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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:57:02,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:57:02,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:57:02,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:57:02,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:57:02,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:57:02,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:57:02,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:57:02,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:57:02,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:57:02,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:57:02,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:57:02,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:57:02,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:57:02,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:57:02,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:57:02,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:57:02,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:57:02,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:57:02,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:57:02,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:57:02,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:57:02,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:57:02,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:57:02,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:57:02,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:57:02,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:57:02,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:57:02,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:57:02,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:57:02,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:57:02,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:57:02,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:57:02,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:57:02,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:57:02,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:57:02,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:57:02,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:57:02,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:57:02,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:57:02,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:57:02,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:57:02,945 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:57:02,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:57:02,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:57:02,946 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:57:02,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:57:02,947 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:57:02,947 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:57:02,947 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:57:02,947 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:57:02,947 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:57:02,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:57:02,948 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:57:02,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:57:02,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:57:02,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:57:02,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:57:02,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:57:02,949 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:57:02,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:57:02,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:57:02,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:57:02,950 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:57:02,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:57:02,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:57:02,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:57:02,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:57:02,951 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:57:02,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:57:02,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:57:02,952 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:57:02,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:57:02,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:57:03,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:57:03,003 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:57:03,004 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:57:03,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-03 02:57:03,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9878b09ca/30036ab244bb4aa7b8baf34f0a5255af/FLAG492429188 [2019-10-03 02:57:03,637 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:57:03,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-03 02:57:03,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9878b09ca/30036ab244bb4aa7b8baf34f0a5255af/FLAG492429188 [2019-10-03 02:57:03,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9878b09ca/30036ab244bb4aa7b8baf34f0a5255af [2019-10-03 02:57:03,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:57:03,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:57:03,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:57:03,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:57:03,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:57:03,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:57:03" (1/1) ... [2019-10-03 02:57:03,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee255a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:03, skipping insertion in model container [2019-10-03 02:57:03,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:57:03" (1/1) ... [2019-10-03 02:57:03,945 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:57:03,996 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:57:04,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:57:04,547 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:57:04,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:57:04,665 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:57:04,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04 WrapperNode [2019-10-03 02:57:04,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:57:04,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:57:04,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:57:04,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:57:04,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... [2019-10-03 02:57:04,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:57:04,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:57:04,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:57:04,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:57:04,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:57:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:57:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:57:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-03 02:57:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-03 02:57:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-03 02:57:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-03 02:57:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-03 02:57:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-03 02:57:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-03 02:57:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-03 02:57:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-03 02:57:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-03 02:57:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-03 02:57:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-03 02:57:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-03 02:57:04,836 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-03 02:57:04,836 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:57:04,836 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-03 02:57:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-03 02:57:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-03 02:57:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-03 02:57:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-03 02:57:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-03 02:57:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-03 02:57:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-03 02:57:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-03 02:57:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-03 02:57:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-03 02:57:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-03 02:57:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-03 02:57:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-03 02:57:04,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-03 02:57:04,841 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-03 02:57:04,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-03 02:57:04,842 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-03 02:57:04,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:57:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:57:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:57:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-03 02:57:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-03 02:57:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-03 02:57:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-03 02:57:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-03 02:57:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-03 02:57:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-03 02:57:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-03 