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_spec1_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:34:42,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:34:42,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:34:42,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:34:42,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:34:42,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:34:42,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:34:42,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:34:42,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:34:42,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:34:42,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:34:42,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:34:42,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:34:42,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:34:42,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:34:42,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:34:42,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:34:42,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:34:42,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:34:42,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:34:42,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:34:42,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:34:42,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:34:42,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:34:42,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:34:42,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:34:42,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:34:42,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:34:42,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:34:42,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:34:42,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:34:42,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:34:42,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:34:42,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:34:42,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:34:42,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:34:42,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:34:42,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:34:42,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:34:42,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:34:42,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:34:42,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:34:42,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:34:42,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:34:42,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:34:42,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:34:42,825 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:34:42,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:34:42,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:34:42,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:34:42,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:34:42,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:34:42,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:34:42,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:34:42,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:34:42,827 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:34:42,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:34:42,827 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:34:42,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:34:42,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:34:42,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:34:42,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:34:42,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:34:42,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:42,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:34:42,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:34:42,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:34:42,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:34:42,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:34:42,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:34:42,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:34:43,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:34:43,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:34:43,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:34:43,121 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:34:43,122 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:34:43,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2019-10-13 19:34:43,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35098bae4/26d9b55d407b4c0f991acd86c2ed5aab/FLAG68ecfab49 [2019-10-13 19:34:43,749 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:34:43,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2019-10-13 19:34:43,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35098bae4/26d9b55d407b4c0f991acd86c2ed5aab/FLAG68ecfab49 [2019-10-13 19:34:44,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35098bae4/26d9b55d407b4c0f991acd86c2ed5aab [2019-10-13 19:34:44,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:34:44,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:34:44,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:44,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:34:44,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:34:44,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f16bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44, skipping insertion in model container [2019-10-13 19:34:44,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,083 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:34:44,132 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:34:44,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:44,775 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:34:44,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:44,884 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:34:44,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44 WrapperNode [2019-10-13 19:34:44,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:44,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:34:44,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:34:44,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:34:44,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... [2019-10-13 19:34:44,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:34:44,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:34:44,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:34:44,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:34:44,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:34:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:34:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:34:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:34:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:34:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:34:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:34:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:34:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:34:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:34:45,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:45,036 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:34:45,036 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:34:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:34:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:34:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:34:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:34:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:34:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:34:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:34:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:34:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:34:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:34:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:34:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:34:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:34:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:34:46,177 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:34:46,177 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:34:46,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:46 BoogieIcfgContainer [2019-10-13 19:34:46,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:34:46,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:34:46,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:34:46,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:34:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:34:44" (1/3) ... [2019-10-13 19:34:46,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2423ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:46, skipping insertion in model container [2019-10-13 19:34:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:44" (2/3) ... [2019-10-13 19:34:46,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2423ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:46, skipping insertion in model container [2019-10-13 19:34:46,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:46" (3/3) ... [2019-10-13 19:34:46,188 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2019-10-13 19:34:46,198 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:34:46,207 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:34:46,219 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:34:46,247 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:34:46,247 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:34:46,247 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:34:46,248 