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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:41:13,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:41:13,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:41:13,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:41:13,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:41:13,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:41:13,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:41:13,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:41:13,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:41:13,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:41:13,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:41:13,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:41:13,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:41:13,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:41:13,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:41:13,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:41:13,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:41:13,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:41:13,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:41:13,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:41:13,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:41:13,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:41:13,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:41:13,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:41:13,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:41:13,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:41:13,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:41:13,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:41:13,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:41:13,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:41:13,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:41:13,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:41:13,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:41:13,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:41:13,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:41:13,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:41:13,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:41:13,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:41:13,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:41:13,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:41:13,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:41:13,848 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 [2019-10-14 23:41:13,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:41:13,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:41:13,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:41:13,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:41:13,867 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:41:13,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:41:13,867 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:41:13,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:41:13,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:41:13,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:41:13,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:41:13,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:41:13,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:41:13,869 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:41:13,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:41:13,869 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:41:13,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:41:13,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:41:13,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:41:13,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:41:13,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:41:13,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:41:13,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:41:13,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:41:13,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:41:13,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:41:13,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:41:13,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:41:13,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:41:14,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:41:14,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:41:14,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:41:14,169 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:41:14,170 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:41:14,171 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2019-10-14 23:41:14,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e077f62/28bac66c9ca24c718d49f8b3fcc76a46/FLAGa2c2c9a0f [2019-10-14 23:41:14,832 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:41:14,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2019-10-14 23:41:14,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e077f62/28bac66c9ca24c718d49f8b3fcc76a46/FLAGa2c2c9a0f [2019-10-14 23:41:15,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e077f62/28bac66c9ca24c718d49f8b3fcc76a46 [2019-10-14 23:41:15,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:41:15,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:41:15,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:41:15,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:41:15,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:41:15,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626b4f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15, skipping insertion in model container [2019-10-14 23:41:15,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,143 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:41:15,205 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:41:15,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:41:15,670 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:41:15,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:41:15,823 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:41:15,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15 WrapperNode [2019-10-14 23:41:15,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:41:15,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:41:15,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:41:15,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:41:15,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (1/1) ... [2019-10-14 23:41:15,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:41:15,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:41:15,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:41:15,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:41:15,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (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 [2019-10-14 23:41:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:41:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:41:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:41:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:41:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:41:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:41:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:41:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:41:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:41:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:41:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:41:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:41:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:41:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:41:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:41:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:41:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:41:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:41:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:41:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:41:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:41:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-14 23:41:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-14 23:41:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-14 23:41:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:41:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:41:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:41:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:41:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:41:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:41:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:41:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:41:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:41:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:41:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:41:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:41:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:41:15,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:41:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:41:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:41:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:41:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:41:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:41:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:41:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:41:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:41:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:41:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:41:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:41:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:41:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:41:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:41:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:41:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:41:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:41:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:41:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:41:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:41:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:41:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:41:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:41:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:41:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-14 