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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:59:02,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:59:02,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:59:02,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:59:02,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:59:02,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:59:02,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:59:02,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:59:02,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:59:02,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:59:02,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:59:02,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:59:02,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:59:02,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:59:02,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:59:02,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:59:02,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:59:02,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:59:02,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:59:02,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:59:02,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:59:02,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:59:02,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:59:02,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:59:02,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:59:02,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:59:02,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:59:02,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:59:02,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:59:02,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:59:02,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:59:02,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:59:02,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:59:02,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:59:02,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:59:02,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:59:02,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:59:02,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:59:02,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:59:02,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:59:02,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:59:02,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:59:02,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:59:02,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:59:02,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:59:02,887 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:59:02,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:59:02,889 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:59:02,889 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:59:02,889 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:59:02,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:59:02,889 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:59:02,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:59:02,892 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:59:02,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:59:02,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:59:02,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:59:02,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:59:02,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:59:02,893 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:59:02,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:59:02,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:59:02,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:59:02,894 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:59:02,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:59:02,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:59:02,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:59:02,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:59:02,895 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:59:02,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:59:02,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:59:02,896 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:59:02,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:59:02,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:59:02,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:59:02,965 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:59:02,965 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:59:02,967 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2019-10-03 02:59:03,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afeeaf1a/b90b0306b2724b1ebdbc4b79bea1a1df/FLAG54bc959bd [2019-10-03 02:59:03,616 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:59:03,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2019-10-03 02:59:03,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afeeaf1a/b90b0306b2724b1ebdbc4b79bea1a1df/FLAG54bc959bd [2019-10-03 02:59:03,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afeeaf1a/b90b0306b2724b1ebdbc4b79bea1a1df [2019-10-03 02:59:03,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:59:03,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:59:03,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:03,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:59:03,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:59:03,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:03" (1/1) ... [2019-10-03 02:59:03,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2bbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:03, skipping insertion in model container [2019-10-03 02:59:03,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:03" (1/1) ... [2019-10-03 02:59:03,921 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:59:03,989 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:59:04,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:04,419 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:59:04,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:04,581 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:59:04,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04 WrapperNode [2019-10-03 02:59:04,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:04,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:59:04,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:59:04,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:59:04,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... [2019-10-03 02:59:04,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:59:04,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:59:04,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:59:04,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:59:04,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:59:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:59:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:59:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-03 02:59:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-03 02:59:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-03 02:59:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-03 02:59:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-03 02:59:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-03 02:59:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-03 02:59:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-03 02:59:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-03 02:59:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-03 02:59:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-03 02:59:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:59:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-03 02:59:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-03 02:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-03 02:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-03 02:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-03 02:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-03 02:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-03 02:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-03 02:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-03 02:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-03 02:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-03 02:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-03 02:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-03 02:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-03 02:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-03 02:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-03 02:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-03 02:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-03 02:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-03 02:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-03 02:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-03 02:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-03 02:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-03 02:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-03 02:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-03 02:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-03 02:59:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-03 02:59:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:59:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:59:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-03 