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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:48,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:48,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:48,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:48,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:48,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:48,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:48,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:48,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:48,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:48,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:48,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:48,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:48,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:48,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:48,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:48,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:48,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:48,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:49,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:49,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:49,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:49,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:49,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:49,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:49,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:49,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:49,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:49,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:49,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:49,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:49,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:49,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:49,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:49,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:49,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:49,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:49,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:49,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:49,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:49,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:49,015 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 19:37:49,032 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:49,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:49,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:49,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:49,034 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:49,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:49,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:49,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:49,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:49,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:49,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:49,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:49,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:49,036 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:49,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:49,037 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:49,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:49,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:49,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:49,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:49,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:49,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:49,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:49,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:49,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:49,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:49,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:49,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:49,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:49,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:49,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:49,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:49,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:49,356 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:49,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-10-13 19:37:49,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/921b82147/ac2172876e6c476cb74407a5d30345af/FLAG38175e8ba [2019-10-13 19:37:49,944 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:49,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-10-13 19:37:49,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/921b82147/ac2172876e6c476cb74407a5d30345af/FLAG38175e8ba [2019-10-13 19:37:50,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/921b82147/ac2172876e6c476cb74407a5d30345af [2019-10-13 19:37:50,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:50,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:50,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:50,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:50,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:50,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:50,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a73aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50, skipping insertion in model container [2019-10-13 19:37:50,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:50,299 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:50,365 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:50,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:50,826 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:50,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:50,969 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:50,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50 WrapperNode [2019-10-13 19:37:50,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:50,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:50,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:50,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:50,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:50,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:51,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:51,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:51,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:51,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:51,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:51,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:51,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:51,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:51,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:51,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (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 19:37:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:37:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:37:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:51,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:37:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:52,106 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:52,107 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:52,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:52 BoogieIcfgContainer [2019-10-13 19:37:52,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:52,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:52,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:52,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:52,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:50" (1/3) ... [2019-10-13 19:37:52,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5830fc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:52, skipping insertion in model container [2019-10-13 19:37:52,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50" (2/3) ... [2019-10-13 19:37:52,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5830fc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:52, skipping insertion in model container [2019-10-13 19:37:52,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:52" (3/3) ... [2019-10-13 19:37:52,117 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2019-10-13 19:37:52,127 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:52,135 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:52,147 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:52,179 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:52,179 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:52,179 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:52,179 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:52,180 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:52,180 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:52,180 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:52,180 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-10-13 19:37:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:52,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:52,227 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] [2019-10-13 19:37:52,231 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2019-10-13 19:37:52,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:52,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106742699] [2019-10-13 19:37:52,246 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,960 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,056 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 19:37:53,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106742699] [2019-10-13 19:37:53,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:53,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:37:53,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437598859] [2019-10-13 19:37:53,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:37:53,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:53,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:37:53,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:53,100 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2019-10-13 19:37:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:54,208 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2019-10-13 19:37:54,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:37:54,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:37:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:54,236 INFO L225 Difference]: With dead ends: 296 [2019-10-13 19:37:54,237 INFO L226 Difference]: Without dead ends: 160 [2019-10-13 19:37:54,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 19:37:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-13 19:37:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2019-10-13 19:37:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-13 19:37:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-10-13 19:37:54,374 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2019-10-13 19:37:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:54,375 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-10-13 19:37:54,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:37:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-10-13 