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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:01,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:01,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:01,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:01,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:01,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:01,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:01,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:01,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:01,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:01,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:01,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:01,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:01,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:01,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:01,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:01,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:01,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:01,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:01,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:01,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:01,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:01,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:01,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:01,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:01,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:01,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:01,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:01,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:01,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:01,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:01,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:01,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:01,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:01,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:01,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:01,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:01,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:01,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:01,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:01,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:01,936 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 [2019-09-16 17:08:01,951 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:01,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:01,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:01,952 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:01,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:01,953 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:01,953 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:01,953 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:01,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:01,953 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:01,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:01,954 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:01,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:01,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:01,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:01,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:01,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:01,955 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:01,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:01,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:01,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:01,956 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:01,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:01,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:01,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:01,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:01,957 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:01,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:01,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:01,958 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:01,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:01,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:02,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:02,005 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:02,005 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:02,007 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product64.cil.c [2019-09-16 17:08:02,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356f49df7/c80bb2987bfc4be080dea22afdf4737b/FLAG78b12723f [2019-09-16 17:08:02,688 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:02,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product64.cil.c [2019-09-16 17:08:02,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356f49df7/c80bb2987bfc4be080dea22afdf4737b/FLAG78b12723f [2019-09-16 17:08:02,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356f49df7/c80bb2987bfc4be080dea22afdf4737b [2019-09-16 17:08:02,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:02,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:02,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:02,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:02,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:02,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:02" (1/1) ... [2019-09-16 17:08:02,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d01eef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:02, skipping insertion in model container [2019-09-16 17:08:02,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:02" (1/1) ... [2019-09-16 17:08:02,951 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:03,006 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:03,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:03,488 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:03,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:03,687 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:03,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03 WrapperNode [2019-09-16 17:08:03,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:03,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:03,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:03,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:03,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:03,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:03,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:03,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:03,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (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 [2019-09-16 17:08:03,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-16 17:08:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:08:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:08:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:08:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:08:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:08:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:08:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:08:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:08:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:08:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:08:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:04,933 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:04,934 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:04,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:04 BoogieIcfgContainer [2019-09-16 17:08:04,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:04,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:04,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:04,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:04,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:02" (1/3) ... [2019-09-16 17:08:04,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486af152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:04, skipping insertion in model container [2019-09-16 17:08:04,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (2/3) ... [2019-09-16 17:08:04,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486af152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:04, skipping insertion in model container [2019-09-16 17:08:04,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:04" (3/3) ... [2019-09-16 