02:59:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-03 02:59:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:59:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-03 02:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-03 02:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-03 02:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-03 02:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-03 02:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-03 02:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-03 02:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-03 02:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-03 02:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-03 02:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-03 02:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-03 02:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-03 02:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-03 02:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-03 02:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-03 02:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-03 02:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-03 02:59:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-03 02:59:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-03 02:59:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-03 02:59:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-03 02:59:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-03 02:59:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-03 02:59:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-03 02:59:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-03 02:59:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-03 02:59:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-03 02:59:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-03 02:59:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-03 02:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-03 02:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-03 02:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:59:05,895 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:59:05,895 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-03 02:59:05,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:05 BoogieIcfgContainer [2019-10-03 02:59:05,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:59:05,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:59:05,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:59:05,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:59:05,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:59:03" (1/3) ... [2019-10-03 02:59:05,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c50c7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:05, skipping insertion in model container [2019-10-03 02:59:05,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:04" (2/3) ... [2019-10-03 02:59:05,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c50c7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:05, skipping insertion in model container [2019-10-03 02:59:05,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:05" (3/3) ... [2019-10-03 02:59:05,908 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2019-10-03 02:59:05,919 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:59:05,931 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:59:05,948 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:59:05,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:59:05,978 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:59:05,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:59:05,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:59:05,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:59:05,980 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:59:05,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:59:05,981 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:59:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2019-10-03 02:59:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-03 02:59:06,016 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:06,017 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:06,019 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:06,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2019-10-03 02:59:06,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:06,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:06,087 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:06,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:06,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:59:06,444 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:06,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:59:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:59:06,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:06,464 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2019-10-03 02:59:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:06,493 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2019-10-03 02:59:06,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:59:06,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-10-03 02:59:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:06,508 INFO L225 Difference]: With dead ends: 150 [2019-10-03 02:59:06,508 INFO L226 Difference]: Without dead ends: 139 [2019-10-03 02:59:06,510 INFO L640 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 [2019-10-03 02:59:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-03 02:59:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-10-03 02:59:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-03 02:59:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2019-10-03 02:59:06,563 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2019-10-03 02:59:06,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:06,564 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2019-10-03 02:59:06,564 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:59:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2019-10-03 02:59:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-03 02:59:06,568 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:06,568 INFO L411 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] [2019-10-03 02:59:06,569 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2019-10-03 02:59:06,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:06,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:06,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:06,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:06,572 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:06,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:06,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:59:06,690 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:06,692 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:59:06,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:59:06,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:59:06,693 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 3 states. [2019-10-03 02:59:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:06,710 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2019-10-03 02:59:06,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:59:06,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-10-03 02:59:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:06,715 INFO L225 Difference]: With dead ends: 130 [2019-10-03 02:59:06,715 INFO L226 Difference]: Without dead ends: 130 [2019-10-03 02:59:06,716 INFO L640 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 [2019-10-03 02:59:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-03 02:59:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-10-03 02:59:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-03 02:59:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2019-10-03 02:59:06,729 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2019-10-03 02:59:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:06,730 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2019-10-03 02:59:06,730 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:59:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2019-10-03 02:59:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-03 02:59:06,733 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:06,733 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:06,733 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2019-10-03 02:59:06,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:06,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:06,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:06,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:06,737 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:06,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:06,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:59:06,930 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:06,932 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:59:06,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:59:06,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:59:06,933 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 7 states. [2019-10-03 02:59:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:07,406 INFO L93 Difference]: Finished difference Result 288 states and 340 transitions. [2019-10-03 02:59:07,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:59:07,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-10-03 