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_spec1_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:43,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:43,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:43,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:43,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:43,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:43,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:43,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:43,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:43,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:43,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:43,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:43,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:43,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:43,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:43,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:43,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:43,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:43,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:43,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:43,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:43,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:43,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:43,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:43,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:43,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:43,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:43,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:43,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:43,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:43,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:43,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:43,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:43,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:43,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:43,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:43,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:43,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:43,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:43,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:43,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:43,917 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 13:29:43,947 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:43,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:43,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:43,948 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:43,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:43,949 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:43,949 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:43,949 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:43,949 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:43,950 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:43,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:43,952 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:43,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:43,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:43,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:43,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:43,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:43,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:43,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:43,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:43,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:43,955 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:43,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:43,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:43,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:43,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:43,956 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:43,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:43,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:43,956 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:44,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:44,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:44,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:44,038 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:44,039 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:44,040 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-09-20 13:29:44,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea45c6005/a46be50fcd4841de81a820f946b1ea9f/FLAGd81bae05e [2019-09-20 13:29:44,726 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:44,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-09-20 13:29:44,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea45c6005/a46be50fcd4841de81a820f946b1ea9f/FLAGd81bae05e [2019-09-20 13:29:44,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea45c6005/a46be50fcd4841de81a820f946b1ea9f [2019-09-20 13:29:44,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:44,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:44,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:44,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:45,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:45,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:44" (1/1) ... [2019-09-20 13:29:45,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418d389a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45, skipping insertion in model container [2019-09-20 13:29:45,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:44" (1/1) ... [2019-09-20 13:29:45,014 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:45,089 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:45,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:45,562 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:45,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:45,709 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:45,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45 WrapperNode [2019-09-20 13:29:45,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:45,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:45,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:45,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:45,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (1/1) ... [2019-09-20 13:29:45,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:45,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:45,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:45,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:45,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (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 13:29:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:29:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:29:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:29:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:29:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:29:45,944 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:29:45,944 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:29:45,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:29:45,945 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:29:45,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:29:45,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:29:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:29:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-20 13:29:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:29:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:29:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:29:45,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:29:45,950 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:29:45,951 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:29:45,951 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:29:45,952 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:29:45,952 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:29:45,952 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:29:45,952 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:29:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:29:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:29:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:29:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:29:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:29:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:29:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:29:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:29:45,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:29:45,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:29:45,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:29:45,955 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:29:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:29:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:29:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:29:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:29:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:29:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:29:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:29:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:29:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:29:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:29:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:29:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:29:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:29:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:29:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:29:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:29:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:29:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-20 