java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:33,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:33,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:33,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:33,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:33,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:33,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:33,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:33,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:33,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:33,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:33,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:33,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:33,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:33,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:33,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:33,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:33,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:33,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:33,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:33,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:33,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:33,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:33,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:33,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:33,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:33,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:33,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:33,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:33,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:33,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:33,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:33,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:33,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:33,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:33,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:33,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:33,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:33,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:33,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:33,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:33,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:08:33,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:33,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:33,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:33,951 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:33,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:33,952 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:33,953 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:33,953 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:33,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:33,954 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:33,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:33,956 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:33,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:33,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:33,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:33,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:33,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:33,958 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:33,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:33,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:33,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:33,959 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:33,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:33,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:33,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:33,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:33,960 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:33,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:33,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:33,961 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:34,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:34,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:34,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:34,046 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:34,048 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:34,049 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-09-16 17:08:34,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f816e2186/1ced68a1663847ab887ed8b11a7e8570/FLAGf525e9a72 [2019-09-16 17:08:34,624 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:34,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-09-16 17:08:34,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f816e2186/1ced68a1663847ab887ed8b11a7e8570/FLAGf525e9a72 [2019-09-16 17:08:34,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f816e2186/1ced68a1663847ab887ed8b11a7e8570 [2019-09-16 17:08:34,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:34,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:34,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:34,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:34,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:34,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:34" (1/1) ... [2019-09-16 17:08:34,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a34633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:34, skipping insertion in model container [2019-09-16 17:08:34,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:34" (1/1) ... [2019-09-16 17:08:34,986 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:35,047 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:35,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:35,554 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:35,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:35,740 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:35,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35 WrapperNode [2019-09-16 17:08:35,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:35,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:35,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:35,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:35,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... [2019-09-16 17:08:35,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:35,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:35,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:35,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:35,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:08:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:35,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:35,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:08:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:08:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:08:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-16 17:08:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-16 17:08:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-16 17:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:37,138 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:37,139 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:37,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:37 BoogieIcfgContainer [2019-09-16 17:08:37,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:37,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:37,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:37,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:37,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:34" (1/3) ... [2019-09-16 17:08:37,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33085f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:37, skipping insertion in model container [2019-09-16 17:08:37,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:35" (2/3) ... [2019-09-16 17:08:37,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33085f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:37, skipping insertion in model container [2019-09-16 17:08:37,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:37" (3/3) ... [2019-09-16 17:08:37,150 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2019-09-16 17:08:37,158 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:37,166 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:37,183 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:37,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:37,208 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:37,208 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:37,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:37,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:37,208 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:37,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:37,209 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-09-16 17:08:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-16 17:08:37,242 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:37,243 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:37,245 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:37,251 INFO L82 PathProgramCache]: Analyzing trace with hash 694173544, now seen corresponding path program 1 times [2019-09-16 17:08:37,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:37,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:37,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:37,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:37,313 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:37,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:37,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:37,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:37,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:37,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:37,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:37,668 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2019-09-16 17:08:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:37,698 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2019-09-16 17:08:37,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:37,700 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-16 17:08:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:37,713 INFO L225 Difference]: With dead ends: 166 [2019-09-16 17:08:37,713 INFO L226 Difference]: Without dead ends: 155 [2019-09-16 17:08:37,715 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-09-16 17:08:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-09-16 17:08:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-09-16 17:08:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2019-09-16 17:08:37,773 