java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:48,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:48,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:48,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:48,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:48,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:48,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:48,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:48,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:48,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:48,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:48,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:48,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:48,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:48,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:48,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:48,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:48,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:48,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:48,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:48,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:48,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:48,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:48,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:48,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:48,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:48,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:48,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:48,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:48,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:48,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:48,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:48,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:48,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:48,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:48,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:48,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:48,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:48,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:48,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:48,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:48,981 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 17:09:49,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:49,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:49,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:49,009 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:49,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:49,010 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:49,010 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:49,011 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:49,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:49,011 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:49,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:49,014 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:49,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:49,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:49,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:49,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:49,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:49,015 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:49,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:49,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:49,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:49,016 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:49,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:49,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:49,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:49,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:49,017 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:49,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:49,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:49,018 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:49,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:49,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:49,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:49,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:49,074 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:49,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-09-16 17:09:49,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf1939fa/ea37544bf9a24d19b44d55f290a794d5/FLAG70fc4f10c [2019-09-16 17:09:49,759 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:49,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-09-16 17:09:49,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf1939fa/ea37544bf9a24d19b44d55f290a794d5/FLAG70fc4f10c [2019-09-16 17:09:50,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf1939fa/ea37544bf9a24d19b44d55f290a794d5 [2019-09-16 17:09:50,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:50,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:50,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:50,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:50,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:50,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be31226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50, skipping insertion in model container [2019-09-16 17:09:50,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,068 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:50,120 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:50,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:50,561 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:50,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:50,690 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:50,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50 WrapperNode [2019-09-16 17:09:50,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:50,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:50,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:50,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:50,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (1/1) ... [2019-09-16 17:09:50,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:50,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:50,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:50,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:50,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (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 17:09:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:50,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:09:50,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:50,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:09:50,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:50,874 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:09:50,875 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:50,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:50,878 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:50,878 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:50,878 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:50,878 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:09:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:50,883 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:50,883 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:50,883 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:50,883 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:50,883 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:50,883 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:50,884 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:50,884 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:50,884 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:50,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:50,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:50,884 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:09:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:09:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:52,024 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:52,025 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:52,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:52 BoogieIcfgContainer [2019-09-16 17:09:52,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:52,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:52,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:52,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:52,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:50" (1/3) ... [2019-09-16 17:09:52,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a440ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:52, skipping insertion in model container [2019-09-16 17:09:52,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:50" (2/3) ... [2019-09-16 17:09:52,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a440ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:52, skipping insertion in model container [2019-09-16 17:09:52,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:52" (3/3) ... [2019-09-16 17:09:52,039 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2019-09-16 17:09:52,050 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:52,064 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:52,082 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:52,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:52,115 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:52,115 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:52,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:52,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:52,116 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:52,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:52,118 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-09-16 17:09:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:52,156 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:52,157 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] [2019-09-16 17:09:52,160 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:52,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1391539258, now seen corresponding path program 1 times [2019-09-16 17:09:52,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:52,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:52,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,232 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:52,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:52,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:52,594 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:52,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:52,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:52,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:52,618 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 2 states. [2019-09-16 17:09:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:52,651 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2019-09-16 