40,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:04:40,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:04:40,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:04:40,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:04:40,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:04:40,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:04:40,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:04:40,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:04:40,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:04:40,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:04:40,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:04:40,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:04:40,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:04:40,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:04:40,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:04:40,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:04:40,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:04:40,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:04:40,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:04:40,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:04:40,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:04:40,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:04:40,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:04:40,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:04:40,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:04:40,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:04:40,843 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 22:04:40,858 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:04:40,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:04:40,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:04:40,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:04:40,860 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:04:40,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:04:40,861 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:04:40,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:04:40,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:04:40,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:04:40,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:04:40,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:04:40,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:04:40,862 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:04:40,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:04:40,862 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:04:40,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:04:40,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:04:40,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:04:40,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:04:40,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:04:40,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:40,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:04:40,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:04:40,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:04:40,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:04:40,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:04:40,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:04:40,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:04:41,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:04:41,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:04:41,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:04:41,160 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:04:41,160 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:04:41,161 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-11-06 22:04:41,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c890dae/5b8c436ca4694030b32bc0e19441efd8/FLAG392bb4797 [2019-11-06 22:04:41,779 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:04:41,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-11-06 22:04:41,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c890dae/5b8c436ca4694030b32bc0e19441efd8/FLAG392bb4797 [2019-11-06 22:04:42,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c890dae/5b8c436ca4694030b32bc0e19441efd8 [2019-11-06 22:04:42,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:04:42,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:04:42,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:42,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:04:42,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:04:42,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42, skipping insertion in model container [2019-11-06 22:04:42,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,108 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:04:42,171 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:04:42,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:42,627 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:04:42,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:42,754 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:04:42,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42 WrapperNode [2019-11-06 22:04:42,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:42,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:04:42,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:04:42,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:04:42,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (1/1) ... [2019-11-06 22:04:42,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:04:42,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:04:42,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:04:42,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:04:42,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (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 22:04:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:04:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:04:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:04:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:04:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:04:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:04:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:04:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:04:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:04:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:04:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:04:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:04:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:04:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:04:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:04:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:04:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:04:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:04:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:04:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:04:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:04:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:04:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:04:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:04:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:04:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:04:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:04:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:04:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:04:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:04:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:04:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:04:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:04:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:04:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:04:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:04:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:04:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:04:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:04:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:04:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:04:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:04:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:04:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:04:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:04:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:04:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:04:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:04:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:04:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:04:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:04:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:04:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:04:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:04:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:04:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:04:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:04:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:04:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:04:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:04:44,110 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:04:44,110 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:04:44,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:44 BoogieIcfgContainer [2019-11-06 22:04:44,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:04:44,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:04:44,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:04:44,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:04:44,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:42" (1/3) ... [2019-11-06 22:04:44,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9d266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:44, skipping insertion in model container [2019-11-06 22:04:44,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:42" (2/3) ... [2019-11-06 22:04:44,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9d266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:44, skipping insertion in model container [2019-11-06 22:04:44,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:44" (3/3) ... [2019-11-06 22:04:44,120 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2019-11-06 22:04:44,130 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:04:44,138 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:04:44,149 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:04:44,176 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:04:44,176 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:04:44,176 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:04:44,176 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:04:44,177 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:04:44,177 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:04:44,177 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:04:44,177 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:04:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-11-06 22:04:44,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:04:44,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:44,211 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 22:04:44,213 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:44,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2019-11-06 22:04:44,228 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:44,228 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097300446] [2019-11-06 22:04:44,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,949 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,066 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 22:04:45,072 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097300446] [2019-11-06 22:04:45,073 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:45,073 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:04:45,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831012985] [2019-11-06 22:04:45,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:04:45,082 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:45,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:04:45,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:45,099 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2019-11-06 22:04:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:46,450 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2019-11-06 22:04:46,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:04:46,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:04:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:46,480 INFO L225 Difference]: With dead ends: 365 [2019-11-06 22:04:46,481 INFO L226 Difference]: Without dead ends: 197 [2019-11-06 22:04:46,488 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 22:04:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-11-06 22:04:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2019-11-06 22:04:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-06 22:04:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2019-11-06 22:04:46,646 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2019-11-06 22:04:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:46,647 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2019-11-06 22:04:46,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:04:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2019-11-06 22:04:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:04:46,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:46,651 