17:08:04,944 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product64.cil.c [2019-09-16 17:08:04,954 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:04,964 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:04,981 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:05,010 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:05,010 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:05,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:05,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:05,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:05,011 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:05,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:05,011 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-09-16 17:08:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-16 17:08:05,051 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:05,052 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] [2019-09-16 17:08:05,054 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1495966497, now seen corresponding path program 1 times [2019-09-16 17:08:05,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:05,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:05,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,124 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:05,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:05,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:05,441 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:05,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:05,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:05,473 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 2 states. [2019-09-16 17:08:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:05,504 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2019-09-16 17:08:05,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:05,505 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-16 17:08:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:05,520 INFO L225 Difference]: With dead ends: 171 [2019-09-16 17:08:05,520 INFO L226 Difference]: Without dead ends: 160 [2019-09-16 17:08:05,522 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 [2019-09-16 17:08:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-16 17:08:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-09-16 17:08:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-09-16 17:08:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 191 transitions. [2019-09-16 17:08:05,581 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 191 transitions. Word has length 46 [2019-09-16 17:08:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:05,581 INFO L475 AbstractCegarLoop]: Abstraction has 160 states and 191 transitions. [2019-09-16 17:08:05,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 191 transitions. [2019-09-16 17:08:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-16 17:08:05,585 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:05,586 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] [2019-09-16 17:08:05,586 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:05,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1681348133, now seen corresponding path program 1 times [2019-09-16 17:08:05,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:05,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:05,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,590 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:05,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:05,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:05,758 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:05,760 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:05,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:05,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:05,761 INFO L87 Difference]: Start difference. First operand 160 states and 191 transitions. Second operand 3 states. [2019-09-16 17:08:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:05,782 INFO L93 Difference]: Finished difference Result 151 states and 179 transitions. [2019-09-16 17:08:05,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:05,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-16 17:08:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:05,789 INFO L225 Difference]: With dead ends: 151 [2019-09-16 17:08:05,789 INFO L226 Difference]: Without dead ends: 151 [2019-09-16 17:08:05,790 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 [2019-09-16 17:08:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-16 17:08:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-16 17:08:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-16 17:08:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2019-09-16 17:08:05,818 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 47 [2019-09-16 17:08:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:05,820 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2019-09-16 17:08:05,820 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2019-09-16 17:08:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-16 17:08:05,822 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:05,823 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] [2019-09-16 17:08:05,824 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 833077427, now seen corresponding path program 1 times [2019-09-16 17:08:05,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:05,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:06,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:06,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:06,057 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:06,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:06,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:06,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:06,058 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand 7 states. [2019-09-16 17:08:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:06,748 INFO L93 Difference]: Finished difference Result 328 states and 398 transitions. [2019-09-16 17:08:06,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:06,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2019-09-16 17:08:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:06,753 INFO L225 Difference]: With dead ends: 328 [2019-09-16 17:08:06,753 INFO L226 Difference]: Without dead ends: 328 [2019-09-16 17:08:06,754 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 [2019-09-16 17:08:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-09-16 17:08:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 316. [2019-09-16 17:08:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-09-16 17:08:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 386 transitions. [2019-09-16 17:08:06,791 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 386 transitions. Word has length 52 [2019-09-16 17:08:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:06,791 INFO L475 AbstractCegarLoop]: Abstraction has 316 states and 386 transitions. [2019-09-16 17:08:06,791 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 386 transitions. [2019-09-16 17:08:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-16 17:08:06,795 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:06,795 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] [2019-09-16 17:08:06,795 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:06,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1106348516, now seen corresponding path program 1 times [2019-09-16 17:08:06,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:06,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:06,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:06,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:06,799 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:06,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:06,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:06,941 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:06,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:06,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:06,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:06,943 INFO L87 Difference]: Start difference. First operand 316 states and 386 transitions. Second operand 6 states. [2019-09-16 17:08:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:07,198 INFO L93 Difference]: Finished difference Result 