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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:47,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:47,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:47,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:47,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:47,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:47,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:47,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:47,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:47,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:47,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:47,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:47,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:47,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:47,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:47,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:47,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:47,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:47,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:47,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:47,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:47,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:47,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:47,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:47,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:47,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:47,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:47,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:47,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:47,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:47,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:47,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:47,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:47,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:47,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:47,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:47,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:47,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:47,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:47,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:47,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:47,071 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 [2019-09-20 13:31:47,097 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:47,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:47,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:47,099 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:47,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:47,099 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:47,100 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:47,100 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:47,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:47,100 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:47,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:47,103 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:47,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:47,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:47,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:47,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:47,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:47,105 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:47,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:47,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:47,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:47,106 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:47,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:47,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:47,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:47,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:47,107 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:47,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:47,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:47,108 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:47,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:47,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:47,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:47,198 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:47,199 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:47,200 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-09-20 13:31:47,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b7f5028/14d88aaa93344855b38110e65f924651/FLAGc6067d2b5 [2019-09-20 13:31:47,833 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:47,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-09-20 13:31:47,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b7f5028/14d88aaa93344855b38110e65f924651/FLAGc6067d2b5 [2019-09-20 13:31:48,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b7f5028/14d88aaa93344855b38110e65f924651 [2019-09-20 13:31:48,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:48,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:48,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:48,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:48,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:48,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2476905b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48, skipping insertion in model container [2019-09-20 13:31:48,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,113 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:48,172 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:48,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:48,654 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:48,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:48,815 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:48,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48 WrapperNode [2019-09-20 13:31:48,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:48,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:48,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:48,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:48,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:48,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:48,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:48,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:48,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (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 [2019-09-20 13:31:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:50,140 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:50,141 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:50,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:50 BoogieIcfgContainer [2019-09-20 13:31:50,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:50,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:50,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:50,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:50,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:48" (1/3) ... [2019-09-20 13:31:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f50af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:50, skipping insertion in model container [2019-09-20 13:31:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (2/3) ... [2019-09-20 13:31:50,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f50af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:50, skipping insertion in model container [2019-09-20 13:31:50,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:50" (3/3) ... [2019-09-20 13:31:50,156 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2019-09-20 13:31:50,166 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:50,178 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:50,196 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:50,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:50,231 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:50,231 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:50,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:50,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:50,232 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:50,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:50,232 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2019-09-20 13:31:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:50,274 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:50,275 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] [2019-09-20 13:31:50,278 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:50,284 INFO L82 PathProgramCache]: Analyzing trace with hash -304783320, now seen corresponding path program 1 times [2019-09-20 13:31:50,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:50,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:50,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,345 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:50,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:50,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:50,714 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:50,720 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:50,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:50,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:50,738 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2019-09-20 13:31:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:50,771 INFO L93 Difference]: Finished difference Result 184 states and 217 transitions. [2019-09-20 13:31:50,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:50,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:50,790 INFO L225 Difference]: With dead ends: 184 [2019-09-20 13:31:50,790 INFO L226 Difference]: Without dead ends: 173 [2019-09-20 13:31:50,792 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 [2019-09-20 13:31:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-09-20 13:31:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2019-09-20 13:31:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-09-20 13:31:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 205 transitions. [2019-09-20 13:31:50,858 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 205 transitions. Word has length 59 [2019-09-20 13:31:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:50,859 INFO L475 AbstractCegarLoop]: Abstraction has 173 states and 205 transitions. [2019-09-20 13:31:50,859 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 205 transitions. [2019-09-20 