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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:08:15,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:08:15,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:08:15,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:08:15,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:08:15,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:08:15,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:08:15,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:08:15,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:08:15,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:08:15,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:08:15,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:08:15,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:08:15,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:08:15,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:08:15,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:08:15,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:08:15,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:08:15,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:08:15,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:08:15,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:08:15,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:08:15,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:08:15,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:08:15,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:08:15,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:08:15,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:08:15,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:08:15,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:08:15,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:08:15,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:08:15,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:08:15,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:08:15,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:08:15,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:08:15,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:08:15,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:08:15,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:08:15,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:08:15,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:08:15,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:08:15,911 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 [2019-09-20 13:08:15,926 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:08:15,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:08:15,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:08:15,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:08:15,928 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:08:15,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:08:15,929 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:08:15,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:08:15,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:08:15,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:08:15,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:08:15,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:08:15,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:08:15,930 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:08:15,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:08:15,931 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:08:15,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:08:15,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:08:15,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:08:15,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:08:15,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:08:15,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:15,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:08:15,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:08:15,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:08:15,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:08:15,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:08:15,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:08:15,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:08:15,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:08:15,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:08:15,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:08:15,987 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:08:15,988 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:08:15,989 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-09-20 13:08:16,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b0555a5/0be462ad03e24bd694803ff547549ea5/FLAGf8bb0d87b [2019-09-20 13:08:16,599 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:08:16,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-09-20 13:08:16,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b0555a5/0be462ad03e24bd694803ff547549ea5/FLAGf8bb0d87b [2019-09-20 13:08:16,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b0555a5/0be462ad03e24bd694803ff547549ea5 [2019-09-20 13:08:16,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:08:16,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:08:16,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:16,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:08:16,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:08:16,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:16" (1/1) ... [2019-09-20 13:08:16,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2686e1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:16, skipping insertion in model container [2019-09-20 13:08:16,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:16" (1/1) ... [2019-09-20 13:08:16,936 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:08:17,002 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:08:17,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:17,487 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:08:17,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:17,654 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:08:17,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17 WrapperNode [2019-09-20 13:08:17,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:17,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:08:17,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:08:17,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:08:17,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:08:17,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:08:17,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:08:17,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:08:17,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (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 [2019-09-20 13:08:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:08:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:08:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:08:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:08:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:08:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:08:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:08:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:08:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:08:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:08:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:08:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:08:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:08:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:08:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:08:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:08:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:08:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:08:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:08:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:08:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:08:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:08:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:08:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:08:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:08:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:08:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:08:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:08:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:08:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:08:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:08:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:08:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:08:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:08:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:08:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:08:