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_spec2_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:19,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:19,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:19,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:19,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:19,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:19,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:19,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:19,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:19,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:19,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:19,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:19,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:19,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:19,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:19,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:19,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:19,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:19,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:19,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:19,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:19,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:19,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:19,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:19,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:19,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:19,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:19,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:19,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:19,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:19,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:19,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:19,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:19,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:19,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:19,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:19,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:19,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:19,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:19,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:19,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:19,886 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 [2019-09-20 13:30:19,905 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:19,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:19,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:19,906 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:19,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:19,907 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:19,907 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:19,908 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:19,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:19,908 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:19,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:19,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:19,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:19,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:19,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:19,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:19,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:19,910 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:19,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:19,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:19,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:19,911 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:19,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:19,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:19,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:19,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:19,912 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:19,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:19,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:19,913 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:19,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:19,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:19,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:19,960 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:19,961 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:19,962 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-09-20 13:30:20,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b618c2f/bb257e8350d145dbabfd7c715c2cc0b2/FLAG595d7ae9f [2019-09-20 13:30:20,567 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:20,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-09-20 13:30:20,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b618c2f/bb257e8350d145dbabfd7c715c2cc0b2/FLAG595d7ae9f [2019-09-20 13:30:20,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b618c2f/bb257e8350d145dbabfd7c715c2cc0b2 [2019-09-20 13:30:20,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:20,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:20,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:20,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:20,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:20,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:20" (1/1) ... [2019-09-20 13:30:20,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7b28bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:20, skipping insertion in model container [2019-09-20 13:30:20,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:20" (1/1) ... [2019-09-20 13:30:20,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:20,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:21,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:21,454 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:21,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:21,584 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:21,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21 WrapperNode [2019-09-20 13:30:21,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:21,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:21,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:21,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:21,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:21,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:21,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:21,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:21,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (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 13:30:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:21,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:30:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:22,905 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:22,906 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:22,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:22 BoogieIcfgContainer [2019-09-20 13:30:22,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:22,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:22,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:22,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:20" (1/3) ... [2019-09-20 13:30:22,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd01ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:22, skipping insertion in model container [2019-09-20 13:30:22,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21" (2/3) ... [2019-09-20 13:30:22,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd01ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:22, skipping insertion in model container [2019-09-20 13:30:22,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:22" (3/3) ... [2019-09-20 13:30:22,917 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2019-09-20 13:30:22,927 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:22,936 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:22,954 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:22,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:22,983 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:22,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:22,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:22,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:22,983 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:22,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:22,984 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2019-09-20 13:30:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:23,018 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:23,020 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:23,025 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:23,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:23,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2013010426, now seen corresponding path program 1 times [2019-09-20 13:30:23,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:23,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:23,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:23,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:23,092 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:23,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:23,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:23,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:23,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:23,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:23,485 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 2 states. [2019-09-20 13:30:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:23,542 INFO L93 Difference]: Finished difference Result 162 states and 190 transitions. [2019-09-20 13:30:23,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:23,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:23,566 INFO L225 Difference]: With dead ends: 162 [2019-09-20 13:30:23,566 INFO L226 Difference]: Without dead ends: 151 [2019-09-20 13:30:23,574 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 13:30:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-20 13:30:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-20 13:30:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-20 13:30:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2019-09-20 13:30:23,677 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 51 [2019-09-20 13:30:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:23,677 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2019-09-20 13:30:23,678 