23:41:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-14 23:41:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:41:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:41:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:41:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:41:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:41:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:41:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:41:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:41:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:41:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:41:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:41:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:41:17,154 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:41:17,154 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:41:17,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:41:17 BoogieIcfgContainer [2019-10-14 23:41:17,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:41:17,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:41:17,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:41:17,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:41:17,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:41:15" (1/3) ... [2019-10-14 23:41:17,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7512cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:41:17, skipping insertion in model container [2019-10-14 23:41:17,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:15" (2/3) ... [2019-10-14 23:41:17,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7512cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:41:17, skipping insertion in model container [2019-10-14 23:41:17,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:41:17" (3/3) ... [2019-10-14 23:41:17,166 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2019-10-14 23:41:17,177 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:41:17,187 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:41:17,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:41:17,235 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:41:17,236 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:41:17,236 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:41:17,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:41:17,237 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:41:17,237 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:41:17,237 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:41:17,237 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:41:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-10-14 23:41:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 23:41:17,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:17,281 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] [2019-10-14 23:41:17,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:17,290 INFO L82 PathProgramCache]: Analyzing trace with hash 479094946, now seen corresponding path program 1 times [2019-10-14 23:41:17,299 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:17,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321873182] [2019-10-14 23:41:17,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:17,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:17,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:17,970 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:18,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321873182] [2019-10-14 23:41:18,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:18,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:41:18,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297160680] [2019-10-14 23:41:18,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:41:18,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:18,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:41:18,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:41:18,145 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2019-10-14 23:41:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:19,380 INFO L93 Difference]: Finished difference Result 335 states and 423 transitions. [2019-10-14 23:41:19,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:41:19,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-14 23:41:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:19,402 INFO L225 Difference]: With dead ends: 335 [2019-10-14 23:41:19,403 INFO L226 Difference]: Without dead ends: 183 [2019-10-14 23:41:19,411 INFO L600 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 [2019-10-14 23:41:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-14 23:41:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2019-10-14 23:41:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-14 23:41:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2019-10-14 23:41:19,526 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 59 [2019-10-14 23:41:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:19,526 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2019-10-14 23:41:19,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:41:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2019-10-14 23:41:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-14 23:41:19,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:19,531 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] [2019-10-14 23:41:19,531 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1126861649, now seen corresponding path program 1 times [2019-10-14 23:41:19,532 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:19,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179796718] [2019-10-14 23:41:19,533 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:19,533 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:19,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:19,994 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:20,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179796718] [2019-10-14 23:41:20,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:20,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:41:20,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059549960] [2019-10-14 23:41:20,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:41:20,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:20,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:41:20,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:41:20,196 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand 9 states. [2019-10-14 23:41:20,684 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:21,066 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:41:21,359 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:21,638 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:23,258 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2019-10-14 23:41:23,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:41:23,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-10-14 23:41:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:23,263 INFO L225 Difference]: With dead ends: 308 [2019-10-14 23:41:23,264 INFO L226 Difference]: Without dead ends: 183 [2019-10-14 23:41:23,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:41:23,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-14 23:41:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2019-10-14 23:41:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-14 23:41:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2019-10-14 23:41:23,340 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 64 [2019-10-14 23:41:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:23,341 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2019-10-14 23:41:23,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:41:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2019-10-14 23:41:23,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-14 23:41:23,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:23,353 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] [2019-10-14 23:41:23,354 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:23,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1745445590, now seen corresponding path program 1 times [2019-10-14 23:41:23,355 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:23,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005584359] [2019-10-14 23:41:23,355 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:23,355 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:23,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,712 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:23,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005584359] [2019-10-14 23:41:23,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:23,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:41:23,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790993279] [2019-10-14 23:41:23,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:41:23,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:23,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:41:23,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:41:23,806 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 7 states. [2019-10-14 23:41:24,214 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:25,864 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:26,819 INFO L93 Difference]: Finished difference Result 445 states and 574 transitions. [2019-10-14 23:41:26,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:41:26,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2019-10-14 23:41:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:26,823 INFO L225 Difference]: With