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:34:46,248 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:34:46,248 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:34:46,248 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:34:46,248 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:34:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2019-10-13 19:34:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:34:46,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:46,282 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:46,284 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:46,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1763081390, now seen corresponding path program 1 times [2019-10-13 19:34:46,299 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:46,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891123144] [2019-10-13 19:34:46,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:46,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:46,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,007 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:47,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891123144] [2019-10-13 19:34:47,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:47,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:34:47,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697741616] [2019-10-13 19:34:47,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:34:47,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:47,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:34:47,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:47,138 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2019-10-13 19:34:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:48,432 INFO L93 Difference]: Finished difference Result 303 states and 398 transitions. [2019-10-13 19:34:48,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:34:48,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:34:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:48,449 INFO L225 Difference]: With dead ends: 303 [2019-10-13 19:34:48,450 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 19:34:48,455 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:48,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 19:34:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2019-10-13 19:34:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 19:34:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2019-10-13 19:34:48,548 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 46 [2019-10-13 19:34:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:48,549 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2019-10-13 19:34:48,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:34:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2019-10-13 19:34:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:34:48,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:48,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:48,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1948835968, now seen corresponding path program 1 times [2019-10-13 19:34:48,554 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:48,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988592953] [2019-10-13 19:34:48,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:48,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:48,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,008 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:49,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988592953] [2019-10-13 19:34:49,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:49,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:34:49,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056714827] [2019-10-13 19:34:49,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:34:49,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:49,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:34:49,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:34:49,052 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 4 states. [2019-10-13 19:34:49,541 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:50,423 INFO L93 Difference]: Finished difference Result 236 states and 289 transitions. [2019-10-13 19:34:50,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:34:50,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:34:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:50,432 INFO L225 Difference]: With dead ends: 236 [2019-10-13 19:34:50,432 INFO L226 Difference]: Without dead ends: 148 [2019-10-13 19:34:50,437 INFO L600 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 [2019-10-13 19:34:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-13 19:34:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2019-10-13 19:34:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-13 19:34:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2019-10-13 19:34:50,490 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 47 [2019-10-13 19:34:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:50,490 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2019-10-13 19:34:50,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:34:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2019-10-13 19:34:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:34:50,499 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:50,499 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:50,499 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash -970175768, now seen corresponding path program 1 times [2019-10-13 19:34:50,500 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:50,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407693715] [2019-10-13 19:34:50,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:50,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:50,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,883 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:50,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407693715] [2019-10-13 19:34:50,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:50,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:34:50,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143617633] [2019-10-13 19:34:50,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:34:50,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:34:50,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:34:50,994 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 8 states. [2019-10-13 19:34:51,541 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:51,904 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:34:52,178 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:52,447 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:53,769 INFO L93 Difference]: Finished difference Result 245 states and 303 transitions. [2019-10-13 19:34:53,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:34:53,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:34:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:53,773 INFO L225 Difference]: With dead ends: 245 [2019-10-13 19:34:53,773 INFO L226 Difference]: Without dead ends: 148 [2019-10-13 19:34:53,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:34:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-13 19:34:53,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2019-10-13 19:34:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-13 19:34:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2019-10-13 19:34:53,808 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 51 [2019-10-13 19:34:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:53,808 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2019-10-13 19:34:53,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:34:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2019-10-13 19:34:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:34:53,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:53,810 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:53,810 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:53,811 INFO L82 PathProgramCache]: Analyzing trace with hash 137025886, now seen corresponding path program 1 times [2019-10-13 19:34:53,811 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:53,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486033794] [2019-10-13 19:34:53,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:53,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:53,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,084 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:54,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486033794] [2019-10-13 19:34:54,171 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:54,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:34:54,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759096663] [2019-10-13 19:34:54,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:34:54,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:54,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:34:54,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:34:54,173 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 6 states. [2019-10-13 19:34:54,628 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:55,885 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:56,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:56,691 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2019-10-13 19:34:56,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:34:56,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-10-13 19:34:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:56,696 INFO L225 Difference]: With dead ends: 342 [2019-10-13 19:34:56,696 INFO L226 Difference]: Without dead ends: 245 [2019-10-13 19:34:56,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:34:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2019-10-13 19:34:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 204. [2019-10-13 19:34:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-10-13 19:34:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2019-10-13 19:34:56,741 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 64 [2019-10-13 19:34:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:56,742 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2019-10-13 19:34:56,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:34:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2019-10-13 19:34:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:34:56,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:56,743 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:56,744 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash -274572639, now seen corresponding path program 1 times [2019-10-13 19:34:56,744 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:56,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107999987] [2019-10-13 19:34:56,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:56,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:56,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,019 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:57,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107999987] [2019-10-13 19:34:57,098 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:57,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:34:57,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688930882] [2019-10-13 19:34:57,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:34:57,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:57,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:34:57,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:34:57,100 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 8 states. [2019-10-13 19:34:57,827 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:58,862 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:59,262 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:59,827 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:00,087 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:00,394 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:01,353 INFO L93 Difference]: Finished difference Result 607 states and 749 transitions. [2019-10-13 19:35:01,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:01,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2019-10-13 19:35:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:01,360 INFO L225 Difference]: With dead ends: 607 [2019-10-13 19:35:01,360 INFO L226 Difference]: Without dead ends: 427 [2019-10-13 19:35:01,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-13 19:35:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 363. [2019-10-13 19:35:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-10-13 19:35:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2019-10-13 19:35:01,447 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 78 [2019-10-13 19:35:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:01,447 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2019-10-13 19:35:01,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2019-10-13 19:35:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 19:35:01,449 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:01,449 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:01,449 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:01,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:01,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1223934493, now seen corresponding path program 1 times [2019-10-13 19:35:01,450 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:01,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046017916] [2019-10-13 19:35:01,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:01,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:01,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,735 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:01,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046017916] [2019-10-13 19:35:01,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:01,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:01,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740193248] [2019-10-13 19:35:01,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:01,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:01,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:01,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:01,853 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand 9 states. [2019-10-13 19:35:02,416 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:03,618 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:03,912 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:04,870 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:05,162 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:05,404 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:05,687 INFO L93 Difference]: Finished difference Result 466 states and 584 transitions. [2019-10-13 19:35:05,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:05,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2019-10-13 19:35:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:05,692 INFO L225 Difference]: With dead ends: 466 [2019-10-13 19:35:05,693 INFO L226 Difference]: Without dead ends: 463 [2019-10-13 19:35:05,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-10-13 19:35:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2019-10-13 19:35:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-10-13 19:35:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 415 transitions. [2019-10-13 19:35:05,763 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 415 transitions. Word has length 82 [2019-10-13 19:35:05,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:05,764 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 415 transitions. [2019-10-13 19:35:05,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 415 transitions. [2019-10-13 19:35:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:35:05,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:05,766 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:05,766 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:05,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1913348729, now seen corresponding path program 1 times [2019-10-13 19:35:05,767 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:05,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474824886] [2019-10-13 19:35:05,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:05,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:05,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,041 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:06,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474824886] [2019-10-13 19:35:06,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:06,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:06,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532663680] [2019-10-13 19:35:06,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:06,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:06,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:06,179 INFO L87 Difference]: Start difference. First operand 363 states and 415 transitions. Second operand 9 states. [2019-10-13 19:35:07,375 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:07,646 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:35:07,949 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:08,211 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:09,281 INFO L93 Difference]: Finished difference Result 810 states and 1008 transitions. [2019-10-13 19:35:09,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:09,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-13 19:35:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:09,290 INFO L225 Difference]: With dead ends: 810 [2019-10-13 19:35:09,290 INFO L226 Difference]: Without dead ends: 471 [2019-10-13 19:35:09,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-13 19:35:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 373. [2019-10-13 19:35:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-10-13 19:35:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2019-10-13 19:35:09,359 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 98 [2019-10-13 19:35:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:09,359 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2019-10-13 19:35:09,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2019-10-13 19:35:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:35:09,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:09,361 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:09,362 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:09,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1019862391, now seen corresponding path program 1 times [2019-10-13 19:35:09,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:09,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318312095] [2019-10-13 19:35:09,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:09,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:09,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,627 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:09,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318312095] [2019-10-13 19:35:09,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:09,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:09,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292640060] [2019-10-13 