593 states and 728 transitions. [2019-09-16 17:08:07,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:07,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-16 17:08:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:07,204 INFO L225 Difference]: With dead ends: 593 [2019-09-16 17:08:07,204 INFO L226 Difference]: Without dead ends: 593 [2019-09-16 17:08:07,205 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 [2019-09-16 17:08:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-09-16 17:08:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 587. [2019-09-16 17:08:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2019-09-16 17:08:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 722 transitions. [2019-09-16 17:08:07,275 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 722 transitions. Word has length 57 [2019-09-16 17:08:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:07,279 INFO L475 AbstractCegarLoop]: Abstraction has 587 states and 722 transitions. [2019-09-16 17:08:07,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 722 transitions. [2019-09-16 17:08:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-16 17:08:07,285 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:07,286 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] [2019-09-16 17:08:07,286 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:07,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1073775336, now seen corresponding path program 1 times [2019-09-16 17:08:07,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:07,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:07,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,290 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:07,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:07,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:07,430 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:07,432 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:07,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:07,434 INFO L87 Difference]: Start difference. First operand 587 states and 722 transitions. Second operand 7 states. [2019-09-16 17:08:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:08,246 INFO L93 Difference]: Finished difference Result 975 states and 1230 transitions. [2019-09-16 17:08:08,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:08:08,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-09-16 17:08:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:08,254 INFO L225 Difference]: With dead ends: 975 [2019-09-16 17:08:08,255 INFO L226 Difference]: Without dead ends: 975 [2019-09-16 17:08:08,255 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 [2019-09-16 17:08:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-09-16 17:08:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 877. [2019-09-16 17:08:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-09-16 17:08:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1063 transitions. [2019-09-16 17:08:08,301 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1063 transitions. Word has length 61 [2019-09-16 17:08:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:08,301 INFO L475 AbstractCegarLoop]: Abstraction has 877 states and 1063 transitions. [2019-09-16 17:08:08,301 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1063 transitions. [2019-09-16 17:08:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-16 17:08:08,304 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:08,304 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] [2019-09-16 17:08:08,305 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2112269386, now seen corresponding path program 1 times [2019-09-16 17:08:08,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:08,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:08,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,308 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:08,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:08,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:08,385 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:08,385 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:08,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:08,386 INFO L87 Difference]: Start difference. First operand 877 states and 1063 transitions. Second operand 6 states. [2019-09-16 17:08:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:08,431 INFO L93 Difference]: Finished difference Result 905 states and 1095 transitions. [2019-09-16 17:08:08,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:08,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-09-16 17:08:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:08,436 INFO L225 Difference]: With dead ends: 905 [2019-09-16 17:08:08,436 INFO L226 Difference]: Without dead ends: 905 [2019-09-16 17:08:08,437 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 [2019-09-16 17:08:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2019-09-16 17:08:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 897. [2019-09-16 17:08:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-09-16 17:08:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1083 transitions. [2019-09-16 17:08:08,472 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1083 transitions. Word has length 104 [2019-09-16 17:08:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:08,472 INFO L475 AbstractCegarLoop]: Abstraction has 897 states and 1083 transitions. [2019-09-16 17:08:08,473 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1083 transitions. [2019-09-16 17:08:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-16 17:08:08,475 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:08,475 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] [2019-09-16 17:08:08,476 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:08,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1759181004, now seen corresponding path program 1 times [2019-09-16 17:08:08,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:08,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:08,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,478 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:08,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:08,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:08:08,560 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:08,561 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:08:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:08:08,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:08,561 INFO L87 Difference]: Start difference. First operand 897 states and 1083 transitions. Second operand 8 states. [2019-09-16 17:08:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:08,605 INFO L93 Difference]: Finished difference Result 925 states and 1111 transitions. [2019-09-16 17:08:08,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:08,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-09-16 17:08:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:08,611 INFO L225 Difference]: With dead ends: 925 [2019-09-16 17:08:08,611 INFO L226 Difference]: Without dead ends: 925 [2019-09-16 17:08:08,612 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 [2019-09-16 17:08:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2019-09-16 17:08:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 913. [2019-09-16 17:08:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-09-16 17:08:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1099 transitions. [2019-09-16 17:08:08,646 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1099 transitions. Word has length 104 [2019-09-16 17:08:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:08,646 INFO L475 AbstractCegarLoop]: Abstraction has 913 states and 1099 transitions. [2019-09-16 17:08:08,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:08:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1099 transitions. [2019-09-16 17:08:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-16 17:08:08,648 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:08,649 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] [2019-09-16 17:08:08,649 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:08,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1402595699, now seen corresponding path program 1 times [2019-09-16 17:08:08,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:08,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:08,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,652 