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:08:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:08:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:08:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:08:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:08:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:08:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:08:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:08:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:08:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:08:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:08:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:08:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:08:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:08:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:08:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:08:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:08:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:08:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:08:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:08:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:08:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:08:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:08:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:08:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:08:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:08:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:08:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:08:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:08:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:08:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:08:18,945 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:08:18,945 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:08:18,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:18 BoogieIcfgContainer [2019-09-20 13:08:18,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:08:18,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:08:18,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:08:18,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:08:18,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:08:16" (1/3) ... [2019-09-20 13:08:18,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e5224d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:18, skipping insertion in model container [2019-09-20 13:08:18,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17" (2/3) ... [2019-09-20 13:08:18,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e5224d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:18, skipping insertion in model container [2019-09-20 13:08:18,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:18" (3/3) ... [2019-09-20 13:08:18,957 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2019-09-20 13:08:18,969 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:08:18,979 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:08:18,998 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:08:19,034 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:08:19,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:08:19,035 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:08:19,035 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:08:19,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:08:19,036 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:08:19,036 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:08:19,036 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:08:19,037 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:08:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2019-09-20 13:08:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:08:19,075 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,077 INFO L407 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] [2019-09-20 13:08:19,080 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash -304783320, now seen corresponding path program 1 times [2019-09-20 13:08:19,089 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:19,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:19,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:08:19,504 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:19,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:19,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:19,522 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2019-09-20 13:08:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,573 INFO L93 Difference]: Finished difference Result 342 states and 423 transitions. [2019-09-20 13:08:19,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:19,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,589 INFO L225 Difference]: With dead ends: 342 [2019-09-20 13:08:19,590 INFO L226 Difference]: Without dead ends: 173 [2019-09-20 13:08:19,595 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-09-20 13:08:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2019-09-20 13:08:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-09-20 13:08:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 205 transitions. [2019-09-20 13:08:19,664 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 205 transitions. Word has length 59 [2019-09-20 13:08:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,665 INFO L475 AbstractCegarLoop]: Abstraction has 173 states and 205 transitions. [2019-09-20 13:08:19,665 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 205 transitions. [2019-09-20 13:08:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:19,671 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,671 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:19,672 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,672 INFO L82 PathProgramCache]: Analyzing trace with hash -511503066, now seen corresponding path program 1 times [2019-09-20 13:08:19,672 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:19,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:19,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:19,810 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:19,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:19,811 INFO L87 Difference]: Start difference. First operand 173 states and 205 transitions. Second operand 3 states. [2019-09-20 13:08:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,855 INFO L93 Difference]: Finished difference Result 281 states and 333 transitions. [2019-09-20 13:08:19,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:19,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,859 INFO L225 Difference]: With dead ends: 281 [2019-09-20 13:08:19,859 INFO L226 Difference]: Without dead ends: 164 [2019-09-20 13:08:19,861 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-09-20 13:08:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2019-09-20 13:08:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-09-20 13:08:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2019-09-20 13:08:19,879 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 60 [2019-09-20 13:08:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,879 INFO L475 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2019-09-20 13:08:19,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2019-09-20 13:08:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:08:19,883 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,883 INFO L407 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] [2019-09-20 13:08:19,883 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1192401668, now seen corresponding path program 1 times [2019-09-20 13:08:19,884 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:20,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:20,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:20,059 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:20,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:20,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:20,060 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 7 states. [2019-09-20 13:08:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:20,695 INFO L93 Difference]: Finished difference Result 492 states and 599 transitions. [2019-09-20 13:08:20,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:20,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:08:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:20,708 INFO L225 Difference]: With dead ends: 492 [2019-09-20 13:08:20,708 INFO L226 Difference]: Without dead ends: 356 [2019-09-20 13:08:20,712 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:20,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-09-20 13:08:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 344. [2019-09-20 13:08:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-09-20 13:08:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 418 transitions. [2019-09-20 13:08:20,809 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 