13:31:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:50,864 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:50,864 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] [2019-09-20 13:31:50,864 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:50,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:50,865 INFO L82 PathProgramCache]: Analyzing trace with hash -511503066, now seen corresponding path program 1 times [2019-09-20 13:31:50,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:50,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:50,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,868 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:51,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:51,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:51,002 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:51,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:51,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:51,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:51,006 INFO L87 Difference]: Start difference. First operand 173 states and 205 transitions. Second operand 3 states. [2019-09-20 13:31:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:51,043 INFO L93 Difference]: Finished difference Result 164 states and 193 transitions. [2019-09-20 13:31:51,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:51,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:51,052 INFO L225 Difference]: With dead ends: 164 [2019-09-20 13:31:51,053 INFO L226 Difference]: Without dead ends: 164 [2019-09-20 13:31:51,055 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 [2019-09-20 13:31:51,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-09-20 13:31:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2019-09-20 13:31:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-09-20 13:31:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2019-09-20 13:31:51,092 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 60 [2019-09-20 13:31:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:51,093 INFO L475 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2019-09-20 13:31:51,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2019-09-20 13:31:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:51,100 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:51,100 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] [2019-09-20 13:31:51,100 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:51,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1192401668, now seen corresponding path program 1 times [2019-09-20 13:31:51,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:51,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:51,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:51,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:51,106 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:51,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:51,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:51,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:51,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:51,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:51,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:51,306 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 7 states. [2019-09-20 13:31:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:52,154 INFO L93 Difference]: Finished difference Result 356 states and 430 transitions. [2019-09-20 13:31:52,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:52,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:52,158 INFO L225 Difference]: With dead ends: 356 [2019-09-20 13:31:52,159 INFO L226 Difference]: Without dead ends: 356 [2019-09-20 13:31:52,159 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 [2019-09-20 13:31:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-09-20 13:31:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 344. [2019-09-20 13:31:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-09-20 13:31:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 418 transitions. [2019-09-20 13:31:52,196 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 418 transitions. Word has length 65 [2019-09-20 13:31:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:52,196 INFO L475 AbstractCegarLoop]: Abstraction has 344 states and 418 transitions. [2019-09-20 13:31:52,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 418 transitions. [2019-09-20 13:31:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:52,199 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:52,200 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] [2019-09-20 13:31:52,200 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:52,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1231670033, now seen corresponding path program 1 times [2019-09-20 13:31:52,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:52,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:52,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:52,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:52,204 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:52,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:52,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:52,379 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:52,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:52,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:52,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:52,380 INFO L87 Difference]: Start difference. First operand 344 states and 418 transitions. Second operand 7 states. [2019-09-20 13:31:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,257 INFO L93 Difference]: Finished difference Result 564 states and 698 transitions. [2019-09-20 13:31:53,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:53,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,262 INFO L225 Difference]: With dead ends: 564 [2019-09-20 13:31:53,262 INFO L226 Difference]: Without dead ends: 564 [2019-09-20 13:31:53,263 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-09-20 13:31:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 510. [2019-09-20 13:31:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-09-20 13:31:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2019-09-20 13:31:53,301 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 70 [2019-09-20 13:31:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,302 INFO L475 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2019-09-20 13:31:53,302 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2019-09-20 13:31:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:31:53,305 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,305 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:53,305 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash 853087743, now seen corresponding path program 1 times [2019-09-20 13:31:53,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,311 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:53,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:53,400 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:53,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:53,402 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand 6 states. [2019-09-20 13:31:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,437 INFO L93 Difference]: Finished difference Result 524 states and 625 transitions. [2019-09-20 13:31:53,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:53,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2019-09-20 13:31:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,441 INFO L225 Difference]: With dead ends: 524 [2019-09-20 13:31:53,442 INFO L226 Difference]: Without dead ends: 524 [2019-09-20 13:31:53,442 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 [2019-09-20 13:31:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-09-20 13:31:53,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 520. [2019-09-20 13:31:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-09-20 13:31:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2019-09-20 13:31:53,469 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 113 [2019-09-20 13:31:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,470 INFO L475 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2019-09-20 13:31:53,470 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2019-09-20 13:31:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:31:53,473 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,473 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:53,473 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1502717507, now seen corresponding path program 1 times [2019-09-20 13:31:53,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:53,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:53,570 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:53,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:53,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:53,571 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 8 states. [2019-09-20 13:31:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,604 INFO L93 Difference]: Finished difference Result 534 states and 633 transitions. [2019-09-20 13:31:53,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:53,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2019-09-20 13:31:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,608 INFO L225 Difference]: With dead ends: 534 [2019-09-20 13:31:53,608 INFO L226 Difference]: Without dead ends: 534 [2019-09-20 13:31:53,608 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 [2019-09-20 13:31:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-09-20 13:31:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 528. [2019-09-20 13:31:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2019-09-20 13:31:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 627 transitions. [2019-09-20 13:31:53,631 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 627 transitions. Word has length 113 [2019-09-20 13:31:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,631 INFO L475 AbstractCegarLoop]: Abstraction has 528 states and 627 transitions. [2019-09-20 13:31:53,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 627 transitions. [2019-09-20 13:31:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:31:53,634 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,634 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:53,635 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash -733547492, now seen corresponding path program 1 times [2019-09-20 