02:59:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:07,412 INFO L225 Difference]: With dead ends: 288 [2019-10-03 02:59:07,412 INFO L226 Difference]: Without dead ends: 288 [2019-10-03 02:59:07,412 INFO L640 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 [2019-10-03 02:59:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-10-03 02:59:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 268. [2019-10-03 02:59:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-03 02:59:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2019-10-03 02:59:07,468 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2019-10-03 02:59:07,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:07,469 INFO L475 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2019-10-03 02:59:07,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:59:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2019-10-03 02:59:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-03 02:59:07,472 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:07,473 INFO L411 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] [2019-10-03 02:59:07,473 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2019-10-03 02:59:07,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:07,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:07,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:07,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:07,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:59:07,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:07,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:59:07,596 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:07,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:59:07,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:59:07,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:59:07,597 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 7 states. [2019-10-03 02:59:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:08,331 INFO L93 Difference]: Finished difference Result 429 states and 529 transitions. [2019-10-03 02:59:08,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-03 02:59:08,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-10-03 02:59:08,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:08,341 INFO L225 Difference]: With dead ends: 429 [2019-10-03 02:59:08,341 INFO L226 Difference]: Without dead ends: 429 [2019-10-03 02:59:08,343 INFO L640 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 [2019-10-03 02:59:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-10-03 02:59:08,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 382. [2019-10-03 02:59:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-10-03 02:59:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 454 transitions. [2019-10-03 02:59:08,416 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 454 transitions. Word has length 70 [2019-10-03 02:59:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:08,417 INFO L475 AbstractCegarLoop]: Abstraction has 382 states and 454 transitions. [2019-10-03 02:59:08,417 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:59:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 454 transitions. [2019-10-03 02:59:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-03 02:59:08,431 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:08,432 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:08,432 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2019-10-03 02:59:08,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:08,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:08,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:08,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:08,442 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:08,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:08,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:59:08,608 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:08,610 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:59:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:59:08,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:59:08,611 INFO L87 Difference]: Start difference. First operand 382 states and 454 transitions. Second operand 4 states. [2019-10-03 02:59:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:08,920 INFO L93 Difference]: Finished difference Result 1052 states and 1308 transitions. [2019-10-03 02:59:08,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:59:08,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-10-03 02:59:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:08,931 INFO L225 Difference]: With dead ends: 1052 [2019-10-03 02:59:08,931 INFO L226 Difference]: Without dead ends: 1052 [2019-10-03 02:59:08,931 INFO L640 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 [2019-10-03 02:59:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-10-03 02:59:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1032. [2019-10-03 02:59:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2019-10-03 02:59:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1269 transitions. [2019-10-03 02:59:08,988 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1269 transitions. Word has length 102 [2019-10-03 02:59:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:08,989 INFO L475 AbstractCegarLoop]: Abstraction has 1032 states and 1269 transitions. [2019-10-03 02:59:08,989 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:59:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1269 transitions. [2019-10-03 02:59:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-03 02:59:08,997 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:08,998 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:08,998 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2019-10-03 02:59:08,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:09,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:09,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:09,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:09,002 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:09,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:09,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:59:09,114 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:09,115 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:59:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:59:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:59:09,115 INFO L87 Difference]: Start difference. First operand 1032 states and 1269 transitions. Second operand 6 states. [2019-10-03 02:59:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:09,163 INFO L93 Difference]: Finished difference Result 1074 states and 1321 transitions. [2019-10-03 02:59:09,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:59:09,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-10-03 02:59:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:09,174 INFO L225 Difference]: With dead ends: 1074 [2019-10-03 02:59:09,175 INFO L226 Difference]: Without dead ends: 1074 [2019-10-03 02:59:09,175 INFO L640 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 [2019-10-03 02:59:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2019-10-03 02:59:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1062. [2019-10-03 02:59:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2019-10-03 02:59:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1301 transitions. [2019-10-03 02:59:09,229 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1301 transitions. Word has length 102 [2019-10-03 02:59:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:09,230 INFO L475 AbstractCegarLoop]: Abstraction has 1062 states and 1301 transitions. [2019-10-03 02:59:09,230 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:59:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1301 transitions. [2019-10-03 02:59:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-03 02:59:09,236 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:09,236 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:09,236 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:09,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2019-10-03 02:59:09,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:09,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:09,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:09,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:09,241 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:09,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:09,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:59:09,341 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:09,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:59:09,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:59:09,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:59:09,343 INFO L87 Difference]: Start difference. First operand 1062 states and 1301 transitions. Second operand 8 states. [2019-10-03 02:59:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:09,375 INFO L93 Difference]: Finished difference Result 863 states and 1044 transitions. [2019-10-03 02:59:09,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:59:09,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-10-03 02:59:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:09,380 INFO L225 Difference]: With dead ends: 863 [2019-10-03 02:59:09,381 INFO L226 Difference]: Without dead ends: 863 [2019-10-03 02:59:09,381 INFO L640 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 [2019-10-03 