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 51 [2019-09-16 17:08:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:37,774 INFO L475 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2019-09-16 17:08:37,774 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2019-09-16 17:08:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-16 17:08:37,780 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:37,782 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:37,782 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1863175654, now seen corresponding path program 1 times [2019-09-16 17:08:37,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:37,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:37,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:37,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:37,788 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:37,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:37,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:37,958 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:37,961 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:37,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:37,962 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand 3 states. [2019-09-16 17:08:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:37,997 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2019-09-16 17:08:37,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:37,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-16 17:08:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:38,006 INFO L225 Difference]: With dead ends: 146 [2019-09-16 17:08:38,007 INFO L226 Difference]: Without dead ends: 146 [2019-09-16 17:08:38,010 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:38,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-16 17:08:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-16 17:08:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-16 17:08:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2019-09-16 17:08:38,041 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 52 [2019-09-16 17:08:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:38,041 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2019-09-16 17:08:38,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2019-09-16 17:08:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-16 17:08:38,044 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:38,044 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:38,045 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash 284161781, now seen corresponding path program 1 times [2019-09-16 17:08:38,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:38,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:38,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:38,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:38,048 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:38,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:38,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:38,178 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:38,179 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:38,180 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand 7 states. [2019-09-16 17:08:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:38,800 INFO L93 Difference]: Finished difference Result 315 states and 378 transitions. [2019-09-16 17:08:38,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:38,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-16 17:08:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:38,809 INFO L225 Difference]: With dead ends: 315 [2019-09-16 17:08:38,810 INFO L226 Difference]: Without dead ends: 315 [2019-09-16 17:08:38,813 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:08:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-09-16 17:08:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 303. [2019-09-16 17:08:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2019-09-16 17:08:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 366 transitions. [2019-09-16 17:08:38,860 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 366 transitions. Word has length 57 [2019-09-16 17:08:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:38,860 INFO L475 AbstractCegarLoop]: Abstraction has 303 states and 366 transitions. [2019-09-16 17:08:38,860 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 366 transitions. [2019-09-16 17:08:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-16 17:08:38,864 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:38,864 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:38,865 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:38,865 INFO L82 PathProgramCache]: Analyzing trace with hash 367003092, now seen corresponding path program 1 times [2019-09-16 17:08:38,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:38,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:38,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:38,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:38,868 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:38,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:38,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:38,971 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:38,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:38,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:38,972 INFO L87 Difference]: Start difference. First operand 303 states and 366 transitions. Second operand 6 states. [2019-09-16 17:08:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:39,250 INFO L93 Difference]: Finished difference Result 560 states and 678 transitions. [2019-09-16 17:08:39,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:39,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-16 17:08:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:39,259 INFO L225 Difference]: With dead ends: 560 [2019-09-16 17:08:39,259 INFO L226 Difference]: Without dead ends: 560 [2019-09-16 17:08:39,261 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-09-16 17:08:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 554. [2019-09-16 17:08:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-16 17:08:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 672 transitions. [2019-09-16 17:08:39,327 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 672 transitions. Word has length 62 [2019-09-16 17:08:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:39,334 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 672 transitions. [2019-09-16 17:08:39,334 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 672 transitions. [2019-09-16 17:08:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-16 17:08:39,343 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:39,343 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:39,343 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:39,343 INFO L82 PathProgramCache]: Analyzing trace with hash -612062288, now seen corresponding path program 1 times [2019-09-16 17:08:39,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:39,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:39,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:39,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:39,349 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:39,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:39,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:39,530 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:39,531 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:39,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:39,532 INFO L87 Difference]: Start difference. First operand 554 states and 672 transitions. Second operand 7 states. [2019-09-16 17:08:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:40,309 INFO L93 Difference]: Finished difference Result 889 states and 1122 transitions. [2019-09-16 17:08:40,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:08:40,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-16 17:08:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:40,316 INFO L225 Difference]: With dead ends: 889 [2019-09-16 17:08:40,316 INFO L226 Difference]: Without dead ends: 889 [2019-09-16 17:08:40,317 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:08:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2019-09-16 17:08:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 791. [2019-09-16 17:08:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-09-16 17:08:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 955 transitions. [2019-09-16 17:08:40,370 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 955 transitions. Word has length 66 [2019-09-16 17:08:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:40,371 INFO L475 AbstractCegarLoop]: Abstraction has 791 states and 955 transitions. [2019-09-16 17:08:40,371 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 955 transitions. [2019-09-16 17:08:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-16 17:08:40,380 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:40,381 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:40,381 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:40,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash 637474211, now seen corresponding path program 1 times [2019-09-16 17:08:40,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:40,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:40,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,388 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:40,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:40,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:40,527 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:40,528 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:40,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:40,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:40,529 INFO L87 Difference]: Start difference. First operand 791 states and 955 transitions. Second operand 6 states. [2019-09-16 17:08:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:40,564 INFO L93 Difference]: Finished difference Result 819 states and 987 transitions. [2019-09-16 17:08:40,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:40,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-09-16 17:08:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:40,570 INFO L225 Difference]: With dead ends: 819 [2019-09-16 17:08:40,571 INFO L226 Difference]: Without dead ends: 819 [2019-09-16 17:08:40,571 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-09-16 17:08:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2019-09-16 17:08:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-09-16 17:08:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-09-16 17:08:40,602 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 104 [2019-09-16 17:08:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:40,603 INFO L475 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-09-16 17:08:40,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-09-16 17:08:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-16 17:08:40,606 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:40,606 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:40,606 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1729220383, now seen corresponding path program 1 times [2019-09-16 17:08:40,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:40,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:40,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,609 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:40,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:40,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:08:40,693 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:40,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:08:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:08:40,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:40,695 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 8 states. [2019-09-16 17:08:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:40,726 INFO L93 Difference]: Finished difference Result 839 states and 1003 transitions. [2019-09-16 17:08:40,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:40,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-09-16 17:08:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:40,732 INFO L225 Difference]: With dead ends: 839 [2019-09-16 17:08:40,732 INFO L226 Difference]: Without dead ends: 839 [2019-09-16 17:08:40,733 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-16 17:08:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 827. [2019-09-16 17:08:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-09-16 17:08:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 991 transitions. [2019-09-16 17:08:40,764 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 991 transitions. Word has length 104 [2019-09-16 17:08:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:40,765 INFO L475 AbstractCegarLoop]: Abstraction has 827 states and 991 transitions. [2019-09-16 17:08:40,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:08:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 991 transitions. [2019-09-16 17:08:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-16 17:08:40,768 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:40,768 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:40,768 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:40,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1969760512, now seen corresponding path program 1 times [2019-09-16 17:08:40,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,771 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:40,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:40,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:08:40,880 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:40,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:08:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:08:40,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:40,881 INFO L87 Difference]: Start difference. First operand 827 states and 991 transitions. Second operand 4 states. [2019-09-16 17:08:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:41,109 INFO L93 Difference]: Finished difference Result 1814 states and 2263 transitions. [2019-09-16 17:08:41,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:08:41,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-09-16 17:08:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:41,120 INFO L225 Difference]: With dead ends: 1814 [2019-09-16 17:08:41,120 INFO L226 Difference]: Without dead ends: 1814 [2019-09-16 17:08:41,121 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2019-09-16 17:08:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1783. [2019-09-16 17:08:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2019-09-16 17:08:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2191 transitions. [2019-09-16 17:08:41,193 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2191 transitions. Word has length 104 [2019-09-16 17:08:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:41,194 INFO L475 AbstractCegarLoop]: Abstraction has 1783 states and 2191 transitions. [2019-09-16 17:08:41,194 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:08:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2191 transitions. [2019-09-16 17:08:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:08:41,198 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:41,199 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:41,199 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:41,199 INFO L82 PathProgramCache]: Analyzing trace with hash 672707866, now seen corresponding path program 1 times [2019-09-16 17:08:41,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:41,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:41,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:41,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:41,202 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:08:41,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:41,363 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:41,364 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 109 with the following transitions: [2019-09-16 17:08:41,367 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [184], [190], [198], [199], [202], [204], [207], [209], [212], [215], [236], [237], [238], [240], [245], [248], [251], [253], [258], [260], [261], [262], [263], [269], [273], [315], [318], [320], [323], [333], [336], [340], [341], [344], [345], [346], [370], [372], [373], [440], [441], [446], [448], [451], [459], [460], [461], [462], [463], [464], [465], [466], [467], [509], [510], [511], [512], [513], [514], [519], [523], [524], [525], [526], [527], [529], [530], [531], [532], [533], [534], [537], [538], [539], [545], [546], [547], [548], [555], [556], [557], [559], [560], [565], [566], [567] [2019-09-16 17:08:41,408 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:41,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:41,482 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:41,483 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 17:08:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:41,487 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:41,529 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:41,529 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:41,533 INFO L420 sIntCurrentIteration]: We unified 107 AI predicates to 107 [2019-09-16 17:08:41,533 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:41,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:41,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-16 17:08:41,534 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:41,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:41,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:41,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:41,535 INFO L87 Difference]: Start difference. First operand 1783 states and 2191 transitions. Second operand 2 states. [2019-09-16 17:08:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:41,536 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:41,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:41,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 108 [2019-09-16 17:08:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:41,536 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:41,536 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:41,537 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:41,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-09-16 17:08:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:41,538 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:41,538 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:41,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:41,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:41 BoogieIcfgContainer [2019-09-16 17:08:41,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:41,549 INFO L168 Benchmark]: Toolchain (without parser) took 6573.59 ms. Allocated memory was 139.5 MB in the beginning and 327.2 MB in the end (delta: 187.7 MB). Free memory was 86.4 MB in the beginning and 170.8 MB in the end (delta: -84.4 MB). Peak memory consumption was 103.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:41,551 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:41,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.56 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 86.2 MB in the beginning and 163.8 MB in the end (delta: -77.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:41,554 INFO L168 Benchmark]: Boogie Preprocessor took 128.62 ms. Allocated memory is still 199.8 MB. Free memory was 163.8 MB in the beginning and 159.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:41,555 INFO L168 Benchmark]: RCFGBuilder took 1269.52 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 159.4 MB in the beginning and 188.1 MB in the end (delta: -28.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:41,556 INFO L168 Benchmark]: TraceAbstraction took 4401.37 ms. Allocated memory was 223.3 MB in the beginning and 327.2 MB in the end (delta: 103.8 MB). Free memory was 186.7 MB in the beginning and 170.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:41,563 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.56 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 86.2 MB in the beginning and 163.8 MB in the end (delta: -77.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.62 ms. Allocated memory is still 199.8 MB. Free memory was 163.8 MB in the beginning and 159.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1269.52 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 159.4 MB in the beginning and 188.1 MB in the end (delta: -28.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4401.37 ms. Allocated memory was 223.3 MB in the beginning and 327.2 MB in the end (delta: 103.8 MB). Free memory was 186.7 MB in the beginning and 170.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 257 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1541 SDtfs, 840 SDslu, 3688 SDs, 0 SdLazy, 1008 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1783occurred 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, 1.0373831775700935 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 167 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 708 NumberOfCodeBlocks, 708 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 92658 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...