13:31:53,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,640 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:53,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:53,740 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,741 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:53,741 INFO L87 Difference]: Start difference. First operand 528 states and 627 transitions. Second operand 4 states. [2019-09-20 13:31:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:54,067 INFO L93 Difference]: Finished difference Result 1146 states and 1417 transitions. [2019-09-20 13:31:54,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:54,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-09-20 13:31:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:54,074 INFO L225 Difference]: With dead ends: 1146 [2019-09-20 13:31:54,075 INFO L226 Difference]: Without dead ends: 1146 [2019-09-20 13:31:54,075 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 [2019-09-20 13:31:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2019-09-20 13:31:54,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1129. [2019-09-20 13:31:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2019-09-20 13:31:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1380 transitions. [2019-09-20 13:31:54,129 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1380 transitions. Word has length 113 [2019-09-20 13:31:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:54,129 INFO L475 AbstractCegarLoop]: Abstraction has 1129 states and 1380 transitions. [2019-09-20 13:31:54,129 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1380 transitions. [2019-09-20 13:31:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-20 13:31:54,133 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:54,134 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:54,134 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:54,135 INFO L82 PathProgramCache]: Analyzing trace with hash 216342370, now seen corresponding path program 1 times [2019-09-20 13:31:54,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:54,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:54,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:54,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:54,138 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:54,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:54,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:54,304 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:54,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:54,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:54,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:54,306 INFO L87 Difference]: Start difference. First operand 1129 states and 1380 transitions. Second operand 9 states. [2019-09-20 13:31:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:55,676 INFO L93 Difference]: Finished difference Result 2179 states and 2661 transitions. [2019-09-20 13:31:55,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:55,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-09-20 13:31:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:55,690 INFO L225 Difference]: With dead ends: 2179 [2019-09-20 13:31:55,690 INFO L226 Difference]: Without dead ends: 2179 [2019-09-20 13:31:55,691 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 [2019-09-20 13:31:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2019-09-20 13:31:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1940. [2019-09-20 13:31:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2019-09-20 13:31:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2331 transitions. [2019-09-20 13:31:55,773 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2331 transitions. Word has length 117 [2019-09-20 13:31:55,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:55,774 INFO L475 AbstractCegarLoop]: Abstraction has 1940 states and 2331 transitions. [2019-09-20 13:31:55,774 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2331 transitions. [2019-09-20 13:31:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-20 13:31:55,778 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:55,779 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:55,779 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1963590153, now seen corresponding path program 1 times [2019-09-20 13:31:55,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:55,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:55,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:55,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:55,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-20 13:31:55,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:55,961 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:55,963 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2019-09-20 13:31:55,966 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], [200], [201], [211], [213], [218], [221], [222], [223], [224], [226], [231], [233], [234], [238], [241], [245], [251], [278], [279], [282], [286], [289], [292], [294], [297], [304], [307], [310], [314], [315], [318], [319], [320], [322], [323], [324], [326], [329], [331], [334], [337], [346], [348], [349], [352], [354], [360], [364], [367], [368], [369], [393], [395], [396], [463], [464], [474], [482], [483], [484], [485], [486], [487], [488], [489], [490], [524], [525], [526], [527], [530], [531], [532], [533], [534], [535], [542], [543], [546], [547], [548], [549], [550], [551], [552], [553], [554], [555], [556], [557], [558], [559], [564], [565], [566], [567], [570], [571], [572], [573], [574], [575], [576], [577], [578], [580], [581], [584], [585], [586], [587], [590], [591], [592], [594], [595], [600], [601], [602] [2019-09-20 13:31:56,011 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:56,011 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:56,067 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:56,069 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 70 root evaluator evaluations with a maximum evaluation depth of 0. Performed 70 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:56,073 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:56,130 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:56,130 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:56,136 INFO L420 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2019-09-20 13:31:56,136 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:56,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:56,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:56,138 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:56,138 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:56,139 INFO L87 Difference]: Start difference. First operand 1940 states and 2331 transitions. Second operand 2 states. [2019-09-20 13:31:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:56,139 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:56,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:56,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-09-20 13:31:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:56,140 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:56,140 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:56,140 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:56,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 195 [2019-09-20 13:31:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:56,142 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:56,142 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:56,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:56,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:56 BoogieIcfgContainer [2019-09-20 13:31:56,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:56,153 INFO L168 Benchmark]: Toolchain (without parser) took 8058.27 ms. Allocated memory was 138.9 MB in the beginning and 326.1 MB in the end (delta: 187.2 MB). Free memory was 85.2 MB in the beginning and 112.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 159.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:56,154 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:56,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.97 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.0 MB in the beginning and 162.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:56,156 INFO L168 Benchmark]: Boogie Preprocessor took 91.51 ms. Allocated memory is still 199.2 MB. Free memory was 162.7 MB in the beginning and 158.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:56,157 INFO L168 Benchmark]: RCFGBuilder took 1235.29 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 158.3 MB in the beginning and 184.4 MB in the end (delta: -26.1 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:56,158 INFO L168 Benchmark]: TraceAbstraction took 6003.99 ms. Allocated memory was 222.3 MB in the beginning and 326.1 MB in the end (delta: 103.8 MB). Free memory was 184.4 MB in the beginning and 112.5 MB in the end (delta: 71.9 MB). Peak memory consumption was 175.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:56,162 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 138.9 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.97 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.0 MB in the beginning and 162.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.51 ms. Allocated memory is still 199.2 MB. Free memory was 162.7 MB in the beginning and 158.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1235.29 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 158.3 MB in the beginning and 184.4 MB in the end (delta: -26.1 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6003.99 ms. Allocated memory was 222.3 MB in the beginning and 326.1 MB in the end (delta: 103.8 MB). Free memory was 184.4 MB in the beginning and 112.5 MB in the end (delta: 71.9 MB). Peak memory consumption was 175.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 648]: 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 46 procedures, 272 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1817 SDtfs, 1498 SDslu, 4017 SDs, 0 SdLazy, 2049 SolverSat, 489 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1940occurred 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, 0.788659793814433 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 332 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 905 NumberOfCodeBlocks, 905 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 896 ConstructedInterpolants, 0 QuantifiedInterpolants, 163986 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 70/79 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...