19:37:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:37:54,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:54,379 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] [2019-10-13 19:37:54,379 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2019-10-13 19:37:54,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:54,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497625160] [2019-10-13 19:37:54,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:54,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:54,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,800 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:54,842 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 19:37:54,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497625160] [2019-10-13 19:37:54,843 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:54,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:54,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429886894] [2019-10-13 19:37:54,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:54,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:54,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:54,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:54,846 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2019-10-13 19:37:55,292 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:56,088 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2019-10-13 19:37:56,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:56,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:37:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:56,092 INFO L225 Difference]: With dead ends: 225 [2019-10-13 19:37:56,092 INFO L226 Difference]: Without dead ends: 144 [2019-10-13 19:37:56,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 19:37:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-13 19:37:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2019-10-13 19:37:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-13 19:37:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2019-10-13 19:37:56,130 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2019-10-13 19:37:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:56,130 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2019-10-13 19:37:56,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2019-10-13 19:37:56,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:37:56,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:56,133 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] [2019-10-13 19:37:56,133 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:56,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2019-10-13 19:37:56,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:56,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969989285] [2019-10-13 19:37:56,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:56,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:56,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,500 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,634 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 19:37:56,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969989285] [2019-10-13 19:37:56,635 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:56,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:56,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416319074] [2019-10-13 19:37:56,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:56,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:56,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:56,637 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2019-10-13 19:37:57,062 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:57,430 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:57,725 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:57,977 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:59,120 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2019-10-13 19:37:59,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:59,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:37:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:59,125 INFO L225 Difference]: With dead ends: 238 [2019-10-13 19:37:59,125 INFO L226 Difference]: Without dead ends: 144 [2019-10-13 19:37:59,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 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 19:37:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-13 19:37:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2019-10-13 19:37:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-13 19:37:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2019-10-13 19:37:59,159 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2019-10-13 19:37:59,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:59,159 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2019-10-13 19:37:59,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2019-10-13 19:37:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 19:37:59,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:59,162 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] [2019-10-13 19:37:59,162 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:59,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2019-10-13 19:37:59,163 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:59,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487313633] [2019-10-13 19:37:59,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:59,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:59,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,473 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,554 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 19:37:59,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487313633] [2019-10-13 19:37:59,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:59,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:37:59,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359085706] [2019-10-13 19:37:59,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:37:59,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:37:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:37:59,557 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2019-10-13 19:37:59,946 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:01,185 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:01,872 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2019-10-13 19:38:01,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:01,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2019-10-13 19:38:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:01,877 INFO L225 Difference]: With dead ends: 338 [2019-10-13 19:38:01,877 INFO L226 Difference]: Without dead ends: 244 [2019-10-13 19:38:01,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-10-13 19:38:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2019-10-13 19:38:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-10-13 19:38:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2019-10-13 19:38:01,930 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2019-10-13 19:38:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:01,930 INFO L462 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2019-10-13 19:38:01,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2019-10-13 19:38:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 19:38:01,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:01,933 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] [2019-10-13 19:38:01,933 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2019-10-13 19:38:01,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:01,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646518175] [2019-10-13 19:38:01,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:01,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:01,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,239 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,337 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 19:38:02,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646518175] [2019-10-13 19:38:02,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:02,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:02,339 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738383796] [2019-10-13 19:38:02,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:02,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:02,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:02,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:02,341 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2019-10-13 19:38:02,783 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:04,298 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:04,589 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:04,857 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:05,133 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:05,809 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2019-10-13 19:38:05,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:05,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-13 19:38:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:05,816 INFO L225 Difference]: With dead ends: 555 [2019-10-13 19:38:05,816 INFO L226 Difference]: Without dead ends: 378 [2019-10-13 19:38:05,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-13 19:38:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2019-10-13 19:38:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-10-13 19:38:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2019-10-13 19:38:05,888 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2019-10-13 19:38:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:05,888 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2019-10-13 19:38:05,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2019-10-13 19:38:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:38:05,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:05,891 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, 1, 1] [2019-10-13 19:38:05,891 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2019-10-13 19:38:05,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:05,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597363299] [2019-10-13 19:38:05,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:05,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:05,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,353 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,450 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 19:38:06,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597363299] [2019-10-13 19:38:06,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:06,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:06,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273881860] [2019-10-13 19:38:06,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:06,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:06,455 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 10 states. [2019-10-13 19:38:07,020 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:08,690 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:08,998 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:09,276 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:09,574 