02:57:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-03 02:57:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-03 02:57:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-03 02:57:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-03 02:57:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-03 02:57:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-03 02:57:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-03 02:57:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-03 02:57:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-03 02:57:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:57:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-03 02:57:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-03 02:57:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-03 02:57:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-03 02:57:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:57:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:57:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-03 02:57:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:57:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:57:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:57:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-03 02:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-03 02:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-03 02:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-03 02:57:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-03 02:57:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-03 02:57:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-03 02:57:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-03 02:57:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-03 02:57:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-03 02:57:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-03 02:57:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-03 02:57:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-03 02:57:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:57:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:57:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:57:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:57:06,055 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:57:06,055 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-03 02:57:06,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:57:06 BoogieIcfgContainer [2019-10-03 02:57:06,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:57:06,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:57:06,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:57:06,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:57:06,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:57:03" (1/3) ... [2019-10-03 02:57:06,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85f6ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:57:06, skipping insertion in model container [2019-10-03 02:57:06,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:04" (2/3) ... [2019-10-03 02:57:06,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85f6ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:57:06, skipping insertion in model container [2019-10-03 02:57:06,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:57:06" (3/3) ... [2019-10-03 02:57:06,066 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2019-10-03 02:57:06,076 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:57:06,087 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:57:06,105 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:57:06,133 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:57:06,134 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:57:06,134 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:57:06,134 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:57:06,135 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:57:06,136 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:57:06,136 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:57:06,136 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:57:06,163 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-03 02:57:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-03 02:57:06,180 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:06,181 INFO L411 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] [2019-10-03 02:57:06,183 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:06,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1514827661, now seen corresponding path program 1 times [2019-10-03 02:57:06,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:06,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:06,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:06,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:06,247 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:06,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:06,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:57:06,571 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:06,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:57:06,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:57:06,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:06,600 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-10-03 02:57:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:06,634 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2019-10-03 02:57:06,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:57:06,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-03 02:57:06,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:06,649 INFO L225 Difference]: With dead ends: 157 [2019-10-03 02:57:06,649 INFO L226 Difference]: Without dead ends: 146 [2019-10-03 02:57:06,651 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-10-03 02:57:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-10-03 02:57:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-03 02:57:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-10-03 02:57:06,718 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2019-10-03 02:57:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:06,718 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-10-03 02:57:06,718 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:57:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-10-03 02:57:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-03 02:57:06,722 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:06,722 INFO L411 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] [2019-10-03 02:57:06,723 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:06,723 INFO L82 PathProgramCache]: Analyzing trace with hash -932487912, now seen corresponding path program 1 times [2019-10-03 02:57:06,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:06,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:06,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:06,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:06,727 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:06,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:06,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:57:06,887 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:06,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:57:06,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:57:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:57:06,890 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 3 states. [2019-10-03 02:57:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:06,914 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2019-10-03 02:57:06,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:57:06,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-03 02:57:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:06,917 INFO L225 Difference]: With dead ends: 137 [2019-10-03 02:57:06,918 INFO L226 Difference]: Without dead ends: 137 [2019-10-03 02:57:06,918 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:57:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-10-03 02:57:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-10-03 02:57:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-03 02:57:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-10-03 02:57:06,932 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2019-10-03 02:57:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:06,933 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-10-03 02:57:06,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:57:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-10-03 02:57:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-03 02:57:06,935 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:06,935 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:06,935 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash -896226788, now seen corresponding path program 1 times [2019-10-03 02:57:06,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:06,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:06,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:06,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:06,939 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:07,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:07,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:57:07,093 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:07,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:57:07,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:57:07,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:57:07,094 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 7 states. [2019-10-03 02:57:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:07,654 INFO L93 Difference]: Finished difference Result 300 states and 358 transitions. [2019-10-03 02:57:07,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:57:07,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-03 