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2019-09-20 13:30:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:23,690 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:23,691 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:23,691 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:23,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1660126963, now seen corresponding path program 1 times [2019-09-20 13:30:23,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:23,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:23,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:23,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:23,696 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:23,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:23,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:23,880 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:23,881 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:23,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:23,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:23,882 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 3 states. [2019-09-20 13:30:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:23,899 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2019-09-20 13:30:23,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:23,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:23,902 INFO L225 Difference]: With dead ends: 142 [2019-09-20 13:30:23,903 INFO L226 Difference]: Without dead ends: 142 [2019-09-20 13:30:23,904 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 13:30:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-09-20 13:30:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-09-20 13:30:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-09-20 13:30:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2019-09-20 13:30:23,916 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 52 [2019-09-20 13:30:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:23,916 INFO L475 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2019-09-20 13:30:23,916 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2019-09-20 13:30:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-20 13:30:23,918 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:23,918 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:23,919 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1605789181, now seen corresponding path program 1 times [2019-09-20 13:30:23,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:23,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:23,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:23,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:23,923 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:24,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:24,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:24,108 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:24,109 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:24,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:24,110 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 7 states. [2019-09-20 13:30:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:24,650 INFO L93 Difference]: Finished difference Result 307 states and 368 transitions. [2019-09-20 13:30:24,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:24,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-20 13:30:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:24,664 INFO L225 Difference]: With dead ends: 307 [2019-09-20 13:30:24,666 INFO L226 Difference]: Without dead ends: 307 [2019-09-20 13:30:24,667 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 13:30:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-09-20 13:30:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 299. [2019-09-20 13:30:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2019-09-20 13:30:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 362 transitions. [2019-09-20 13:30:24,737 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 362 transitions. Word has length 56 [2019-09-20 13:30:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:24,738 INFO L475 AbstractCegarLoop]: Abstraction has 299 states and 362 transitions. [2019-09-20 13:30:24,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 362 transitions. [2019-09-20 13:30:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-20 13:30:24,774 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:24,774 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:24,775 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:24,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:24,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1990007725, now seen corresponding path program 1 times [2019-09-20 13:30:24,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:24,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:24,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,778 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:24,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:24,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:24,887 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:24,887 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:24,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:24,888 INFO L87 Difference]: Start difference. First operand 299 states and 362 transitions. Second operand 6 states. [2019-09-20 13:30:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:25,146 INFO L93 Difference]: Finished difference Result 552 states and 670 transitions. [2019-09-20 13:30:25,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:25,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-20 13:30:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:25,153 INFO L225 Difference]: With dead ends: 552 [2019-09-20 13:30:25,153 INFO L226 Difference]: Without dead ends: 552 [2019-09-20 13:30:25,153 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-09-20 13:30:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 546. [2019-09-20 13:30:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-09-20 13:30:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 664 transitions. [2019-09-20 13:30:25,194 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 664 transitions. Word has length 62 [2019-09-20 13:30:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:25,195 INFO L475 AbstractCegarLoop]: Abstraction has 546 states and 664 transitions. [2019-09-20 13:30:25,195 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 664 transitions. [2019-09-20 13:30:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-20 13:30:25,197 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:25,197 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:25,198 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:25,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1656310289, now seen corresponding path program 1 times [2019-09-20 13:30:25,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:25,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:25,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:25,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:25,201 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:25,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:25,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:25,333 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:25,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:25,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:25,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:25,337 INFO L87 Difference]: Start difference. First operand 546 states and 664 transitions. Second operand 7 states. [2019-09-20 13:30:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,102 INFO L93 Difference]: Finished difference Result 871 states and 1102 transitions. [2019-09-20 13:30:26,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:26,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-20 13:30:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,111 INFO L225 Difference]: With dead ends: 871 [2019-09-20 13:30:26,112 INFO L226 Difference]: Without dead ends: 871 [2019-09-20 13:30:26,112 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 13:30:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-09-20 13:30:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 775. [2019-09-20 13:30:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2019-09-20 13:30:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 939 transitions. [2019-09-20 13:30:26,184 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 939 transitions. Word has length 66 [2019-09-20 13:30:26,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,187 INFO L475 AbstractCegarLoop]: Abstraction has 775 states and 939 transitions. [2019-09-20 13:30:26,187 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:26,187 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 939 transitions. [2019-09-20 13:30:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:30:26,194 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,194 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] [2019-09-20 13:30:26,194 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1069328684, now seen corresponding path program 1 times [2019-09-20 13:30:26,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,199 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,342 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 13:30:26,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:26,343 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:26,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:26,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:26,344 INFO L87 Difference]: Start difference. First operand 775 states and 939 transitions. Second operand 6 states. [2019-09-20 13:30:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,391 INFO L93 Difference]: Finished difference Result 803 states and 971 transitions. [2019-09-20 13:30:26,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:26,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-20 13:30:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,400 INFO L225 Difference]: With dead ends: 803 [2019-09-20 13:30:26,400 INFO L226 Difference]: Without dead ends: 803 [2019-09-20 13:30:26,401 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 13:30:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-09-20 13:30:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 795. [2019-09-20 13:30:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-09-20 13:30:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 