418 transitions. Word has length 65 [2019-09-20 13:08:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:20,810 INFO L475 AbstractCegarLoop]: Abstraction has 344 states and 418 transitions. [2019-09-20 13:08:20,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 418 transitions. [2019-09-20 13:08:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:08:20,819 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:20,819 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:20,821 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1231670033, now seen corresponding path program 1 times [2019-09-20 13:08:20,822 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:20,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:20,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:21,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:21,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:21,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:21,007 INFO L87 Difference]: Start difference. First operand 344 states and 418 transitions. Second operand 7 states. [2019-09-20 13:08:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:21,830 INFO L93 Difference]: Finished difference Result 880 states and 1134 transitions. [2019-09-20 13:08:21,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:21,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:08:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:21,836 INFO L225 Difference]: With dead ends: 880 [2019-09-20 13:08:21,836 INFO L226 Difference]: Without dead ends: 564 [2019-09-20 13:08:21,838 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-09-20 13:08:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 510. [2019-09-20 13:08:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-09-20 13:08:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2019-09-20 13:08:21,909 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 70 [2019-09-20 13:08:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:21,910 INFO L475 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2019-09-20 13:08:21,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2019-09-20 13:08:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:08:21,913 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:21,913 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:21,914 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:21,914 INFO L82 PathProgramCache]: Analyzing trace with hash 853087743, now seen corresponding path program 1 times [2019-09-20 13:08:21,914 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:21,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:21,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:21,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:21,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:22,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:22,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:22,021 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:22,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:22,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:22,022 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand 6 states. [2019-09-20 13:08:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:22,078 INFO L93 Difference]: Finished difference Result 1006 states and 1242 transitions. [2019-09-20 13:08:22,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:22,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2019-09-20 13:08:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:22,083 INFO L225 Difference]: With dead ends: 1006 [2019-09-20 13:08:22,083 INFO L226 Difference]: Without dead ends: 524 [2019-09-20 13:08:22,085 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-09-20 13:08:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 520. [2019-09-20 13:08:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-09-20 13:08:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2019-09-20 13:08:22,123 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 113 [2019-09-20 13:08:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:22,124 INFO L475 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2019-09-20 13:08:22,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2019-09-20 13:08:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:08:22,126 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:22,126 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:22,127 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1502717507, now seen corresponding path program 1 times [2019-09-20 13:08:22,127 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:22,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:22,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:22,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:22,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:22,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:22,223 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:22,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:22,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:22,223 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 8 states. [2019-09-20 13:08:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:22,270 INFO L93 Difference]: Finished difference Result 1026 states and 1262 transitions. [2019-09-20 13:08:22,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:22,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2019-09-20 13:08:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:22,274 INFO L225 Difference]: With dead ends: 1026 [2019-09-20 13:08:22,275 INFO L226 Difference]: Without dead ends: 534 [2019-09-20 13:08:22,277 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-09-20 13:08:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 528. [2019-09-20 13:08:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2019-09-20 13:08:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 627 transitions. [2019-09-20 13:08:22,310 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 627 transitions. Word has length 113 [2019-09-20 13:08:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:22,311 INFO L475 AbstractCegarLoop]: Abstraction has 528 states and 627 transitions. [2019-09-20 13:08:22,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 627 transitions. [2019-09-20 13:08:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:08:22,313 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:22,314 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:22,314 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash -733547492, now seen corresponding path program 1 times [2019-09-20 13:08:22,315 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:22,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:22,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:22,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:22,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:22,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:22,421 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:22,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:22,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:22,422 INFO L87 Difference]: Start difference. First operand 528 states and 627 transitions. Second operand 4 states. [2019-09-20 13:08:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:22,714 INFO L93 Difference]: Finished difference Result 1646 states and 2048 transitions. [2019-09-20 13:08:22,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:22,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-09-20 13:08:22,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:22,722 INFO L225 Difference]: With dead ends: 1646 [2019-09-20 13:08:22,722 INFO L226 Difference]: Without dead ends: 1146 [2019-09-20 13:08:22,724 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2019-09-20 13:08:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1129. [2019-09-20 13:08:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2019-09-20 13:08:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1380 transitions. [2019-09-20 13:08:22,802 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1380 transitions. Word has length 113 [2019-09-20 13:08:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:22,803 INFO L475 AbstractCegarLoop]: Abstraction has 1129 states and 1380 transitions. [2019-09-20 13:08:22,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1380 transitions. [2019-09-20 13:08:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-20 13:08:22,806 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:22,806 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:22,806 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:22,807 INFO L82 PathProgramCache]: Analyzing trace with hash 216342370, now seen corresponding path program 1 times [2019-09-20 13:08:22,807 