02:57:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:07,661 INFO L225 Difference]: With dead ends: 300 [2019-10-03 02:57:07,662 INFO L226 Difference]: Without dead ends: 300 [2019-10-03 02:57:07,662 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-03 02:57:07,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-10-03 02:57:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2019-10-03 02:57:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-10-03 02:57:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2019-10-03 02:57:07,722 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2019-10-03 02:57:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:07,722 INFO L475 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2019-10-03 02:57:07,723 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:57:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2019-10-03 02:57:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-03 02:57:07,728 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:07,728 INFO L411 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] [2019-10-03 02:57:07,729 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash 278011294, now seen corresponding path program 1 times [2019-10-03 02:57:07,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:07,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:07,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:07,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:07,783 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:07,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:07,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:57:07,931 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:07,931 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:57:07,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:57:07,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:57:07,932 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 6 states. [2019-10-03 02:57:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:08,189 INFO L93 Difference]: Finished difference Result 545 states and 660 transitions. [2019-10-03 02:57:08,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:57:08,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-10-03 02:57:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:08,201 INFO L225 Difference]: With dead ends: 545 [2019-10-03 02:57:08,201 INFO L226 Difference]: Without dead ends: 545 [2019-10-03 02:57:08,202 INFO L640 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 [2019-10-03 02:57:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2019-10-03 02:57:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2019-10-03 02:57:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-03 02:57:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 654 transitions. [2019-10-03 02:57:08,273 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 654 transitions. Word has length 57 [2019-10-03 02:57:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:08,277 INFO L475 AbstractCegarLoop]: Abstraction has 539 states and 654 transitions. [2019-10-03 02:57:08,277 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:57:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 654 transitions. [2019-10-03 02:57:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-03 02:57:08,290 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:08,291 INFO L411 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] [2019-10-03 02:57:08,291 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:08,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1238143586, now seen corresponding path program 1 times [2019-10-03 02:57:08,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:08,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:08,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:08,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:08,295 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:08,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:08,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:57:08,439 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:08,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:57:08,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:57:08,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:57:08,442 INFO L87 Difference]: Start difference. First operand 539 states and 654 transitions. Second operand 7 states. [2019-10-03 02:57:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:09,200 INFO L93 Difference]: Finished difference Result 865 states and 1094 transitions. [2019-10-03 02:57:09,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-03 02:57:09,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-03 02:57:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:09,207 INFO L225 Difference]: With dead ends: 865 [2019-10-03 02:57:09,207 INFO L226 Difference]: Without dead ends: 865 [2019-10-03 02:57:09,207 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-03 02:57:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2019-10-03 02:57:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 769. [2019-10-03 02:57:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2019-10-03 02:57:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 931 transitions. [2019-10-03 02:57:09,273 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 931 transitions. Word has length 61 [2019-10-03 02:57:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:09,274 INFO L475 AbstractCegarLoop]: Abstraction has 769 states and 931 transitions. [2019-10-03 02:57:09,274 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:57:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 931 transitions. [2019-10-03 02:57:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-03 02:57:09,277 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:09,277 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:09,277 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:09,278 INFO L82 PathProgramCache]: Analyzing trace with hash 726814707, now seen corresponding path program 1 times [2019-10-03 02:57:09,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:09,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:09,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:09,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:09,281 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:57:09,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:09,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:57:09,358 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:09,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:57:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:57:09,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:57:09,360 INFO L87 Difference]: Start difference. First operand 769 states and 931 transitions. Second operand 6 states. [2019-10-03 02:57:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:09,406 INFO L93 Difference]: Finished difference Result 797 states and 963 transitions. [2019-10-03 02:57:09,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:57:09,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-03 02:57:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:09,417 INFO L225 Difference]: With dead ends: 797 [2019-10-03 02:57:09,417 INFO L226 Difference]: Without dead ends: 797 [2019-10-03 02:57:09,417 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:57:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2019-10-03 02:57:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 789. [2019-10-03 02:57:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-03 02:57:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 951 transitions. [2019-10-03 02:57:09,462 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 951 transitions. Word has length 98 [2019-10-03 02:57:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:09,463 INFO L475 AbstractCegarLoop]: Abstraction has 789 states and 951 transitions. [2019-10-03 02:57:09,463 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:57:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 951 transitions. [2019-10-03 02:57:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-03 02:57:09,473 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:09,474 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:09,474 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1620301045, now seen corresponding path program 1 times [2019-10-03 02:57:09,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:09,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:09,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:09,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:09,481 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:57:09,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:09,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:57:09,592 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:09,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:57:09,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:57:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:57:09,593 INFO L87 Difference]: Start difference. First operand 789 states and 951 transitions. Second operand 8 states. [2019-10-03 02:57:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:09,628 INFO L93 Difference]: Finished difference Result 817 states and 979 transitions. [2019-10-03 02:57:09,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:57:09,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-10-03 02:57:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:09,633 INFO L225 Difference]: With dead ends: 817 [2019-10-03 02:57:09,634 INFO L226 Difference]: Without dead ends: 817 [2019-10-03 02:57:09,634 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:57:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2019-10-03 