/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:08:44,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:08:44,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:08:44,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:08:44,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:08:44,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:08:44,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:08:44,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:08:44,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:08:44,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:08:44,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:08:44,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:08:44,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:08:44,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:08:44,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:08:44,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:08:44,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:08:44,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:08:44,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:08:44,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:08:44,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:08:44,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:08:44,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:08:44,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:08:44,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:08:44,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:08:44,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:08:44,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:08:44,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:08:44,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:08:44,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:08:44,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:08:44,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:08:44,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:08:44,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:08:44,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:08:44,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:08:44,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:08:44,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:08:44,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:08:44,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:08:44,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:08:44,927 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:08:44,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:08:44,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:08:44,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:08:44,928 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:08:44,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:08:44,931 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:08:44,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:08:44,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:08:44,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:08:44,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:08:44,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:08:44,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:08:44,932 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:08:44,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:08:44,935 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:08:44,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:08:44,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:08:44,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:08:44,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:08:44,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:08:44,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:08:44,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:08:44,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:08:44,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:08:44,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:08:44,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:08:44,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:08:44,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:08:45,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:08:45,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:08:45,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:08:45,226 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:08:45,227 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:08:45,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-11-06 22:08:45,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bfa19f9/1f69ddefe4b34fd0b370842ef38185f4/FLAGca034d68a [2019-11-06 22:08:45,877 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:08:45,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-11-06 22:08:45,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bfa19f9/1f69ddefe4b34fd0b370842ef38185f4/FLAGca034d68a [2019-11-06 22:08:46,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bfa19f9/1f69ddefe4b34fd0b370842ef38185f4 [2019-11-06 22:08:46,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:08:46,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:08:46,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:08:46,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:08:46,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:08:46,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46, skipping insertion in model container [2019-11-06 22:08:46,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,192 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:08:46,261 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:08:46,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:08:46,752 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:08:46,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:08:46,897 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:08:46,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46 WrapperNode [2019-11-06 22:08:46,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:08:46,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:08:46,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:08:46,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:08:46,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2019-11-06 22:08:46,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:08:46,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:08:46,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:08:46,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:08:46,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:08:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:08:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:08:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:08:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:08:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:08:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:08:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:08:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:08:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:08:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:08:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:08:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:08:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:08:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:08:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:08:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:08:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:08:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:08:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:08:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:08:47,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:08:47,082 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:08:47,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:08:47,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:08:47,082 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:08:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:08:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:08:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:08:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:08:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:08:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:08:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:08:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:08:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:08:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:08:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:08:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:08:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:08:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:08:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:08:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:08:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:08:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:08:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:08:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:08:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:08:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:08:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:08:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:08:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:08:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:08:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:08:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:08:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:08:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:08:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:08:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:08:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:08:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:08:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:08:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:08:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:08:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:08:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:08:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:08:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:08:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:08:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:08:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:08:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:08:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:08:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:08:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:08:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:08:48,409 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:08:48,409 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:08:48,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:48 BoogieIcfgContainer [2019-11-06 22:08:48,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:08:48,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:08:48,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:08:48,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:08:48,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:46" (1/3) ... [2019-11-06 