13:29:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:29:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:29:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:29:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:29:45,965 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:29:45,965 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:29:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:29:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:29:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:29:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:29:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:29:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:29:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:29:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:29:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:29:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:29:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:29:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:47,206 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:47,206 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:29:47,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:47 BoogieIcfgContainer [2019-09-20 13:29:47,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:47,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:47,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:47,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:47,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:44" (1/3) ... [2019-09-20 13:29:47,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d95371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:47, skipping insertion in model container [2019-09-20 13:29:47,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:45" (2/3) ... [2019-09-20 13:29:47,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d95371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:47, skipping insertion in model container [2019-09-20 13:29:47,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:47" (3/3) ... [2019-09-20 13:29:47,217 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2019-09-20 13:29:47,227 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:47,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:47,253 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:47,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:47,281 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:47,281 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:47,281 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:47,281 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:47,282 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:47,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:47,282 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-09-20 13:29:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:29:47,321 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:47,322 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] [2019-09-20 13:29:47,324 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -868868404, now seen corresponding path program 1 times [2019-09-20 13:29:47,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:47,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:47,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:47,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:47,390 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:47,707 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 13:29:47,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:47,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:47,715 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:47,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:47,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:47,750 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 2 states. [2019-09-20 13:29:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:47,801 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2019-09-20 13:29:47,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:47,803 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:29:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:47,821 INFO L225 Difference]: With dead ends: 161 [2019-09-20 13:29:47,821 INFO L226 Difference]: Without dead ends: 150 [2019-09-20 13:29:47,825 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 13:29:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-20 13:29:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-20 13:29:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-20 13:29:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-09-20 13:29:47,878 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 46 [2019-09-20 13:29:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:47,878 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-09-20 13:29:47,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-09-20 13:29:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:29:47,882 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:47,882 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] [2019-09-20 13:29:47,882 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:47,883 INFO L82 PathProgramCache]: Analyzing trace with hash -276167130, now seen corresponding path program 1 times [2019-09-20 13:29:47,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:47,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:47,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:47,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:47,887 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:48,063 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 13:29:48,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:48,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:48,064 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:48,066 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:48,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:48,071 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 3 states. [2019-09-20 13:29:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:48,088 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2019-09-20 13:29:48,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:48,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-20 13:29:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:48,091 INFO L225 Difference]: With dead ends: 141 [2019-09-20 13:29:48,092 INFO L226 Difference]: Without dead ends: 141 [2019-09-20 13:29:48,093 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 13:29:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-20 13:29:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-09-20 13:29:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-20 13:29:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2019-09-20 13:29:48,107 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 47 [2019-09-20 13:29:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:48,107 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2019-09-20 13:29:48,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2019-09-20 13:29:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:29:48,117 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:48,117 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 13:29:48,117 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:48,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:48,118 INFO L82 PathProgramCache]: Analyzing trace with hash 106155889, now seen corresponding path program 1 times [2019-09-20 13:29:48,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:48,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:48,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,121 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:48,341 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 13:29:48,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:48,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:29:48,342 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:48,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:29:48,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:29:48,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:48,344 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand 7 states. [2019-09-20 13:29:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:49,063 INFO L93 Difference]: Finished difference Result 308 states and 368 transitions. [2019-09-20 13:29:49,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:49,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2019-09-20 13:29:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:49,068 INFO L225 Difference]: With dead ends: 308 [2019-09-20 13:29:49,068 INFO L226 Difference]: Without dead ends: 308 [2019-09-20 13:29:49,069 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 13:29:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-09-20 