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:22,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:22,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:22,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:22,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:22,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:22,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:22,995 INFO L87 Difference]: Start difference. First operand 1129 states and 1380 transitions. Second operand 9 states. [2019-09-20 13:08:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:24,514 INFO L93 Difference]: Finished difference Result 3084 states and 3936 transitions. [2019-09-20 13:08:24,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:24,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-09-20 13:08:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:24,529 INFO L225 Difference]: With dead ends: 3084 [2019-09-20 13:08:24,529 INFO L226 Difference]: Without dead ends: 2179 [2019-09-20 13:08:24,534 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2019-09-20 13:08:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1940. [2019-09-20 13:08:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2019-09-20 13:08:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2331 transitions. [2019-09-20 13:08:24,670 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2331 transitions. Word has length 117 [2019-09-20 13:08:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:24,670 INFO L475 AbstractCegarLoop]: Abstraction has 1940 states and 2331 transitions. [2019-09-20 13:08:24,670 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2331 transitions. [2019-09-20 13:08:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-20 13:08:24,675 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:24,675 INFO L407 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, 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, 1, 1, 1] [2019-09-20 13:08:24,676 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1963590153, now seen corresponding path program 1 times [2019-09-20 13:08:24,676 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:24,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:24,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-20 13:08:24,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:24,878 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:24,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:25,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:25,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:25,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:25,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:25,295 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:25,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:25,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:25,296 INFO L87 Difference]: Start difference. First operand 1940 states and 2331 transitions. Second operand 16 states. [2019-09-20 13:08:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:26,866 INFO L93 Difference]: Finished difference Result 4381 states and 5468 transitions. [2019-09-20 13:08:26,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:26,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2019-09-20 13:08:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:26,882 INFO L225 Difference]: With dead ends: 4381 [2019-09-20 13:08:26,882 INFO L226 Difference]: Without dead ends: 2659 [2019-09-20 13:08:26,889 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:08:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2019-09-20 13:08:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2397. [2019-09-20 13:08:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2019-09-20 13:08:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 2829 transitions. [2019-09-20 13:08:27,044 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 2829 transitions. Word has length 195 [2019-09-20 13:08:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:27,044 INFO L475 AbstractCegarLoop]: Abstraction has 2397 states and 2829 transitions. [2019-09-20 13:08:27,044 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 2829 transitions. [2019-09-20 13:08:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2019-09-20 13:08:27,055 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:27,056 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:27,056 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:27,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:27,057 INFO L82 PathProgramCache]: Analyzing trace with hash 905718191, now seen corresponding path program 1 times [2019-09-20 13:08:27,057 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:27,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:27,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-09-20 13:08:27,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:27,354 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:27,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:27,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:27,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 243 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:27,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:27,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:27,932 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:27,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:27,934 INFO L87 Difference]: Start difference. First operand 2397 states and 2829 transitions. Second operand 19 states. [2019-09-20 13:08:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:36,384 INFO L93 Difference]: Finished difference Result 9435 states and 13417 transitions. [2019-09-20 13:08:36,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-20 13:08:36,385 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 335 [2019-09-20 13:08:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:36,448 INFO L225 Difference]: With dead ends: 9435 [2019-09-20 13:08:36,448 INFO L226 Difference]: Without dead ends: 7074 [2019-09-20 13:08:36,473 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=679, Invalid=4577, Unknown=0, NotChecked=0, Total=5256 [2019-09-20 13:08:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2019-09-20 13:08:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 5053. [2019-09-20 13:08:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5053 states. [2019-09-20 13:08:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 5784 transitions. [2019-09-20 13:08:36,996 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 5784 transitions. Word has length 335 [2019-09-20 13:08:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:36,997 INFO L475 AbstractCegarLoop]: Abstraction has 5053 states and 5784 transitions. [2019-09-20 13:08:36,997 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 5784 transitions. [2019-09-20 13:08:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-09-20 13:08:37,021 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:37,021 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:37,022 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:37,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:37,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1265210463, now seen corresponding path program 1 times [2019-09-20 13:08:37,022 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:37,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:37,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:37,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:37,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 100 proven. 63 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-20 13:08:37,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:37,352 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:37,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:37,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:08:37,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 280 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-20 13:08:37,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:37,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:37,905 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:37,906 INFO L87 Difference]: Start difference. First operand 5053 states and 5784 transitions. Second operand 20 states. [2019-09-20 13:08:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:40,401 INFO L93 Difference]: Finished difference Result 9656 states and 11118 transitions. [2019-09-20 13:08:40,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:40,401 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 351 [2019-09-20 13:08:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:40,435 INFO L225 Difference]: With dead ends: 9656 [2019-09-20 13:08:40,435 INFO L226 Difference]: Without dead ends: 5069 [2019-09-20 13:08:40,450 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2019-09-20 13:08:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 5057. [2019-09-20 13:08:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5057 states. [2019-09-20 