02:57:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 805. [2019-10-03 02:57:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-03 02:57:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 967 transitions. [2019-10-03 02:57:09,673 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 967 transitions. Word has length 98 [2019-10-03 02:57:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:09,674 INFO L475 AbstractCegarLoop]: Abstraction has 805 states and 967 transitions. [2019-10-03 02:57:09,674 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:57:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 967 transitions. [2019-10-03 02:57:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-03 02:57:09,679 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:09,679 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:09,679 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:09,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:09,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1612541686, now seen corresponding path program 1 times [2019-10-03 02:57:09,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:09,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:09,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:09,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:09,683 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:57:09,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:09,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:57:09,776 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:09,777 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:57:09,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:57:09,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:57:09,778 INFO L87 Difference]: Start difference. First operand 805 states and 967 transitions. Second operand 4 states. [2019-10-03 02:57:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:10,011 INFO L93 Difference]: Finished difference Result 1766 states and 2211 transitions. [2019-10-03 02:57:10,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:57:10,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-10-03 02:57:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:10,022 INFO L225 Difference]: With dead ends: 1766 [2019-10-03 02:57:10,022 INFO L226 Difference]: Without dead ends: 1766 [2019-10-03 02:57:10,023 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:57:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-10-03 02:57:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1735. [2019-10-03 02:57:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2019-10-03 02:57:10,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2139 transitions. [2019-10-03 02:57:10,119 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2139 transitions. Word has length 98 [2019-10-03 02:57:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:10,119 INFO L475 AbstractCegarLoop]: Abstraction has 1735 states and 2139 transitions. [2019-10-03 02:57:10,119 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:57:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2139 transitions. [2019-10-03 02:57:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-03 02:57:10,123 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:10,123 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:10,124 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:10,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1468895920, now seen corresponding path program 1 times [2019-10-03 02:57:10,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:10,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:10,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:10,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:10,127 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:57:10,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:57:10,291 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:57:10,292 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-10-03 02:57:10,295 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [210], [212], [217], [220], [223], [225], [230], [232], [233], [234], [235], [241], [245], [285], [288], [290], [293], [303], [306], [310], [311], [314], [315], [316], [339], [341], [342], [409], [410], [415], [417], [420], [424], [426], [429], [431], [434], [447], [448], [449], [450], [451], [452], [453], [454], [455], [497], [498], [499], [500], [501], [502], [505], [509], [510], [511], [512], [513], [514], [517], [518], [519], [525], [526], [527], [528], [535], [537], [538], [543], [544], [545], [547], [548], [549], [550], [551] [2019-10-03 02:57:10,339 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:57:10,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:57:10,418 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:57:10,419 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. [2019-10-03 02:57:10,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:10,423 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:57:10,468 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:57:10,468 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:57:10,472 INFO L420 sIntCurrentIteration]: We unified 101 AI predicates to 101 [2019-10-03 02:57:10,472 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:57:10,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:57:10,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-10-03 02:57:10,473 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:10,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:57:10,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:57:10,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:10,474 INFO L87 Difference]: Start difference. First operand 1735 states and 2139 transitions. Second operand 2 states. [2019-10-03 02:57:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:10,475 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:57:10,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:57:10,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 102 [2019-10-03 02:57:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:10,476 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:57:10,476 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:57:10,476 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:57:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:57:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:57:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:57:10,477 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2019-10-03 02:57:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:10,477 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:57:10,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:57:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:57:10,478 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:57:10,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:57:10 BoogieIcfgContainer [2019-10-03 02:57:10,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:57:10,487 INFO L168 Benchmark]: Toolchain (without parser) took 6553.79 ms. Allocated memory was 131.1 MB in the beginning and 347.6 MB in the end (delta: 216.5 MB). Free memory was 85.4 MB in the beginning and 249.0 MB in the end (delta: -163.6 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:10,488 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 131.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:57:10,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.75 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 85.2 MB in the beginning and 159.8 MB in the end (delta: -74.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:10,490 INFO L168 Benchmark]: Boogie Preprocessor took 86.45 ms. Allocated memory is still 197.7 MB. Free memory was 159.8 MB in the beginning and 155.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:10,491 INFO L168 Benchmark]: RCFGBuilder took 1304.01 ms. Allocated memory was 197.7 MB in the beginning and 218.1 MB in the end (delta: 20.4 MB). Free memory was 155.9 MB in the beginning and 185.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:10,492 INFO L168 Benchmark]: TraceAbstraction took 4425.40 ms. Allocated memory was 218.1 MB in the beginning and 347.6 MB in the end (delta: 129.5 MB). Free memory was 184.3 MB in the beginning and 249.0 MB in the end (delta: -64.6 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:10,496 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 131.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.75 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 85.2 MB in the beginning and 159.8 MB in the end (delta: -74.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.45 ms. Allocated memory is still 197.7 MB. Free memory was 159.8 MB in the beginning and 155.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1304.01 ms. Allocated memory was 197.7 MB in the beginning and 218.1 MB in the end (delta: 20.4 MB). Free memory was 155.9 MB in the beginning and 185.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4425.40 ms. Allocated memory was 218.1 MB in the beginning and 347.6 MB in the end (delta: 129.5 MB). Free memory was 184.3 MB in the beginning and 249.0 MB in the end (delta: -64.6 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 183]: 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 42 procedures, 248 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1452 SDtfs, 795 SDslu, 3489 SDs, 0 SdLazy, 943 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1735occurred 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, 1.0693069306930694 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 161 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 658 NumberOfCodeBlocks, 658 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 649 ConstructedInterpolants, 0 QuantifiedInterpolants, 81453 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...