17:09:52,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:52,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:52,674 INFO L225 Difference]: With dead ends: 164 [2019-09-16 17:09:52,675 INFO L226 Difference]: Without dead ends: 153 [2019-09-16 17:09:52,676 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 17:09:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-16 17:09:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-16 17:09:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-16 17:09:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2019-09-16 17:09:52,731 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 59 [2019-09-16 17:09:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:52,732 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2019-09-16 17:09:52,732 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2019-09-16 17:09:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:52,736 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:52,736 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] [2019-09-16 17:09:52,737 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:52,737 INFO L82 PathProgramCache]: Analyzing trace with hash 404948371, now seen corresponding path program 1 times [2019-09-16 17:09:52,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:52,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:52,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,740 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:52,848 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 17:09:52,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:52,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:52,849 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:52,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:52,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:52,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:52,852 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 3 states. [2019-09-16 17:09:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:52,888 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2019-09-16 17:09:52,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:52,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:52,896 INFO L225 Difference]: With dead ends: 144 [2019-09-16 17:09:52,897 INFO L226 Difference]: Without dead ends: 144 [2019-09-16 17:09:52,898 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 17:09:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-16 17:09:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-16 17:09:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-16 17:09:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-09-16 17:09:52,915 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 60 [2019-09-16 17:09:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:52,915 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-09-16 17:09:52,916 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-09-16 17:09:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 17:09:52,919 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:52,919 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] [2019-09-16 17:09:52,919 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:52,920 INFO L82 PathProgramCache]: Analyzing trace with hash 539093391, now seen corresponding path program 1 times [2019-09-16 17:09:52,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:52,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:52,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,923 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:53,157 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 17:09:53,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:53,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:53,158 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:53,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:53,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:53,161 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 7 states. [2019-09-16 17:09:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:53,739 INFO L93 Difference]: Finished difference Result 316 states and 380 transitions. [2019-09-16 17:09:53,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:53,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-16 17:09:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:53,750 INFO L225 Difference]: With dead ends: 316 [2019-09-16 17:09:53,752 INFO L226 Difference]: Without dead ends: 316 [2019-09-16 17:09:53,753 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 17:09:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2019-09-16 17:09:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 304. [2019-09-16 17:09:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-09-16 17:09:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2019-09-16 17:09:53,813 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 65 [2019-09-16 17:09:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:53,814 INFO L475 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2019-09-16 17:09:53,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2019-09-16 17:09:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:53,821 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:53,821 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] [2019-09-16 17:09:53,822 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -652418830, now seen corresponding path program 1 times [2019-09-16 17:09:53,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:53,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:53,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,827 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:53,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:53,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:53,958 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:53,959 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:53,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:53,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:53,959 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 7 states. [2019-09-16 17:09:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,769 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2019-09-16 17:09:54,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:54,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:09:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,774 INFO L225 Difference]: With dead ends: 508 [2019-09-16 17:09:54,775 INFO L226 Difference]: Without dead ends: 508 [2019-09-16 17:09:54,775 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 17:09:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-09-16 17:09:54,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 454. [2019-09-16 17:09:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-09-16 17:09:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 541 transitions. [2019-09-16 17:09:54,810 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 541 transitions. Word has length 70 [2019-09-16 17:09:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,811 INFO L475 AbstractCegarLoop]: Abstraction has 454 states and 541 transitions. [2019-09-16 17:09:54,811 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 541 transitions. [2019-09-16 17:09:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:09:54,817 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,817 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 17:09:54,817 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,818 INFO L82 PathProgramCache]: Analyzing trace with hash -918633805, now seen corresponding path program 1 times [2019-09-16 17:09:54,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,822 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,012 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 17:09:55,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:55,013 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,014 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:55,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:55,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:55,015 INFO L87 Difference]: Start difference. First operand 454 states and 541 transitions. Second operand 4 states. [2019-09-16 17:09:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:55,298 INFO L93 Difference]: Finished difference Result 1224 states and 1527 transitions. [2019-09-16 17:09:55,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:55,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-16 17:09:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:55,309 INFO L225 Difference]: With dead ends: 1224 [2019-09-16 17:09:55,309 INFO L226 Difference]: Without dead ends: 1224 [2019-09-16 17:09:55,309 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 17:09:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2019-09-16 17:09:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1198. [2019-09-16 17:09:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-09-16 17:09:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1479 transitions. [2019-09-16 17:09:55,375 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1479 transitions. Word has length 108 [2019-09-16 17:09:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:55,376 INFO L475 AbstractCegarLoop]: Abstraction has 1198 states and 1479 transitions. [2019-09-16 17:09:55,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1479 transitions. [2019-09-16 17:09:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:09:55,380 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:55,380 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 17:09:55,380 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:55,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -678093676, now seen corresponding path program 1 times [2019-09-16 17:09:55,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:55,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:55,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,385 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,484 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 17:09:55,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:55,485 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:55,486 INFO L87 Difference]: Start difference. First operand 1198 states and 1479 transitions. Second operand 6 states. [2019-09-16 17:09:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:55,524 INFO L93 Difference]: Finished difference Result 1240 states and 1531 transitions. [2019-09-16 17:09:55,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:55,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-16 17:09:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:55,532 INFO L225 Difference]: With dead ends: 1240 [2019-09-16 17:09:55,532 INFO L226 Difference]: Without dead ends: 1240 [2019-09-16 17:09:55,533 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 17:09:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-09-16 17:09:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1228. [2019-09-16 17:09:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2019-09-16 17:09:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1511 