19:35:09,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:09,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:09,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:09,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:09,757 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 11 states. [2019-10-13 19:35:10,484 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:10,746 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:11,003 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:11,692 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:11,966 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:12,235 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:13,504 INFO L93 Difference]: Finished difference Result 830 states and 1030 transitions. [2019-10-13 19:35:13,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:13,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2019-10-13 19:35:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:13,513 INFO L225 Difference]: With dead ends: 830 [2019-10-13 19:35:13,513 INFO L226 Difference]: Without dead ends: 481 [2019-10-13 19:35:13,517 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2019-10-13 19:35:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 381. [2019-10-13 19:35:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-10-13 19:35:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2019-10-13 19:35:13,624 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 98 [2019-10-13 19:35:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:13,624 INFO L462 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2019-10-13 19:35:13,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2019-10-13 19:35:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:35:13,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:13,629 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:13,630 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:13,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1027621750, now seen corresponding path program 1 times [2019-10-13 19:35:13,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:13,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927278580] [2019-10-13 19:35:13,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:13,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:13,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,958 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:14,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927278580] [2019-10-13 19:35:14,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:14,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:35:14,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46126155] [2019-10-13 19:35:14,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:35:14,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:14,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:35:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:35:14,117 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 7 states. [2019-10-13 19:35:14,501 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:14,972 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:16,995 INFO L93 Difference]: Finished difference Result 1133 states and 1452 transitions. [2019-10-13 19:35:16,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:35:16,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-10-13 19:35:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:17,000 INFO L225 Difference]: With dead ends: 1133 [2019-10-13 19:35:17,000 INFO L226 Difference]: Without dead ends: 776 [2019-10-13 19:35:17,003 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2019-10-13 19:35:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 677. [2019-10-13 19:35:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2019-10-13 19:35:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 803 transitions. [2019-10-13 19:35:17,139 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 803 transitions. Word has length 98 [2019-10-13 19:35:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:17,140 INFO L462 AbstractCegarLoop]: Abstraction has 677 states and 803 transitions. [2019-10-13 19:35:17,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:35:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 803 transitions. [2019-10-13 19:35:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 19:35:17,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:17,145 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:17,145 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1865521988, now seen corresponding path program 1 times [2019-10-13 19:35:17,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:17,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493260873] [2019-10-13 19:35:17,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:17,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:17,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,551 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:35:17,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493260873] [2019-10-13 19:35:17,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266463667] [2019-10-13 19:35:17,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:18,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:18,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:18,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:18,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827562727] [2019-10-13 19:35:18,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:18,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:18,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:18,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:18,204 INFO L87 Difference]: Start difference. First operand 677 states and 803 transitions. Second operand 8 states. [2019-10-13 19:35:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:18,677 INFO L93 Difference]: Finished difference Result 1296 states and 1548 transitions. [2019-10-13 19:35:18,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:18,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-10-13 19:35:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:18,682 INFO L225 Difference]: With dead ends: 1296 [2019-10-13 19:35:18,682 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 19:35:18,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 19:35:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 19:35:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 19:35:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 749 transitions. [2019-10-13 19:35:18,811 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 749 transitions. Word has length 102 [2019-10-13 19:35:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:18,811 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 749 transitions. [2019-10-13 19:35:18,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 749 transitions. [2019-10-13 19:35:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:35:18,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:18,814 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:19,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:19,026 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:19,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1153565628, now seen corresponding path program 1 times [2019-10-13 19:35:19,026 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:19,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842206961] [2019-10-13 19:35:19,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:19,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:19,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,389 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 19:35:19,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842206961] [2019-10-13 19:35:19,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658724852] [2019-10-13 19:35:19,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:19,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:19,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:35:20,106 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:20,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-13 19:35:20,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393769289] [2019-10-13 19:35:20,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:20,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:20,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:35:20,109 INFO L87 Difference]: Start difference. First operand 643 states and 749 transitions. Second operand 8 states. [2019-10-13 19:35:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:20,428 INFO L93 Difference]: Finished difference Result 1085 states and 1284 transitions. [2019-10-13 19:35:20,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:20,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2019-10-13 19:35:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:20,429 INFO L225 Difference]: With dead ends: 1085 [2019-10-13 19:35:20,430 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:35:20,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:35:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:35:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:35:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:35:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:35:20,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2019-10-13 19:35:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:20,434 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:35:20,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:35:20,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:35:20,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:20,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.