22:08:48,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f876d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:48, skipping insertion in model container [2019-11-06 22:08:48,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (2/3) ... [2019-11-06 22:08:48,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f876d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:48, skipping insertion in model container [2019-11-06 22:08:48,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:48" (3/3) ... [2019-11-06 22:08:48,422 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2019-11-06 22:08:48,432 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:08:48,444 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:08:48,456 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:08:48,496 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:08:48,496 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:08:48,496 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:08:48,497 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:08:48,498 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:08:48,499 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:08:48,499 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:08:48,499 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:08:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2019-11-06 22:08:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:08:48,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:48,546 INFO L410 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] [2019-11-06 22:08:48,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:48,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1893311162, now seen corresponding path program 1 times [2019-11-06 22:08:48,563 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:48,564 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540899498] [2019-11-06 22:08:48,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,261 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:49,401 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540899498] [2019-11-06 22:08:49,402 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:49,402 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:08:49,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653043777] [2019-11-06 22:08:49,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:08:49,410 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:49,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:08:49,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:08:49,428 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 4 states. [2019-11-06 22:08:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:50,795 INFO L93 Difference]: Finished difference Result 372 states and 477 transitions. [2019-11-06 22:08:50,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:08:50,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-11-06 22:08:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:50,819 INFO L225 Difference]: With dead ends: 372 [2019-11-06 22:08:50,819 INFO L226 Difference]: Without dead ends: 204 [2019-11-06 22:08:50,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:08:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-11-06 22:08:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2019-11-06 22:08:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-11-06 22:08:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2019-11-06 22:08:50,924 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 59 [2019-11-06 22:08:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:50,925 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2019-11-06 22:08:50,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:08:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2019-11-06 22:08:50,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:08:50,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:50,929 INFO L410 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] [2019-11-06 22:08:50,930 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:50,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1978801715, now seen corresponding path program 1 times [2019-11-06 22:08:50,930 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:50,931 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953166128] [2019-11-06 22:08:50,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,328 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:51,392 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953166128] [2019-11-06 22:08:51,393 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:51,393 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:08:51,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36563341] [2019-11-06 22:08:51,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:08:51,396 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:08:51,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:08:51,396 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand 5 states. [2019-11-06 22:08:51,971 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:53,239 INFO L93 Difference]: Finished difference Result 311 states and 381 transitions. [2019-11-06 22:08:53,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:08:53,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 22:08:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:53,245 INFO L225 Difference]: With dead ends: 311 [2019-11-06 22:08:53,246 INFO L226 Difference]: Without dead ends: 194 [2019-11-06 22:08:53,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:08:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-11-06 22:08:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2019-11-06 22:08:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-11-06 22:08:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2019-11-06 22:08:53,289 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 60 [2019-11-06 22:08:53,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:53,290 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2019-11-06 22:08:53,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:08:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2019-11-06 22:08:53,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:08:53,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:53,292 INFO L410 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] [2019-11-06 22:08:53,292 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:53,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:53,293 INFO L82 PathProgramCache]: Analyzing trace with hash -532508270, now seen corresponding path program 1 times [2019-11-06 22:08:53,293 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:53,293 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884786168] [2019-11-06 22:08:53,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,709 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:53,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884786168] [2019-11-06 22:08:53,809 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:53,809 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:53,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497516719] [2019-11-06 22:08:53,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:53,810 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:53,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:53,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:53,810 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 9 states. [2019-11-06 22:08:54,279 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:54,658 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:08:54,960 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:55,233 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:56,314 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:58,874 INFO L93 Difference]: Finished difference Result 533 states and 661 transitions. [2019-11-06 22:08:58,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:08:58,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-11-06 22:08:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:58,881 INFO L225 Difference]: With dead ends: 533 [2019-11-06 22:08:58,881 INFO L226 Difference]: Without dead ends: 401 [2019-11-06 22:08:58,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:08:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-11-06 22:08:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 340. [2019-11-06 22:08:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2019-11-06 22:08:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 414 transitions. [2019-11-06 22:08:58,996 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 414 transitions. Word has length 64 [2019-11-06 22:08:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:58,997 INFO L462 AbstractCegarLoop]: Abstraction has 340 states and 414 transitions. [2019-11-06 22:08:58,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 414 transitions. [2019-11-06 22:08:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:08:58,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:59,000 INFO L410 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] [2019-11-06 22:08:59,000 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:59,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:59,000 INFO L82 PathProgramCache]: Analyzing trace with hash 216340368, now seen corresponding path program 1 times [2019-11-06 22:08:59,001 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:59,001 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781439165] [2019-11-06 22:08:59,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,315 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:08:59,429 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781439165] [2019-11-06 22:08:59,429 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:59,430 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:59,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534645731] [2019-11-06 22:08:59,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:59,431 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:59,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:59,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:59,432 INFO L87 Difference]: Start difference. First operand 340 states and 414 transitions. Second operand 9 states. [2019-11-06 22:08:59,862 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:00,585 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:01,717 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:01,986 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:02,340 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:02,647 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:03,683 INFO L93 Difference]: Finished difference Result 875 states and 1130 transitions. [2019-11-06 22:09:03,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:09:03,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-11-06 22:09:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:03,690 INFO L225 Difference]: With dead ends: 875 [2019-11-06 22:09:03,690 INFO L226 Difference]: Without dead ends: 563 [2019-11-06 