transitions. [2019-09-16 17:09:55,581 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1511 transitions. Word has length 108 [2019-09-16 17:09:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:55,582 INFO L475 AbstractCegarLoop]: Abstraction has 1228 states and 1511 transitions. [2019-09-16 17:09:55,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1511 transitions. [2019-09-16 17:09:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:09:55,586 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:55,586 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 17:09:55,586 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1250179026, now seen corresponding path program 1 times [2019-09-16 17:09:55,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:55,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:55,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,589 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,679 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 17:09:55,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:55,680 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,680 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:55,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:55,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:55,681 INFO L87 Difference]: Start difference. First operand 1228 states and 1511 transitions. Second operand 8 states. [2019-09-16 17:09:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:55,717 INFO L93 Difference]: Finished difference Result 1017 states and 1238 transitions. [2019-09-16 17:09:55,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:55,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-16 17:09:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:55,723 INFO L225 Difference]: With dead ends: 1017 [2019-09-16 17:09:55,724 INFO L226 Difference]: Without dead ends: 1017 [2019-09-16 17:09:55,724 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 17:09:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2019-09-16 17:09:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2019-09-16 17:09:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2019-09-16 17:09:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1238 transitions. [2019-09-16 17:09:55,789 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1238 transitions. Word has length 108 [2019-09-16 17:09:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:55,789 INFO L475 AbstractCegarLoop]: Abstraction has 1017 states and 1238 transitions. [2019-09-16 17:09:55,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1238 transitions. [2019-09-16 17:09:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-16 17:09:55,792 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:55,793 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, 1, 1, 1, 1] [2019-09-16 17:09:55,793 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1890897259, now seen corresponding path program 1 times [2019-09-16 17:09:55,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:55,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:55,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,797 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,986 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 17:09:55,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:55,987 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:55,988 INFO L87 Difference]: Start difference. First operand 1017 states and 1238 transitions. Second operand 9 states. [2019-09-16 17:09:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,322 INFO L93 Difference]: Finished difference Result 1985 states and 2421 transitions. [2019-09-16 17:09:57,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:57,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-16 17:09:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,339 INFO L225 Difference]: With dead ends: 1985 [2019-09-16 17:09:57,340 INFO L226 Difference]: Without dead ends: 1985 [2019-09-16 17:09:57,341 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2019-09-16 17:09:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1752. [2019-09-16 17:09:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1752 states. [2019-09-16 17:09:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2101 transitions. [2019-09-16 17:09:57,566 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2101 transitions. Word has length 112 [2019-09-16 17:09:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,566 INFO L475 AbstractCegarLoop]: Abstraction has 1752 states and 2101 transitions. [2019-09-16 17:09:57,566 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2101 transitions. [2019-09-16 17:09:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-16 17:09:57,571 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,571 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:57,572 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash 828062466, now seen corresponding path program 1 times [2019-09-16 17:09:57,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,576 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-16 17:09:57,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:57,784 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:57,787 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2019-09-16 17:09:57,791 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [125], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [173], [179], [196], [198], [203], [206], [207], [209], [214], [216], [217], [218], [219], [223], [226], [230], [236], [263], [264], [267], [271], [276], [280], [281], [284], [285], [286], [288], [289], [290], [292], [295], [297], [300], [303], [312], [314], [315], [318], [320], [323], [330], [333], [334], [335], [359], [361], [362], [380], [381], [431], [432], [442], [450], [451], [452], [453], [454], [455], [456], [457], [458], [492], [493], [496], [497], [498], [499], [500], [501], [508], [509], [512], [513], [514], [515], [516], [517], [518], [519], [520], [521], [522], [523], [524], [525], [530], [531], [532], [533], [534], [535], [536], [538], [539], [540], [541], [544], [545], [548], [549], [550], [552], [553], [558], [559], [560] [2019-09-16 17:09:57,855 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:57,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:57,945 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:57,947 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:09:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,952 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:58,048 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:58,049 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:58,060 INFO L420 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2019-09-16 17:09:58,060 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:58,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:58,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:58,061 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:58,062 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:58,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:58,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:58,063 INFO L87 Difference]: Start difference. First operand 1752 states and 2101 transitions. Second operand 2 states. [2019-09-16 17:09:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:58,063 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:58,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:58,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 172 [2019-09-16 17:09:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:58,064 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:58,064 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:58,065 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 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 17:09:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:58,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:58,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2019-09-16 17:09:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:58,066 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:58,066 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:58,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:58,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:58 BoogieIcfgContainer [2019-09-16 17:09:58,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:58,075 INFO L168 Benchmark]: Toolchain (without parser) took 8022.42 ms. Allocated memory was 138.4 MB in the beginning and 340.8 MB in the end (delta: 202.4 MB). Free memory was 83.6 MB in the beginning and 220.6 MB in the end (delta: -137.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:58,077 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:58,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.36 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 83.3 MB in the beginning and 162.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:58,080 INFO L168 Benchmark]: Boogie Preprocessor took 89.15 ms. Allocated memory is still 198.2 MB. Free memory was 162.7 MB in the beginning and 157.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:58,082 INFO L168 Benchmark]: RCFGBuilder took 1245.17 ms. Allocated memory was 198.2 MB in the beginning and 219.7 MB in the end (delta: 21.5 MB). Free memory was 157.4 MB in the beginning and 185.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:58,088 INFO L168 Benchmark]: TraceAbstraction took 6044.07 ms. Allocated memory was 219.7 MB in the beginning and 340.8 MB in the end (delta: 121.1 MB). Free memory was 185.9 MB in the beginning and 220.6 MB in the end (delta: -34.7 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:58,095 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.36 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 83.3 MB in the beginning and 162.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.15 ms. Allocated memory is still 198.2 MB. Free memory was 162.7 MB in the beginning and 157.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.17 ms. Allocated memory was 198.2 MB in the beginning and 219.7 MB in the end (delta: 21.5 MB). Free memory was 157.4 MB in the beginning and 185.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6044.07 ms. Allocated memory was 219.7 MB in the beginning and 340.8 MB in the end (delta: 121.1 MB). Free memory was 185.9 MB in the beginning and 220.6 MB in the end (delta: -34.7 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 410]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 252 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1623 SDtfs, 1204 SDslu, 3595 SDs, 0 SdLazy, 1812 SolverSat, 336 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1752occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8128654970760234 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 337 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 862 NumberOfCodeBlocks, 862 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 853 ConstructedInterpolants, 0 QuantifiedInterpolants, 146027 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 68/75 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...