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:09,896 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:10,870 INFO L93 Difference]: Finished difference Result 743 states and 934 transitions. [2019-10-13 19:38:10,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:10,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2019-10-13 19:38:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:10,876 INFO L225 Difference]: With dead ends: 743 [2019-10-13 19:38:10,877 INFO L226 Difference]: Without dead ends: 555 [2019-10-13 19:38:10,878 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-13 19:38:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 483. [2019-10-13 19:38:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-10-13 19:38:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 568 transitions. [2019-10-13 19:38:10,986 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 568 transitions. Word has length 84 [2019-10-13 19:38:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:10,986 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 568 transitions. [2019-10-13 19:38:10,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 568 transitions. [2019-10-13 19:38:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:38:10,988 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:10,988 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, 1, 1] [2019-10-13 19:38:10,989 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:10,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2019-10-13 19:38:10,989 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:10,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484003114] [2019-10-13 19:38:10,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,246 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,380 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 19:38:11,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484003114] [2019-10-13 19:38:11,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:11,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:11,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87825717] [2019-10-13 19:38:11,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:11,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:11,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:11,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:11,384 INFO L87 Difference]: Start difference. First operand 483 states and 568 transitions. Second operand 8 states. [2019-10-13 19:38:12,341 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:12,601 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:12,868 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:13,868 INFO L93 Difference]: Finished difference Result 883 states and 1083 transitions. [2019-10-13 19:38:13,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:13,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-13 19:38:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:13,874 INFO L225 Difference]: With dead ends: 883 [2019-10-13 19:38:13,874 INFO L226 Difference]: Without dead ends: 543 [2019-10-13 19:38:13,876 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-13 19:38:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 483. [2019-10-13 19:38:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-10-13 19:38:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 567 transitions. [2019-10-13 19:38:13,993 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 567 transitions. Word has length 84 [2019-10-13 19:38:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:13,994 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 567 transitions. [2019-10-13 19:38:13,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 567 transitions. [2019-10-13 19:38:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:38:13,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:13,996 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, 1, 1] [2019-10-13 19:38:13,997 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2019-10-13 19:38:13,997 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:13,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908387636] [2019-10-13 19:38:13,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:13,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:13,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,274 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,411 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 19:38:14,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908387636] [2019-10-13 19:38:14,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:14,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:14,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137456993] [2019-10-13 19:38:14,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:14,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:14,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:14,413 INFO L87 Difference]: Start difference. First operand 483 states and 567 transitions. Second operand 12 states. [2019-10-13 19:38:15,148 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:15,427 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:15,688 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:16,587 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:16,881 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:17,176 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:17,449 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:18,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:18,681 INFO L93 Difference]: Finished difference Result 1007 states and 1237 transitions. [2019-10-13 19:38:18,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:18,681 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-13 19:38:18,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:18,685 INFO L225 Difference]: With dead ends: 1007 [2019-10-13 19:38:18,685 INFO L226 Difference]: Without dead ends: 548 [2019-10-13 19:38:18,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-10-13 19:38:18,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 490. [2019-10-13 19:38:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2019-10-13 19:38:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 574 transitions. [2019-10-13 19:38:18,774 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 574 transitions. Word has length 84 [2019-10-13 19:38:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:18,775 INFO L462 AbstractCegarLoop]: Abstraction has 490 states and 574 transitions. [2019-10-13 19:38:18,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 574 transitions. [2019-10-13 19:38:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 19:38:18,777 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:18,777 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] [2019-10-13 19:38:18,777 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2019-10-13 19:38:18,778 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:18,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634185618] [2019-10-13 19:38:18,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,779 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,051 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,254 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 19:38:19,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634185618] [2019-10-13 19:38:19,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582640765] [2019-10-13 19:38:19,257 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 19:38:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 19:38:19,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:19,703 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 19:38:19,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:38:19,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-13 19:38:19,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586567225] [2019-10-13 19:38:19,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:19,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:19,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:19,706 INFO L87 Difference]: Start difference. First operand 490 states and 574 transitions. Second operand 8 states. [2019-10-13 19:38:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:20,330 INFO L93 Difference]: Finished difference Result 1385 states and 1656 transitions. [2019-10-13 19:38:20,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:20,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2019-10-13 19:38:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:20,338 INFO L225 Difference]: With dead ends: 1385 [2019-10-13 19:38:20,338 INFO L226 Difference]: Without dead ends: 919 [2019-10-13 19:38:20,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-13 19:38:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2019-10-13 19:38:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-10-13 19:38:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1074 transitions. [2019-10-13 19:38:20,527 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1074 transitions. Word has length 96 [2019-10-13 19:38:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:20,528 INFO L462 AbstractCegarLoop]: Abstraction has 916 states and 1074 transitions. [2019-10-13 19:38:20,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1074 transitions. [2019-10-13 19:38:20,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 19:38:20,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:20,542 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] [2019-10-13 19:38:20,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:20,752 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:20,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2019-10-13 19:38:20,753 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:20,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893432608] [2019-10-13 19:38:20,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:20,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:20,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,149 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:21,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893432608] [2019-10-13 19:38:21,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:21,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 19:38:21,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858509257] [2019-10-13 19:38:21,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:38:21,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:38:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:21,342 INFO L87 Difference]: Start difference. First operand 916 states and 1074 transitions. Second operand 14 states. [2019-10-13 19:38:22,213 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:22,473 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:22,764 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:23,474 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:24,425 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:24,846 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,668 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,993 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:26,332 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190