dead ends: 445 [2019-10-14 23:41:26,824 INFO L226 Difference]: Without dead ends: 320 [2019-10-14 23:41:26,825 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:41:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-14 23:41:26,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 259. [2019-10-14 23:41:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-14 23:41:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 309 transitions. [2019-10-14 23:41:26,890 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 309 transitions. Word has length 77 [2019-10-14 23:41:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:26,891 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 309 transitions. [2019-10-14 23:41:26,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:41:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 309 transitions. [2019-10-14 23:41:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:41:26,893 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:26,893 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] [2019-10-14 23:41:26,893 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1046865649, now seen corresponding path program 1 times [2019-10-14 23:41:26,894 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:26,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247938563] [2019-10-14 23:41:26,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:26,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:26,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,174 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:27,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247938563] [2019-10-14 23:41:27,263 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:27,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:41:27,264 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362279447] [2019-10-14 23:41:27,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:41:27,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:41:27,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:41:27,265 INFO L87 Difference]: Start difference. First operand 259 states and 309 transitions. Second operand 6 states. [2019-10-14 23:41:27,763 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:28,807 INFO L93 Difference]: Finished difference Result 461 states and 552 transitions. [2019-10-14 23:41:28,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:41:28,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-14 23:41:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:28,810 INFO L225 Difference]: With dead ends: 461 [2019-10-14 23:41:28,810 INFO L226 Difference]: Without dead ends: 266 [2019-10-14 23:41:28,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:41:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2019-10-14 23:41:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 229. [2019-10-14 23:41:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-10-14 23:41:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 262 transitions. [2019-10-14 23:41:28,855 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 262 transitions. Word has length 87 [2019-10-14 23:41:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:28,855 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 262 transitions. [2019-10-14 23:41:28,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:41:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 262 transitions. [2019-10-14 23:41:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-14 23:41:28,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:28,857 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] [2019-10-14 23:41:28,857 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1775922839, now seen corresponding path program 1 times [2019-10-14 23:41:28,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:28,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846433255] [2019-10-14 23:41:28,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:28,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:28,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,159 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:41:29,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846433255] [2019-10-14 23:41:29,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:29,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:41:29,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231869469] [2019-10-14 23:41:29,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:41:29,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:41:29,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:41:29,306 INFO L87 Difference]: Start difference. First operand 229 states and 262 transitions. Second operand 9 states. [2019-10-14 23:41:29,750 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:30,410 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:31,405 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:31,722 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:32,166 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:32,424 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:33,010 INFO L93 Difference]: Finished difference Result 472 states and 570 transitions. [2019-10-14 23:41:33,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:41:33,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2019-10-14 23:41:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:33,013 INFO L225 Difference]: With dead ends: 472 [2019-10-14 23:41:33,013 INFO L226 Difference]: Without dead ends: 271 [2019-10-14 23:41:33,014 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:41:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-10-14 23:41:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2019-10-14 23:41:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2019-10-14 23:41:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 259 transitions. [2019-10-14 23:41:33,053 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 259 transitions. Word has length 91 [2019-10-14 23:41:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:33,053 INFO L462 AbstractCegarLoop]: Abstraction has 228 states and 259 transitions. [2019-10-14 23:41:33,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:41:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 259 transitions. [2019-10-14 23:41:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:41:33,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:33,055 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:41:33,056 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:33,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1230791863, now seen corresponding path program 1 times [2019-10-14 23:41:33,056 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:33,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209913532] [2019-10-14 23:41:33,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:33,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:33,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,319 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:33,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209913532] [2019-10-14 23:41:33,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:33,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:41:33,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222226660] [2019-10-14 23:41:33,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:41:33,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:41:33,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:41:33,473 INFO L87 Difference]: Start difference. First operand 228 states and 259 transitions. Second operand 9 states. [2019-10-14 23:41:34,755 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:35,063 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:41:35,340 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:35,619 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:36,522 INFO L93 Difference]: Finished difference Result 472 states and 573 transitions. [2019-10-14 23:41:36,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:41:36,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2019-10-14 23:41:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:36,531 INFO L225 Difference]: With dead ends: 472 [2019-10-14 23:41:36,531 INFO L226 Difference]: Without dead ends: 272 [2019-10-14 23:41:36,532 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:41:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-10-14 23:41:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 233. [2019-10-14 23:41:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-10-14 23:41:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 264 transitions. [2019-10-14 23:41:36,567 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 264 transitions. Word has length 107 [2019-10-14 23:41:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:36,568 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 264 transitions. [2019-10-14 23:41:36,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:41:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 264 transitions. [2019-10-14 23:41:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:41:36,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:36,569 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:41:36,570 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:36,570 INFO L82 PathProgramCache]: Analyzing trace with hash 697480839, now seen corresponding path program 1 times [2019-10-14 23:41:36,570 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:36,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027369133] [2019-10-14 23:41:36,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:36,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:36,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,909 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:37,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027369133] [2019-10-14 23:41:37,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:37,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:41:37,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891029323] [2019-10-14 