02:59:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-10-03 02:59:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2019-10-03 02:59:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-10-03 02:59:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1044 transitions. [2019-10-03 02:59:09,421 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1044 transitions. Word has length 102 [2019-10-03 02:59:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:09,421 INFO L475 AbstractCegarLoop]: Abstraction has 863 states and 1044 transitions. [2019-10-03 02:59:09,421 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:59:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1044 transitions. [2019-10-03 02:59:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-03 02:59:09,425 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:09,425 INFO L411 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] [2019-10-03 02:59:09,425 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:09,426 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2019-10-03 02:59:09,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:09,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:09,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:09,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:09,428 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:09,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:09,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-03 02:59:09,621 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:09,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-03 02:59:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-03 02:59:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:59:09,623 INFO L87 Difference]: Start difference. First operand 863 states and 1044 transitions. Second operand 9 states. [2019-10-03 02:59:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:10,680 INFO L93 Difference]: Finished difference Result 1711 states and 2072 transitions. [2019-10-03 02:59:10,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-03 02:59:10,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-03 02:59:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:10,692 INFO L225 Difference]: With dead ends: 1711 [2019-10-03 02:59:10,692 INFO L226 Difference]: Without dead ends: 1711 [2019-10-03 02:59:10,693 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-10-03 02:59:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2019-10-03 02:59:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1516. [2019-10-03 02:59:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2019-10-03 02:59:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1816 transitions. [2019-10-03 02:59:10,785 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1816 transitions. Word has length 106 [2019-10-03 02:59:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:10,789 INFO L475 AbstractCegarLoop]: Abstraction has 1516 states and 1816 transitions. [2019-10-03 02:59:10,789 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-03 02:59:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1816 transitions. [2019-10-03 02:59:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-03 02:59:10,794 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:10,794 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:10,795 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:10,795 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2019-10-03 02:59:10,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:10,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:10,800 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-03 02:59:11,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:59:11,049 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:59:11,052 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2019-10-03 02:59:11,057 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [122], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [170], [195], [197], [202], [205], [206], [208], [213], [215], [216], [217], [218], [222], [225], [229], [235], [262], [263], [266], [270], [273], [277], [278], [281], [282], [283], [285], [286], [287], [289], [292], [294], [297], [300], [309], [311], [312], [313], [337], [339], [340], [358], [359], [409], [410], [420], [428], [429], [430], [431], [432], [433], [434], [435], [436], [470], [471], [472], [473], [476], [477], [478], [479], [484], [485], [488], [489], [490], [491], [492], [493], [494], [495], [496], [497], [498], [499], [500], [501], [506], [507], [508], [509], [510], [511], [512], [516], [517], [518], [520], [521], [526], [527], [528] [2019-10-03 02:59:11,112 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:59:11,112 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:59:11,200 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:59:11,202 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-10-03 02:59:11,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:11,206 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:59:11,258 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:59:11,258 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:59:11,263 INFO L420 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2019-10-03 02:59:11,263 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:59:11,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:59:11,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-10-03 02:59:11,264 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:11,265 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:59:11,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:59:11,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:11,266 INFO L87 Difference]: Start difference. First operand 1516 states and 1816 transitions. Second operand 2 states. [2019-10-03 02:59:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:11,266 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:59:11,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:59:11,267 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 149 [2019-10-03 02:59:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:11,267 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:59:11,267 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:59:11,267 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:59:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:59:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:59:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:59:11,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2019-10-03 02:59:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:11,269 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:59:11,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:59:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:59:11,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:59:11,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:59:11 BoogieIcfgContainer [2019-10-03 02:59:11,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:59:11,277 INFO L168 Benchmark]: Toolchain (without parser) took 7376.33 ms. Allocated memory was 132.1 MB in the beginning and 335.0 MB in the end (delta: 202.9 MB). Free memory was 87.3 MB in the beginning and 270.1 MB in the end (delta: -182.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:11,278 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:59:11,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.65 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 163.8 MB in the end (delta: -76.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:11,280 INFO L168 Benchmark]: Boogie Preprocessor took 115.99 ms. Allocated memory is still 199.2 MB. Free memory was 163.8 MB in the beginning and 159.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:11,281 INFO L168 Benchmark]: RCFGBuilder took 1198.06 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 159.3 MB in the beginning and 188.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:11,282 INFO L168 Benchmark]: TraceAbstraction took 5375.87 ms. Allocated memory was 221.8 MB in the beginning and 335.0 MB in the end (delta: 113.2 MB). Free memory was 188.2 MB in the beginning and 270.1 MB in the end (delta: -81.9 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:11,287 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.65 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 163.8 MB in the end (delta: -76.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.99 ms. Allocated memory is still 199.2 MB. Free memory was 163.8 MB in the beginning and 159.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1198.06 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 159.3 MB in the beginning and 188.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5375.87 ms. Allocated memory was 221.8 MB in the beginning and 335.0 MB in the end (delta: 113.2 MB). Free memory was 188.2 MB in the beginning and 270.1 MB in the end (delta: -81.9 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 961]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 238 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1431 SDtfs, 1062 SDslu, 3185 SDs, 0 SdLazy, 1555 SolverSat, 301 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1516occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8581081081081081 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 294 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 814 NumberOfCodeBlocks, 814 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 127284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 57/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...