959 transitions. [2019-09-20 13:30:26,443 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 959 transitions. Word has length 103 [2019-09-20 13:30:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,444 INFO L475 AbstractCegarLoop]: Abstraction has 795 states and 959 transitions. [2019-09-20 13:30:26,444 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 959 transitions. [2019-09-20 13:30:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:30:26,448 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,448 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] [2019-09-20 13:30:26,449 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,449 INFO L82 PathProgramCache]: Analyzing trace with hash 858944018, now seen corresponding path program 1 times [2019-09-20 13:30:26,449 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,455 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,560 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 13:30:26,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:26,561 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,562 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:26,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:26,563 INFO L87 Difference]: Start difference. First operand 795 states and 959 transitions. Second operand 8 states. [2019-09-20 13:30:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,600 INFO L93 Difference]: Finished difference Result 823 states and 987 transitions. [2019-09-20 13:30:26,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:26,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-20 13:30:26,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,605 INFO L225 Difference]: With dead ends: 823 [2019-09-20 13:30:26,606 INFO L226 Difference]: Without dead ends: 823 [2019-09-20 13:30:26,606 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 13:30:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2019-09-20 13:30:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 811. [2019-09-20 13:30:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-09-20 13:30:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-09-20 13:30:26,639 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 103 [2019-09-20 13:30:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,640 INFO L475 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-09-20 13:30:26,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-09-20 13:30:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:30:26,643 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,643 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] [2019-09-20 13:30:26,644 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 618403889, now seen corresponding path program 1 times [2019-09-20 13:30:26,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,646 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,757 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 13:30:26,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:26,760 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:26,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:26,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:26,762 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 4 states. [2019-09-20 13:30:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,038 INFO L93 Difference]: Finished difference Result 1774 states and 2223 transitions. [2019-09-20 13:30:27,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:27,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-20 13:30:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,048 INFO L225 Difference]: With dead ends: 1774 [2019-09-20 13:30:27,048 INFO L226 Difference]: Without dead ends: 1774 [2019-09-20 13:30:27,049 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 13:30:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2019-09-20 13:30:27,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1743. [2019-09-20 13:30:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1743 states. [2019-09-20 13:30:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2151 transitions. [2019-09-20 13:30:27,133 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2151 transitions. Word has length 103 [2019-09-20 13:30:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,133 INFO L475 AbstractCegarLoop]: Abstraction has 1743 states and 2151 transitions. [2019-09-20 13:30:27,133 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2151 transitions. [2019-09-20 13:30:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:30:27,138 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,139 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] [2019-09-20 13:30:27,139 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1230367511, now seen corresponding path program 1 times [2019-09-20 13:30:27,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,143 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:27,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:27,291 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:27,293 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 108 with the following transitions: [2019-09-20 13:30:27,295 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [201], [203], [206], [208], [211], [214], [235], [236], [237], [239], [244], [247], [248], [250], [255], [257], [258], [261], [262], [268], [272], [312], [315], [317], [320], [330], [333], [337], [338], [341], [342], [343], [367], [369], [370], [437], [438], [443], [445], [448], [456], [457], [458], [459], [460], [461], [462], [463], [464], [506], [507], [508], [509], [510], [511], [514], [518], [519], [520], [521], [522], [524], [525], [526], [527], [528], [529], [532], [533], [534], [540], [541], [542], [543], [550], [551], [552], [554], [555], [560], [561], [562] [2019-09-20 13:30:27,356 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:27,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:27,464 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:27,467 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. [2019-09-20 13:30:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,472 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:27,524 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:27,525 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:27,528 INFO L420 sIntCurrentIteration]: We unified 106 AI predicates to 106 [2019-09-20 13:30:27,529 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:27,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:27,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:30:27,530 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:27,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:27,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:27,531 INFO L87 Difference]: Start difference. First operand 1743 states and 2151 transitions. Second operand 2 states. [2019-09-20 13:30:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,532 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:27,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:27,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 107 [2019-09-20 13:30:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,532 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:27,532 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:27,533 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 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 13:30:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:27,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2019-09-20 13:30:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,534 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:27,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:27,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:27,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:27 BoogieIcfgContainer [2019-09-20 13:30:27,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:27,545 INFO L168 Benchmark]: Toolchain (without parser) took 6654.11 ms. Allocated memory was 137.9 MB in the beginning and 341.3 MB in the end (delta: 203.4 MB). Free memory was 84.6 MB in the beginning and 223.8 MB in the end (delta: -139.2 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:27,546 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:27,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.62 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 84.4 MB in the beginning and 163.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:27,549 INFO L168 Benchmark]: Boogie Preprocessor took 102.79 ms. Allocated memory is still 198.2 MB. Free memory was 163.2 MB in the beginning and 158.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:27,551 INFO L168 Benchmark]: RCFGBuilder took 1220.12 ms. Allocated memory was 198.2 MB in the beginning and 218.6 MB in the end (delta: 20.4 MB). Free memory was 158.7 MB in the beginning and 187.5 MB in the end (delta: -28.7 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:27,554 INFO L168 Benchmark]: TraceAbstraction took 4631.23 ms. Allocated memory was 218.6 MB in the beginning and 341.3 MB in the end (delta: 122.7 MB). Free memory was 187.5 MB in the beginning and 223.8 MB in the end (delta: -36.3 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:27,560 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.62 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 84.4 MB in the beginning and 163.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.79 ms. Allocated memory is still 198.2 MB. Free memory was 163.2 MB in the beginning and 158.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1220.12 ms. Allocated memory was 198.2 MB in the beginning and 218.6 MB in the end (delta: 20.4 MB). Free memory was 158.7 MB in the beginning and 187.5 MB in the end (delta: -28.7 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4631.23 ms. Allocated memory was 218.6 MB in the beginning and 341.3 MB in the end (delta: 122.7 MB). Free memory was 187.5 MB in the beginning and 223.8 MB in the end (delta: -36.3 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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 43 procedures, 253 locations, 1 error locations. SAFE Result, 4.5s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1501 SDtfs, 817 SDslu, 3607 SDs, 0 SdLazy, 970 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1743occurred 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, 1.0377358490566038 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 161 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 694 ConstructedInterpolants, 0 QuantifiedInterpolants, 90774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...