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:08,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:08,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:08:08,723 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:08,724 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:08:08,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:08:08,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:08,724 INFO L87 Difference]: Start difference. First operand 913 states and 1099 transitions. Second operand 4 states. [2019-09-16 17:08:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:09,002 INFO L93 Difference]: Finished difference Result 2002 states and 2507 transitions. [2019-09-16 17:08:09,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:08:09,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-09-16 17:08:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:09,014 INFO L225 Difference]: With dead ends: 2002 [2019-09-16 17:08:09,014 INFO L226 Difference]: Without dead ends: 2002 [2019-09-16 17:08:09,015 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 [2019-09-16 17:08:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2019-09-16 17:08:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1971. [2019-09-16 17:08:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2019-09-16 17:08:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2435 transitions. [2019-09-16 17:08:09,100 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2435 transitions. Word has length 104 [2019-09-16 17:08:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:09,100 INFO L475 AbstractCegarLoop]: Abstraction has 1971 states and 2435 transitions. [2019-09-16 17:08:09,101 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:08:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2435 transitions. [2019-09-16 17:08:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:08:09,105 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:09,106 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:09,106 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:09,107 INFO L82 PathProgramCache]: Analyzing trace with hash -859026489, now seen corresponding path program 1 times [2019-09-16 17:08:09,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:09,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:09,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:09,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:09,110 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:08:09,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:09,252 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:09,253 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 109 with the following transitions: [2019-09-16 17:08:09,256 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], [222], [224], [229], [231], [232], [235], [236], [242], [246], [288], [291], [293], [296], [306], [309], [313], [314], [317], [318], [333], [336], [337], [338], [361], [363], [364], [431], [432], [439], [441], [442], [446], [448], [451], [453], [456], [469], [470], [471], [472], [473], [474], [475], [476], [477], [519], [520], [521], [522], [523], [524], [529], [533], [534], [535], [536], [537], [538], [541], [542], [543], [549], [550], [551], [552], [563], [564], [567], [569], [570], [575], [576], [577], [579], [580], [581], [582], [583] [2019-09-16 17:08:09,302 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:09,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:09,381 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:09,383 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-16 17:08:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:09,388 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:09,435 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:09,435 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:09,438 INFO L420 sIntCurrentIteration]: We unified 107 AI predicates to 107 [2019-09-16 17:08:09,439 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:09,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:09,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-16 17:08:09,440 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:09,440 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:09,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:09,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:09,441 INFO L87 Difference]: Start difference. First operand 1971 states and 2435 transitions. Second operand 2 states. [2019-09-16 17:08:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:09,442 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:09,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:09,442 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 108 [2019-09-16 17:08:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:09,442 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:09,442 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:09,443 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:09,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:09,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-09-16 17:08:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:09,444 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:09,444 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:09,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:09,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:09 BoogieIcfgContainer [2019-09-16 17:08:09,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:09,453 INFO L168 Benchmark]: Toolchain (without parser) took 6519.78 ms. Allocated memory was 130.5 MB in the beginning and 343.4 MB in the end (delta: 212.9 MB). Free memory was 83.6 MB in the beginning and 200.7 MB in the end (delta: -117.0 MB). Peak memory consumption was 95.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:09,453 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 130.5 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:09,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.17 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 83.4 MB in the beginning and 161.3 MB in the end (delta: -77.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:09,455 INFO L168 Benchmark]: Boogie Preprocessor took 103.30 ms. Allocated memory is still 198.7 MB. Free memory was 161.3 MB in the beginning and 156.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:09,456 INFO L168 Benchmark]: RCFGBuilder took 1143.34 ms. Allocated memory was 198.7 MB in the beginning and 218.1 MB in the end (delta: 19.4 MB). Free memory was 156.7 MB in the beginning and 184.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 92.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:09,457 INFO L168 Benchmark]: TraceAbstraction took 4513.41 ms. Allocated memory was 218.1 MB in the beginning and 343.4 MB in the end (delta: 125.3 MB). Free memory was 184.3 MB in the beginning and 200.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:09,461 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 130.5 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.17 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 83.4 MB in the beginning and 161.3 MB in the end (delta: -77.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.30 ms. Allocated memory is still 198.7 MB. Free memory was 161.3 MB in the beginning and 156.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1143.34 ms. Allocated memory was 198.7 MB in the beginning and 218.1 MB in the end (delta: 19.4 MB). Free memory was 156.7 MB in the beginning and 184.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 92.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4513.41 ms. Allocated memory was 218.1 MB in the beginning and 343.4 MB in the end (delta: 125.3 MB). Free memory was 184.3 MB in the beginning and 200.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 108.9 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 44 procedures, 262 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1633 SDtfs, 990 SDslu, 3844 SDs, 0 SdLazy, 1075 SolverSat, 210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1971occurred 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, 1.02803738317757 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, 683 NumberOfCodeBlocks, 683 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 674 ConstructedInterpolants, 0 QuantifiedInterpolants, 89263 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...