23:41:37,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:41:37,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:41:37,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:41:37,087 INFO L87 Difference]: Start difference. First operand 233 states and 264 transitions. Second operand 11 states. [2019-10-14 23:41:37,716 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:37,986 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:38,239 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:39,013 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:39,298 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:39,570 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:40,694 INFO L93 Difference]: Finished difference Result 482 states and 584 transitions. [2019-10-14 23:41:40,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:41:40,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2019-10-14 23:41:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:40,697 INFO L225 Difference]: With dead ends: 482 [2019-10-14 23:41:40,697 INFO L226 Difference]: Without dead ends: 277 [2019-10-14 23:41:40,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:41:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-10-14 23:41:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2019-10-14 23:41:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2019-10-14 23:41:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2019-10-14 23:41:40,760 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 107 [2019-10-14 23:41:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:40,762 INFO L462 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2019-10-14 23:41:40,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:41:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2019-10-14 23:41:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:41:40,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:40,770 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:41:40,770 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:40,771 INFO L82 PathProgramCache]: Analyzing trace with hash 456940710, now seen corresponding path program 1 times [2019-10-14 23:41:40,771 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:40,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166729489] [2019-10-14 23:41:40,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:40,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:40,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,085 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:41,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166729489] [2019-10-14 23:41:41,221 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:41,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:41:41,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566090515] [2019-10-14 23:41:41,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:41:41,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:41,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:41:41,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:41:41,223 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand 7 states. [2019-10-14 23:41:41,656 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:42,266 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:44,185 INFO L93 Difference]: Finished difference Result 651 states and 808 transitions. [2019-10-14 23:41:44,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:41:44,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-14 23:41:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:44,189 INFO L225 Difference]: With dead ends: 651 [2019-10-14 23:41:44,189 INFO L226 Difference]: Without dead ends: 442 [2019-10-14 23:41:44,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:41:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2019-10-14 23:41:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 404. [2019-10-14 23:41:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2019-10-14 23:41:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 472 transitions. [2019-10-14 23:41:44,245 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 472 transitions. Word has length 107 [2019-10-14 23:41:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:44,246 INFO L462 AbstractCegarLoop]: Abstraction has 404 states and 472 transitions. [2019-10-14 23:41:44,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:41:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 472 transitions. [2019-10-14 23:41:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-14 23:41:44,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:44,248 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:41:44,248 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:44,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1562894580, now seen corresponding path program 1 times [2019-10-14 23:41:44,249 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:44,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008588918] [2019-10-14 23:41:44,249 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:44,249 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:44,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,578 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:41:44,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008588918] [2019-10-14 23:41:44,746 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:41:44,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:41:44,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798728325] [2019-10-14 23:41:44,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:41:44,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:44,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:41:44,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:41:44,750 INFO L87 Difference]: Start difference. First operand 404 states and 472 transitions. Second operand 12 states. [2019-10-14 23:41:45,347 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:46,024 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:47,088 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:47,425 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:47,744 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-14 23:41:48,035 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:48,351 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:41:49,850 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:41:50,148 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:41:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:41:50,960 INFO L93 Difference]: Finished difference Result 1116 states and 1385 transitions. [2019-10-14 23:41:50,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-14 23:41:50,963 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2019-10-14 23:41:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:41:50,972 INFO L225 Difference]: With dead ends: 1116 [2019-10-14 23:41:50,972 INFO L226 Difference]: Without dead ends: 810 [2019-10-14 23:41:50,974 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-14 23:41:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2019-10-14 23:41:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 700. [2019-10-14 23:41:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-14 23:41:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 810 transitions. [2019-10-14 23:41:51,116 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 810 transitions. Word has length 111 [2019-10-14 23:41:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:41:51,116 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 810 transitions. [2019-10-14 23:41:51,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:41:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 810 transitions. [2019-10-14 23:41:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-14 23:41:51,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:41:51,120 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:41:51,120 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:41:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:41:51,120 INFO L82 PathProgramCache]: Analyzing trace with hash 903450751, now seen corresponding path program 1 times [2019-10-14 23:41:51,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:41:51,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670453513] [2019-10-14 23:41:51,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:51,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:41:51,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:41:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,472 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:41:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:41:51,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670453513] [2019-10-14 23:41:51,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741302924] [2019-10-14 23:41:51,785 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 [2019-10-14 23:41:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:41:52,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 23:41:52,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:41:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:41:52,201 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:41:52,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-14 23:41:52,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312457563] [2019-10-14 23:41:52,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-14 23:41:52,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:41:52,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-14 23:41:52,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:41:52,204 INFO L87 Difference]: Start difference. First operand 700 states and 810 transitions. Second operand 20 states. [2019-10-14 23:41:52,916 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:41:53,304 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-14 23:41:53,611 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:41:53,900 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 196