13:29:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 296. [2019-09-20 13:29:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-09-20 13:29:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 356 transitions. [2019-09-20 13:29:49,104 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 356 transitions. Word has length 52 [2019-09-20 13:29:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:49,105 INFO L475 AbstractCegarLoop]: Abstraction has 296 states and 356 transitions. [2019-09-20 13:29:49,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:29:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 356 transitions. [2019-09-20 13:29:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:29:49,107 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:49,107 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] [2019-09-20 13:29:49,108 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:49,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:49,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1448124188, now seen corresponding path program 1 times [2019-09-20 13:29:49,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:49,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:49,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:49,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:49,112 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:49,209 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 13:29:49,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:49,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:49,210 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:49,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:49,211 INFO L87 Difference]: Start difference. First operand 296 states and 356 transitions. Second operand 6 states. [2019-09-20 13:29:49,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:49,457 INFO L93 Difference]: Finished difference Result 553 states and 668 transitions. [2019-09-20 13:29:49,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:49,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-20 13:29:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:49,463 INFO L225 Difference]: With dead ends: 553 [2019-09-20 13:29:49,463 INFO L226 Difference]: Without dead ends: 553 [2019-09-20 13:29:49,464 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 13:29:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-09-20 13:29:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2019-09-20 13:29:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-09-20 13:29:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2019-09-20 13:29:49,532 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 57 [2019-09-20 13:29:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:49,534 INFO L475 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2019-09-20 13:29:49,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2019-09-20 13:29:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-20 13:29:49,547 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:49,547 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] [2019-09-20 13:29:49,548 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:49,549 INFO L82 PathProgramCache]: Analyzing trace with hash -432580704, now seen corresponding path program 1 times [2019-09-20 13:29:49,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:49,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:49,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:49,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:49,553 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:49,707 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 13:29:49,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:49,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:29:49,708 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:49,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:29:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:29:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:49,709 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 7 states. [2019-09-20 13:29:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:50,419 INFO L93 Difference]: Finished difference Result 883 states and 1114 transitions. [2019-09-20 13:29:50,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:29:50,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-09-20 13:29:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:50,426 INFO L225 Difference]: With dead ends: 883 [2019-09-20 13:29:50,426 INFO L226 Difference]: Without dead ends: 883 [2019-09-20 13:29:50,426 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 13:29:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-09-20 13:29:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 785. [2019-09-20 13:29:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-09-20 13:29:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 947 transitions. [2019-09-20 13:29:50,470 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 947 transitions. Word has length 61 [2019-09-20 13:29:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:50,471 INFO L475 AbstractCegarLoop]: Abstraction has 785 states and 947 transitions. [2019-09-20 13:29:50,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:29:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 947 transitions. [2019-09-20 13:29:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-20 13:29:50,474 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:50,474 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] [2019-09-20 13:29:50,475 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2030363971, now seen corresponding path program 1 times [2019-09-20 13:29:50,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:50,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:50,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:50,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:50,478 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:50,590 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 13:29:50,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:50,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:50,590 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:50,591 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:50,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:50,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:50,592 INFO L87 Difference]: Start difference. First operand 785 states and 947 transitions. Second operand 6 states. [2019-09-20 13:29:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:50,625 INFO L93 Difference]: Finished difference Result 813 states and 979 transitions. [2019-09-20 13:29:50,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:29:50,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-09-20 13:29:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:50,631 INFO L225 Difference]: With dead ends: 813 [2019-09-20 13:29:50,631 INFO L226 Difference]: Without dead ends: 813 [2019-09-20 13:29:50,632 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 13:29:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-09-20 13:29:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 805. [2019-09-20 13:29:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-09-20 13:29:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 967 transitions. [2019-09-20 13:29:50,661 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 967 transitions. Word has length 99 [2019-09-20 13:29:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:50,662 INFO L475 AbstractCegarLoop]: Abstraction has 805 states and 967 transitions. [2019-09-20 13:29:50,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 967 transitions. [2019-09-20 13:29:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-20 13:29:50,665 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:50,665 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] [2019-09-20 13:29:50,665 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1136877633, now seen corresponding path program 1 times [2019-09-20 13:29:50,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:50,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:50,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:50,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:50,669 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:50,750 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 13:29:50,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:50,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:29:50,751 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:50,751 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:29:50,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:29:50,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:50,752 INFO L87 Difference]: Start difference. First operand 805 states and 967 transitions. Second operand 8 states. [2019-09-20 13:29:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:50,786 INFO L93 Difference]: Finished difference Result 833 states and 995 transitions. [2019-09-20 13:29:50,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:50,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2019-09-20 13:29:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:50,791 INFO L225 Difference]: With dead ends: 833 [2019-09-20 13:29:50,791 INFO L226 Difference]: Without dead ends: 833 [2019-09-20 13:29:50,792 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 