13:08:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 5778 transitions. [2019-09-20 13:08:40,835 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 5778 transitions. Word has length 351 [2019-09-20 13:08:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:40,836 INFO L475 AbstractCegarLoop]: Abstraction has 5057 states and 5778 transitions. [2019-09-20 13:08:40,836 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 5778 transitions. [2019-09-20 13:08:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2019-09-20 13:08:40,858 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:40,859 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:40,859 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:40,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1607737082, now seen corresponding path program 1 times [2019-09-20 13:08:40,859 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:40,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:40,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:40,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:40,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-09-20 13:08:41,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:41,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-20 13:08:41,126 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:41,126 INFO L87 Difference]: Start difference. First operand 5057 states and 5778 transitions. Second operand 13 states. [2019-09-20 13:08:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:42,277 INFO L93 Difference]: Finished difference Result 9444 states and 10875 transitions. [2019-09-20 13:08:42,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:08:42,278 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 352 [2019-09-20 13:08:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:42,307 INFO L225 Difference]: With dead ends: 9444 [2019-09-20 13:08:42,307 INFO L226 Difference]: Without dead ends: 4853 [2019-09-20 13:08:42,320 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:08:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2019-09-20 13:08:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4801. [2019-09-20 13:08:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4801 states. [2019-09-20 13:08:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5463 transitions. [2019-09-20 13:08:42,687 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5463 transitions. Word has length 352 [2019-09-20 13:08:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:42,689 INFO L475 AbstractCegarLoop]: Abstraction has 4801 states and 5463 transitions. [2019-09-20 13:08:42,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5463 transitions. [2019-09-20 13:08:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2019-09-20 13:08:42,707 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:42,707 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:42,707 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:42,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash -331371872, now seen corresponding path program 1 times [2019-09-20 13:08:42,708 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:42,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:42,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:42,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:42,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 98 proven. 46 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-09-20 13:08:43,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:43,036 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:43,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:43,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:43,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 206 proven. 16 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-09-20 13:08:43,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:43,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:43,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:43,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:43,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:43,456 INFO L87 Difference]: Start difference. First operand 4801 states and 5463 transitions. Second operand 14 states. [2019-09-20 13:08:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:46,662 INFO L93 Difference]: Finished difference Result 10848 states and 13522 transitions. [2019-09-20 13:08:46,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:46,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 356 [2019-09-20 13:08:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:46,705 INFO L225 Difference]: With dead ends: 10848 [2019-09-20 13:08:46,705 INFO L226 Difference]: Without dead ends: 7971 [2019-09-20 13:08:46,717 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7971 states. [2019-09-20 13:08:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7971 to 6043. [2019-09-20 13:08:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6043 states. [2019-09-20 13:08:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6043 states to 6043 states and 6881 transitions. [2019-09-20 13:08:47,095 INFO L78 Accepts]: Start accepts. Automaton has 6043 states and 6881 transitions. Word has length 356 [2019-09-20 13:08:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:47,096 INFO L475 AbstractCegarLoop]: Abstraction has 6043 states and 6881 transitions. [2019-09-20 13:08:47,096 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6043 states and 6881 transitions. [2019-09-20 13:08:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2019-09-20 13:08:47,123 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:47,123 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:47,124 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2110200762, now seen corresponding path program 1 times [2019-09-20 13:08:47,124 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:47,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:47,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:47,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:47,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 88 proven. 12 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2019-09-20 13:08:47,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:47,487 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:47,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:47,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:08:47,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:48,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:48,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-20 13:08:48,034 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:48,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:48,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:48,035 INFO L87 Difference]: Start difference. First operand 6043 states and 6881 transitions. Second operand 4 states. [2019-09-20 13:08:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:48,397 INFO L93 Difference]: Finished difference Result 9789 states and 11178 transitions. [2019-09-20 13:08:48,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:48,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2019-09-20 13:08:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:48,423 INFO L225 Difference]: With dead ends: 9789 [2019-09-20 13:08:48,424 INFO L226 Difference]: Without dead ends: 3832 [2019-09-20 13:08:48,436 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2019-09-20 13:08:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3742. [2019-09-20 13:08:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2019-09-20 13:08:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4202 transitions. [2019-09-20 13:08:48,809 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4202 transitions. Word has length 435 [2019-09-20 13:08:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:48,810 INFO L475 AbstractCegarLoop]: Abstraction has 3742 states and 4202 transitions. [2019-09-20 13:08:48,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4202 transitions. [2019-09-20 13:08:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2019-09-20 13:08:48,821 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:48,822 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:48,822 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash 637778495, now seen corresponding path program 1 times [2019-09-20 13:08:48,822 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:48,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:48,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:48,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:48,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 119 proven. 56 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2019-09-20 13:08:49,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:49,137 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:49,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY