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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:50,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:50,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:50,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:50,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:50,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:50,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:50,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:50,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:50,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:50,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:50,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:50,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:50,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:50,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:50,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:50,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:50,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:50,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:50,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:50,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:50,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:50,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:50,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:50,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:50,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:50,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:50,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:50,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:50,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:50,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:50,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:50,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:50,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:50,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:50,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:50,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:50,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:50,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:50,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:50,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:50,978 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 17:09:51,003 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:51,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:51,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:51,005 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:51,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:51,006 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:51,006 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:51,006 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:51,006 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:51,007 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:51,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:51,009 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:51,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:51,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:51,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:51,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:51,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:51,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:51,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:51,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:51,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:51,012 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:51,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:51,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:51,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:51,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:51,013 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:51,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:51,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:51,014 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:51,070 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:51,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:51,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:51,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:51,098 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:51,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-09-16 17:09:51,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644d08a6d/3ecda77eeb57447faf975666556c5133/FLAGff23089c6 [2019-09-16 17:09:51,677 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:51,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-09-16 17:09:51,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644d08a6d/3ecda77eeb57447faf975666556c5133/FLAGff23089c6 [2019-09-16 17:09:51,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644d08a6d/3ecda77eeb57447faf975666556c5133 [2019-09-16 17:09:52,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:52,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:52,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:52,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:52,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:52,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@869f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52, skipping insertion in model container [2019-09-16 17:09:52,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,024 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:52,080 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:52,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:52,595 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:52,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:52,751 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:52,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52 WrapperNode [2019-09-16 17:09:52,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:52,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:52,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:52,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:52,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:52,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:52,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:52,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:52,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (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 17:09:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:09:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:09:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:09:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:09:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:54,069 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:54,070 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:54,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:54 BoogieIcfgContainer [2019-09-16 17:09:54,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:54,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:54,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:54,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:54,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:52" (1/3) ... [2019-09-16 17:09:54,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46251d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:54, skipping insertion in model container [2019-09-16 17:09:54,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (2/3) ... [2019-09-16 17:09:54,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46251d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:54, skipping insertion in model container [2019-09-16 17:09:54,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:54" (3/3) ... [2019-09-16 17:09:54,082 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-09-16 17:09:54,093 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:54,104 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:54,121 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:54,150 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:54,151 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:54,151 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:54,151 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:54,152 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:54,152 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:54,152 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:54,152 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-09-16 17:09:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:54,191 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,193 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 17:09:54,195 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2019-09-16 17:09:54,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,262 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,611 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 17:09:54,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:54,615 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:54,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:54,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:54,641 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-09-16 17:09:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,674 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2019-09-16 17:09:54,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:54,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,691 INFO L225 Difference]: With dead ends: 159 [2019-09-16 17:09:54,691 INFO L226 Difference]: Without dead ends: 148 [2019-09-16 17:09:54,693 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 17:09:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-09-16 17:09:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-09-16 17:09:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-16 17:09:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2019-09-16 17:09:54,754 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2019-09-16 17:09:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,755 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2019-09-16 17:09:54,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2019-09-16 17:09:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:54,760 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,760 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 17:09:54,760 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2019-09-16 17:09:54,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,764 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,875 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 17:09:54,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:54,876 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,879 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:54,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:54,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:54,880 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 3 states. [2019-09-16 17:09:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,911 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2019-09-16 17:09:54,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:54,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,919 INFO L225 Difference]: With dead ends: 139 [2019-09-16 17:09:54,919 INFO L226 Difference]: Without dead ends: 139 [2019-09-16 17:09:54,921 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 17:09:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-16 17:09:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-16 17:09:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-16 17:09:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-09-16 17:09:54,951 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2019-09-16 17:09:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,951 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-09-16 17:09:54,951 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-09-16 17:09:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 17:09:54,958 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,958 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 17:09:54,958 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2019-09-16 17:09:54,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,196 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 17:09:55,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:55,197 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,197 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:55,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:55,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:55,198 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 7 states. [2019-09-16 17:09:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:55,802 INFO L93 Difference]: Finished difference Result 306 states and 368 transitions. [2019-09-16 17:09:55,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:55,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-16 17:09:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:55,806 INFO L225 Difference]: With dead ends: 306 [2019-09-16 17:09:55,807 INFO L226 Difference]: Without dead ends: 306 [2019-09-16 17:09:55,807 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 17:09:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-09-16 17:09:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 294. [2019-09-16 17:09:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-16 17:09:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2019-09-16 17:09:55,860 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2019-09-16 17:09:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:55,866 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2019-09-16 17:09:55,866 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2019-09-16 17:09:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:55,874 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:55,874 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 17:09:55,875 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:55,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:55,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2019-09-16 17:09:55,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:55,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:55,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,878 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,992 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 17:09:55,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:55,992 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:55,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:55,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:55,995 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 7 states. [2019-09-16 17:09:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,831 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2019-09-16 17:09:56,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:56,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:09:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,836 INFO L225 Difference]: With dead ends: 478 [2019-09-16 17:09:56,837 INFO L226 Difference]: Without dead ends: 478 [2019-09-16 17:09:56,837 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:09:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-16 17:09:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 424. [2019-09-16 17:09:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-16 17:09:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 511 transitions. [2019-09-16 17:09:56,886 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 511 transitions. Word has length 70 [2019-09-16 17:09:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,889 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 511 transitions. [2019-09-16 17:09:56,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 511 transitions. [2019-09-16 17:09:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-16 17:09:56,895 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,895 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] [2019-09-16 17:09:56,895 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2019-09-16 17:09:56,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,900 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,043 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 17:09:57,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:57,044 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,045 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:57,046 INFO L87 Difference]: Start difference. First operand 424 states and 511 transitions. Second operand 6 states. [2019-09-16 17:09:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,095 INFO L93 Difference]: Finished difference Result 434 states and 521 transitions. [2019-09-16 17:09:57,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:57,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-16 17:09:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,103 INFO L225 Difference]: With dead ends: 434 [2019-09-16 17:09:57,103 INFO L226 Difference]: Without dead ends: 434 [2019-09-16 17:09:57,105 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 17:09:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-09-16 17:09:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2019-09-16 17:09:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-16 17:09:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-09-16 17:09:57,150 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2019-09-16 17:09:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,152 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-09-16 17:09:57,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-09-16 17:09:57,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-16 17:09:57,156 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,156 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] [2019-09-16 17:09:57,157 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2019-09-16 17:09:57,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,166 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,324 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 17:09:57,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:57,325 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:57,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:57,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:57,326 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 8 states. [2019-09-16 17:09:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,356 INFO L93 Difference]: Finished difference Result 448 states and 535 transitions. [2019-09-16 17:09:57,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:57,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-16 17:09:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,360 INFO L225 Difference]: With dead ends: 448 [2019-09-16 17:09:57,360 INFO L226 Difference]: Without dead ends: 448 [2019-09-16 17:09:57,361 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 17:09:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-09-16 17:09:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442. [2019-09-16 17:09:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-09-16 17:09:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2019-09-16 17:09:57,381 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2019-09-16 17:09:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,381 INFO L475 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2019-09-16 17:09:57,382 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2019-09-16 17:09:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-16 17:09:57,384 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,384 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] [2019-09-16 17:09:57,384 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,384 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2019-09-16 17:09:57,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,388 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,468 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 17:09:57,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:57,469 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,469 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:57,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:57,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:57,471 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 4 states. [2019-09-16 17:09:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,741 INFO L93 Difference]: Finished difference Result 1002 states and 1245 transitions. [2019-09-16 17:09:57,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:57,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-16 17:09:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,748 INFO L225 Difference]: With dead ends: 1002 [2019-09-16 17:09:57,748 INFO L226 Difference]: Without dead ends: 1002 [2019-09-16 17:09:57,748 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 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 17:09:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-09-16 17:09:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 985. [2019-09-16 17:09:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2019-09-16 17:09:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1208 transitions. [2019-09-16 17:09:57,802 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1208 transitions. Word has length 93 [2019-09-16 17:09:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,803 INFO L475 AbstractCegarLoop]: Abstraction has 985 states and 1208 transitions. [2019-09-16 17:09:57,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1208 transitions. [2019-09-16 17:09:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-16 17:09:57,806 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,806 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] [2019-09-16 17:09:57,808 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,808 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2019-09-16 17:09:57,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,814 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,994 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 17:09:57,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:57,995 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,996 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:57,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:57,997 INFO L87 Difference]: Start difference. First operand 985 states and 1208 transitions. Second operand 9 states. [2019-09-16 17:09:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,175 INFO L93 Difference]: Finished difference Result 1929 states and 2367 transitions. [2019-09-16 17:09:59,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:59,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-16 17:09:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,188 INFO L225 Difference]: With dead ends: 1929 [2019-09-16 17:09:59,188 INFO L226 Difference]: Without dead ends: 1929 [2019-09-16 17:09:59,189 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-09-16 17:09:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1696. [2019-09-16 17:09:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-09-16 17:09:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2047 transitions. [2019-09-16 17:09:59,284 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2047 transitions. Word has length 97 [2019-09-16 17:09:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,286 INFO L475 AbstractCegarLoop]: Abstraction has 1696 states and 2047 transitions. [2019-09-16 17:09:59,286 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2047 transitions. [2019-09-16 17:09:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-16 17:09:59,299 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:59,300 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2019-09-16 17:09:59,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,313 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-16 17:09:59,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:59,555 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:59,556 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2019-09-16 17:09:59,559 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [184], [190], [198], [199], [209], [210], [211], [212], [213], [215], [220], [222], [223], [227], [230], [234], [240], [271], [275], [278], [281], [283], [286], [293], [296], [299], [303], [304], [307], [308], [309], [311], [312], [313], [315], [318], [320], [323], [326], [335], [337], [338], [339], [433], [434], [444], [452], [453], [454], [455], [456], [457], [458], [459], [460], [494], [495], [496], [497], [500], [501], [502], [503], [504], [505], [512], [513], [516], [517], [518], [519], [520], [521], [522], [523], [524], [525], [530], [531], [532], [533], [536], [537], [538], [539], [540], [541], [542], [543], [544], [548], [549], [550], [558], [559], [560] [2019-09-16 17:09:59,627 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:59,628 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:59,731 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:59,733 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 17:09:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,740 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:59,799 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:59,799 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:59,807 INFO L420 sIntCurrentIteration]: We unified 158 AI predicates to 158 [2019-09-16 17:09:59,807 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:59,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:59,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:59,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:59,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:59,810 INFO L87 Difference]: Start difference. First operand 1696 states and 2047 transitions. Second operand 2 states. [2019-09-16 17:09:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,811 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:59,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:59,811 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 159 [2019-09-16 17:09:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,811 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:59,812 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:59,812 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 158 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 17:09:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:59,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:59,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 159 [2019-09-16 17:09:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,814 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:59,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:59,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:59,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:59 BoogieIcfgContainer [2019-09-16 17:09:59,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:59,824 INFO L168 Benchmark]: Toolchain (without parser) took 7812.57 ms. Allocated memory was 130.0 MB in the beginning and 354.4 MB in the end (delta: 224.4 MB). Free memory was 84.7 MB in the beginning and 104.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 204.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,825 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 130.0 MB. Free memory was 104.1 MB in the beginning and 103.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.25 ms. Allocated memory was 130.0 MB in the beginning and 198.2 MB in the end (delta: 68.2 MB). Free memory was 84.5 MB in the beginning and 161.6 MB in the end (delta: -77.1 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,829 INFO L168 Benchmark]: Boogie Preprocessor took 86.29 ms. Allocated memory is still 198.2 MB. Free memory was 161.6 MB in the beginning and 157.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,830 INFO L168 Benchmark]: RCFGBuilder took 1232.58 ms. Allocated memory was 198.2 MB in the beginning and 216.0 MB in the end (delta: 17.8 MB). Free memory was 157.6 MB in the beginning and 186.7 MB in the end (delta: -29.1 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,831 INFO L168 Benchmark]: TraceAbstraction took 5748.25 ms. Allocated memory was 216.0 MB in the beginning and 354.4 MB in the end (delta: 138.4 MB). Free memory was 185.3 MB in the beginning and 104.4 MB in the end (delta: 81.0 MB). Peak memory consumption was 219.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,835 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 130.0 MB. Free memory was 104.1 MB in the beginning and 103.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.25 ms. Allocated memory was 130.0 MB in the beginning and 198.2 MB in the end (delta: 68.2 MB). Free memory was 84.5 MB in the beginning and 161.6 MB in the end (delta: -77.1 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.29 ms. Allocated memory is still 198.2 MB. Free memory was 161.6 MB in the beginning and 157.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1232.58 ms. Allocated memory was 198.2 MB in the beginning and 216.0 MB in the end (delta: 17.8 MB). Free memory was 157.6 MB in the beginning and 186.7 MB in the end (delta: -29.1 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5748.25 ms. Allocated memory was 216.0 MB in the beginning and 354.4 MB in the end (delta: 138.4 MB). Free memory was 185.3 MB in the beginning and 104.4 MB in the end (delta: 81.0 MB). Peak memory consumption was 219.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: 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, 255 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1522 SDtfs, 1084 SDslu, 3468 SDs, 0 SdLazy, 1726 SolverSat, 291 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1696occurred 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, 0.8481012658227848 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 124242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 60/67 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...