13:29:50,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2019-09-20 13:29:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 821. [2019-09-20 13:29:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-09-20 13:29:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 983 transitions. [2019-09-20 13:29:50,822 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 983 transitions. Word has length 99 [2019-09-20 13:29:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:50,822 INFO L475 AbstractCegarLoop]: Abstraction has 821 states and 983 transitions. [2019-09-20 13:29:50,823 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:29:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 983 transitions. [2019-09-20 13:29:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-20 13:29:50,825 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:50,825 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] [2019-09-20 13:29:50,826 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1144636992, now seen corresponding path program 1 times [2019-09-20 13:29:50,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:50,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:50,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:50,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:50,829 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:50,900 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 13:29:50,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:50,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:50,901 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:50,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:50,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:50,902 INFO L87 Difference]: Start difference. First operand 821 states and 983 transitions. Second operand 4 states. [2019-09-20 13:29:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:51,157 INFO L93 Difference]: Finished difference Result 1806 states and 2251 transitions. [2019-09-20 13:29:51,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:51,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-09-20 13:29:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:51,168 INFO L225 Difference]: With dead ends: 1806 [2019-09-20 13:29:51,169 INFO L226 Difference]: Without dead ends: 1806 [2019-09-20 13:29:51,169 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 13:29:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2019-09-20 13:29:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1775. [2019-09-20 13:29:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2019-09-20 13:29:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2179 transitions. [2019-09-20 13:29:51,253 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2179 transitions. Word has length 99 [2019-09-20 13:29:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:51,253 INFO L475 AbstractCegarLoop]: Abstraction has 1775 states and 2179 transitions. [2019-09-20 13:29:51,254 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2179 transitions. [2019-09-20 13:29:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:29:51,260 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:51,260 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 13:29:51,261 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878310, now seen corresponding path program 1 times [2019-09-20 13:29:51,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:51,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:51,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:51,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:51,265 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:51,436 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 13:29:51,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:51,436 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:51,437 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2019-09-20 13:29:51,440 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [184], [190], [198], [199], [211], [213], [218], [221], [224], [226], [231], [233], [234], [240], [244], [277], [278], [288], [291], [293], [296], [306], [309], [313], [314], [317], [318], [319], [342], [344], [345], [412], [413], [418], [420], [423], [427], [429], [432], [434], [437], [450], [451], [452], [453], [454], [455], [456], [457], [458], [500], [501], [502], [503], [504], [505], [510], [514], [515], [516], [517], [518], [519], [522], [523], [524], [530], [531], [532], [533], [540], [542], [543], [548], [549], [550], [552], [553], [554], [555], [556] [2019-09-20 13:29:51,486 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:51,487 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:51,563 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:51,565 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 126 variables. [2019-09-20 13:29:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:51,570 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:51,618 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:29:51,619 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:51,623 INFO L420 sIntCurrentIteration]: We unified 102 AI predicates to 102 [2019-09-20 13:29:51,623 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:51,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:51,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:29:51,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:51,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:51,626 INFO L87 Difference]: Start difference. First operand 1775 states and 2179 transitions. Second operand 2 states. [2019-09-20 13:29:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:51,626 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:29:51,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:51,626 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 103 [2019-09-20 13:29:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:51,627 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:29:51,627 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:51,627 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 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 13:29:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:51,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2019-09-20 13:29:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:51,629 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:51,629 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:51,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:51,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:51 BoogieIcfgContainer [2019-09-20 13:29:51,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:51,637 INFO L168 Benchmark]: Toolchain (without parser) took 6640.02 ms. Allocated memory was 138.4 MB in the beginning and 336.1 MB in the end (delta: 197.7 MB). Free memory was 84.9 MB in the beginning and 210.9 MB in the end (delta: -126.0 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:51,638 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:51,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.63 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 84.5 MB in the beginning and 162.9 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:51,639 INFO L168 Benchmark]: Boogie Preprocessor took 113.06 ms. Allocated memory is still 198.2 MB. Free memory was 162.9 MB in the beginning and 158.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:51,640 INFO L168 Benchmark]: RCFGBuilder took 1380.96 ms. Allocated memory was 198.2 MB in the beginning and 219.7 MB in the end (delta: 21.5 MB). Free memory was 158.4 MB in the beginning and 186.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 92.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:51,641 INFO L168 Benchmark]: TraceAbstraction took 4425.14 ms. Allocated memory was 219.7 MB in the beginning and 336.1 MB in the end (delta: 116.4 MB). Free memory was 186.5 MB in the beginning and 210.9 MB in the end (delta: -24.4 MB). Peak memory consumption was 92.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:51,645 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.63 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 84.5 MB in the beginning and 162.9 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.06 ms. Allocated memory is still 198.2 MB. Free memory was 162.9 MB in the beginning and 158.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1380.96 ms. Allocated memory was 198.2 MB in the beginning and 219.7 MB in the end (delta: 21.5 MB). Free memory was 158.4 MB in the beginning and 186.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 92.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4425.14 ms. Allocated memory was 219.7 MB in the beginning and 336.1 MB in the end (delta: 116.4 MB). Free memory was 186.5 MB in the beginning and 210.9 MB in the end (delta: -24.4 MB). Peak memory consumption was 92.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 651]: 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, 252 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1492 SDtfs, 900 SDslu, 3506 SDs, 0 SdLazy, 979 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1775occurred 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, 1.0686274509803921 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 167 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 83242 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...