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 22:04:46,652 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:46,652 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2019-11-06 22:04:46,652 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:46,653 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163832113] [2019-11-06 22:04:46,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,036 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:47,069 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 22:04:47,069 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163832113] [2019-11-06 22:04:47,069 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:47,070 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:04:47,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702273263] [2019-11-06 22:04:47,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:04:47,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:47,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:04:47,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:04:47,073 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2019-11-06 22:04:47,550 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:48,748 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2019-11-06 22:04:48,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:48,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:04:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:48,752 INFO L225 Difference]: With dead ends: 292 [2019-11-06 22:04:48,753 INFO L226 Difference]: Without dead ends: 181 [2019-11-06 22:04:48,755 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 22:04:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-11-06 22:04:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2019-11-06 22:04:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-06 22:04:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2019-11-06 22:04:48,796 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2019-11-06 22:04:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:48,797 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2019-11-06 22:04:48,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:04:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2019-11-06 22:04:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:04:48,799 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:48,800 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] [2019-11-06 22:04:48,800 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2019-11-06 22:04:48,800 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:48,801 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386332062] [2019-11-06 22:04:48,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,187 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,318 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 22:04:49,318 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386332062] [2019-11-06 22:04:49,318 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:49,319 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:04:49,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269890491] [2019-11-06 22:04:49,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:49,320 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:04:49,320 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2019-11-06 22:04:49,760 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:50,111 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:50,395 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:50,695 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:51,536 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:54,174 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2019-11-06 22:04:54,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:04:54,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 22:04:54,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:54,180 INFO L225 Difference]: With dead ends: 510 [2019-11-06 22:04:54,181 INFO L226 Difference]: Without dead ends: 384 [2019-11-06 22:04:54,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:04:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2019-11-06 22:04:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2019-11-06 22:04:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-11-06 22:04:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2019-11-06 22:04:54,268 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2019-11-06 22:04:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:54,268 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2019-11-06 22:04:54,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2019-11-06 22:04:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:04:54,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:54,271 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 22:04:54,272 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2019-11-06 22:04:54,272 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:54,273 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354362524] [2019-11-06 22:04:54,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,616 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,773 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 22:04:54,773 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354362524] [2019-11-06 22:04:54,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:54,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:04:54,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411544177] [2019-11-06 22:04:54,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:04:54,775 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:04:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:54,777 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2019-11-06 22:04:55,358 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:55,726 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:56,004 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:56,290 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:56,920 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:57,884 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:58,347 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:58,738 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:59,020 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:59,362 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:59,780 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:00,206 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:00,687 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:05:03,317 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2019-11-06 22:05:03,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:05:03,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-11-06 22:05:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:05:03,328 INFO L225 Difference]: With dead ends: 1305 [2019-11-06 22:05:03,328 INFO L226 Difference]: Without dead ends: 1011 [2019-11-06 22:05:03,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:05:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2019-11-06 22:05:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2019-11-06 22:05:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-11-06 22:05:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2019-11-06 22:05:03,576 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2019-11-06 22:05:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:05:03,576 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2019-11-06 22:05:03,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:05:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2019-11-06 22:05:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 22:05:03,580 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:05:03,580 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 22:05:03,581 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:05:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:05:03,581 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2019-11-06 22:05:03,581 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:05:03,582 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255332546] [2019-11-06 22:05:03,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:05:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,880 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:05:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:03,951 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 22:05:03,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255332546] [2019-11-06 22:05:03,952 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:05:03,952 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:05:03,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906092019] [2019-11-06 22:05:03,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:05:03,955 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:05:03,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:05:03,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:05:03,955 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2019-11-06 22:05:04,339 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:05:06,373 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2019-11-06 22:05:06,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:05:06,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-11-06 22:05:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:05:06,382 INFO L225 Difference]: With dead ends: 2165 [2019-11-06 22:05:06,382 INFO L226 Difference]: Without dead ends: 1279 [2019-11-06 22:05:06,386 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 22:05:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2019-11-06 22:05:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2019-11-06 22:05:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2019-11-06 22:05:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2019-11-06 22:05:06,615 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2019-11-06 22:05:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:05:06,616 INFO L462 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2019-11-06 22:05:06,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:05:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2019-11-06 22:05:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:05:06,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:05:06,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:06,619 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:05:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:05:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2019-11-06 22:05:06,620 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:05:06,620 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514567316] [2019-11-06 22:05:06,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:05:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,911 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:05:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:05:07,038 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514567316] [2019-11-06 22:05:07,039 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582236427] [2019-11-06 22:05:07,039 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 22:05:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:07,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:05:07,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:05:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:05:07,388 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:05:07,389 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-11-06 22:05:07,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182398704] [2019-11-06 22:05:07,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-06 22:05:07,390 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:05:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-06 22:05:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:05:07,391 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 15 states. [2019-11-06 22:05:07,905 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:08,648 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:09,416 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:11,241 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:05:11,690 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:13,141 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:13,505 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:13,988 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:15,010 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:15,441 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:15,744 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:16,045 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:16,469 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:16,804 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:17,629 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:17,974 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:18,343 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:18,579 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:05:19,004 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:19,310 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:19,754 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:20,032 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:20,526 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:20,821 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:21,238 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:21,533 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190