22:09:03,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:09:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-11-06 22:09:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 499. [2019-11-06 22:09:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-11-06 22:09:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 597 transitions. [2019-11-06 22:09:03,792 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 597 transitions. Word has length 70 [2019-11-06 22:09:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:03,793 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 597 transitions. [2019-11-06 22:09:03,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:09:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 597 transitions. [2019-11-06 22:09:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:09:03,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:03,796 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:03,796 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1357993179, now seen corresponding path program 1 times [2019-11-06 22:09:03,797 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:03,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948149401] [2019-11-06 22:09:03,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,077 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:09:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:09:04,267 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948149401] [2019-11-06 22:09:04,267 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:04,268 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:09:04,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464354068] [2019-11-06 22:09:04,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:09:04,270 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:04,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:09:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:09:04,271 INFO L87 Difference]: Start difference. First operand 499 states and 597 transitions. Second operand 9 states. [2019-11-06 22:09:05,451 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:05,733 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:09:05,997 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:06,258 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:07,237 INFO L93 Difference]: Finished difference Result 1060 states and 1356 transitions. [2019-11-06 22:09:07,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:09:07,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-11-06 22:09:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:07,243 INFO L225 Difference]: With dead ends: 1060 [2019-11-06 22:09:07,243 INFO L226 Difference]: Without dead ends: 589 [2019-11-06 22:09:07,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:09:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-06 22:09:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 512. [2019-11-06 22:09:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-11-06 22:09:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 611 transitions. [2019-11-06 22:09:07,343 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 611 transitions. Word has length 112 [2019-11-06 22:09:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:07,343 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 611 transitions. [2019-11-06 22:09:07,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:09:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 611 transitions. [2019-11-06 22:09:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:09:07,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:07,346 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:07,346 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:07,347 INFO L82 PathProgramCache]: Analyzing trace with hash 581168867, now seen corresponding path program 1 times [2019-11-06 22:09:07,347 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:07,347 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026689491] [2019-11-06 22:09:07,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,646 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:09:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:09:07,823 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026689491] [2019-11-06 22:09:07,823 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:07,823 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:09:07,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339213708] [2019-11-06 22:09:07,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:09:07,825 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:09:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:09:07,825 INFO L87 Difference]: Start difference. First operand 512 states and 611 transitions. Second operand 11 states. [2019-11-06 22:09:08,423 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:08,690 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:08,942 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:09,854 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:10,170 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:10,442 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:11,609 INFO L93 Difference]: Finished difference Result 1083 states and 1380 transitions. [2019-11-06 22:09:11,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:09:11,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2019-11-06 22:09:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:11,614 INFO L225 Difference]: With dead ends: 1083 [2019-11-06 22:09:11,614 INFO L226 Difference]: Without dead ends: 599 [2019-11-06 22:09:11,616 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:09:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-11-06 22:09:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 520. [2019-11-06 22:09:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-11-06 22:09:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2019-11-06 22:09:11,696 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 112 [2019-11-06 22:09:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:11,697 INFO L462 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2019-11-06 22:09:11,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:09:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2019-11-06 22:09:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:09:11,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:11,699 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:11,700 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:11,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1350338882, now seen corresponding path program 1 times [2019-11-06 22:09:11,700 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:11,701 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419131629] [2019-11-06 22:09:11,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:11,985 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:09:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:09:12,171 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419131629] [2019-11-06 22:09:12,171 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:12,172 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:09:12,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349168281] [2019-11-06 22:09:12,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:09:12,173 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:12,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:09:12,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:09:12,174 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 7 states. [2019-11-06 22:09:12,651 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:13,210 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:15,645 INFO L93 Difference]: Finished difference Result 1571 states and 2020 transitions. [2019-11-06 22:09:15,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:09:15,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-11-06 22:09:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:15,652 INFO L225 Difference]: With dead ends: 1571 [2019-11-06 22:09:15,652 INFO L226 Difference]: Without dead ends: 1079 [2019-11-06 22:09:15,655 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:09:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2019-11-06 22:09:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1005. [2019-11-06 22:09:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2019-11-06 22:09:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1219 transitions. [2019-11-06 22:09:15,848 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1219 transitions. Word has length 112 [2019-11-06 22:09:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:15,849 INFO L462 AbstractCegarLoop]: Abstraction has 1005 states and 1219 transitions. [2019-11-06 22:09:15,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:09:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1219 transitions. [2019-11-06 22:09:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 22:09:15,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:15,857 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:15,857 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1975342852, now seen corresponding path program 1 times [2019-11-06 22:09:15,858 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:15,860 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787730581] [2019-11-06 22:09:15,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,294 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:09:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:09:16,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787730581] [2019-11-06 22:09:16,485 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:16,485 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:09:16,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151182373] [2019-11-06 22:09:16,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:09:16,486 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:09:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:09:16,488 INFO L87 Difference]: Start difference. First operand 1005 states and 1219 transitions. Second operand 12 states. [2019-11-06 22:09:17,382 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:18,149 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:18,900 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:19,258 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:19,568 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:09:19,892 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:20,223 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:22,852 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:23,200 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:24,113 INFO L93 Difference]: Finished difference Result 2851 states and 3676 transitions. [2019-11-06 22:09:24,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-06 22:09:24,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2019-11-06 22:09:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:24,126 INFO L225 Difference]: With dead ends: 2851 [2019-11-06 22:09:24,126 INFO L226 Difference]: Without dead ends: 2072 [2019-11-06 22:09:24,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:09:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states.