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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:41,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:41,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:41,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:41,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:41,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:41,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:42,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:42,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:42,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:42,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:42,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:42,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:42,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:42,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:42,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:42,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:42,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:42,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:42,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:42,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:42,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:42,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:42,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:42,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:42,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:42,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:42,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:42,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:42,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:42,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:42,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:42,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:42,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:42,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:42,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:42,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:42,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:42,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:42,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:42,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:42,066 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 13:31:42,080 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:42,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:42,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:42,081 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:42,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:42,082 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:42,082 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:42,082 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:42,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:42,083 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:42,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:42,084 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:42,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:42,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:42,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:42,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:42,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:42,085 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:42,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:42,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:42,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:42,086 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:42,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:42,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:42,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:42,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:42,087 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:42,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:42,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:42,087 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:42,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:42,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:42,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:42,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:42,138 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:42,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-09-20 13:31:42,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baaebcc93/464c70c85e0f41708c142a9b98449a42/FLAGf490e2b83 [2019-09-20 13:31:42,768 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:42,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-09-20 13:31:42,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baaebcc93/464c70c85e0f41708c142a9b98449a42/FLAGf490e2b83 [2019-09-20 13:31:43,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baaebcc93/464c70c85e0f41708c142a9b98449a42 [2019-09-20 13:31:43,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:43,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:43,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:43,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:43,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:43,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d70ec0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43, skipping insertion in model container [2019-09-20 13:31:43,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,064 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:43,133 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:43,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:43,666 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:43,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:43,837 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:43,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43 WrapperNode [2019-09-20 13:31:43,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:43,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:43,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:43,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:43,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (1/1) ... [2019-09-20 13:31:43,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:43,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:43,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:43,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:43,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (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 13:31:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:45,212 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:45,212 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:45,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:45 BoogieIcfgContainer [2019-09-20 13:31:45,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:45,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:45,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:45,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:45,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:43" (1/3) ... [2019-09-20 13:31:45,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614b79fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:45, skipping insertion in model container [2019-09-20 13:31:45,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:43" (2/3) ... [2019-09-20 13:31:45,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614b79fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:45, skipping insertion in model container [2019-09-20 13:31:45,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:45" (3/3) ... [2019-09-20 13:31:45,226 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2019-09-20 13:31:45,239 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:45,253 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:45,275 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:45,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:45,309 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:45,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:45,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:45,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:45,312 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:45,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:45,312 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-09-20 13:31:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:45,360 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,362 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 13:31:45,365 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2019-09-20 13:31:45,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,823 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 13:31:45,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:45,835 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,841 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:45,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:45,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:45,861 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 2 states. [2019-09-20 13:31:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,898 INFO L93 Difference]: Finished difference Result 174 states and 202 transitions. [2019-09-20 13:31:45,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:45,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,915 INFO L225 Difference]: With dead ends: 174 [2019-09-20 13:31:45,915 INFO L226 Difference]: Without dead ends: 163 [2019-09-20 13:31:45,918 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 13:31:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-09-20 13:31:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2019-09-20 13:31:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-09-20 13:31:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2019-09-20 13:31:45,987 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2019-09-20 13:31:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,987 INFO L475 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2019-09-20 13:31:45,988 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2019-09-20 13:31:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:45,992 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,992 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 13:31:45,993 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2019-09-20 13:31:45,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:46,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:46,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,000 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:46,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:46,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:46,158 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:46,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:46,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:46,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:46,161 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 3 states. [2019-09-20 13:31:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:46,179 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2019-09-20 13:31:46,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:46,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:46,186 INFO L225 Difference]: With dead ends: 154 [2019-09-20 13:31:46,189 INFO L226 Difference]: Without dead ends: 154 [2019-09-20 13:31:46,191 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 13:31:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-20 13:31:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-09-20 13:31:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-09-20 13:31:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2019-09-20 13:31:46,223 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2019-09-20 13:31:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:46,224 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2019-09-20 13:31:46,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2019-09-20 13:31:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:46,231 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:46,231 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 13:31:46,231 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2019-09-20 13:31:46,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:46,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:46,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,239 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:46,406 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 13:31:46,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:46,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:46,407 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:46,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:46,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:46,409 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 7 states. [2019-09-20 13:31:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,080 INFO L93 Difference]: Finished difference Result 336 states and 400 transitions. [2019-09-20 13:31:47,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:47,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,085 INFO L225 Difference]: With dead ends: 336 [2019-09-20 13:31:47,085 INFO L226 Difference]: Without dead ends: 336 [2019-09-20 13:31:47,085 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 13:31:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-09-20 13:31:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 324. [2019-09-20 13:31:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-09-20 13:31:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2019-09-20 13:31:47,117 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2019-09-20 13:31:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,118 INFO L475 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2019-09-20 13:31:47,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2019-09-20 13:31:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:47,121 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,121 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 13:31:47,121 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2019-09-20 13:31:47,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,126 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,294 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 13:31:47,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:47,295 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,296 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:47,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:47,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:47,298 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 7 states. [2019-09-20 13:31:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:48,139 INFO L93 Difference]: Finished difference Result 512 states and 636 transitions. [2019-09-20 13:31:48,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:48,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:48,146 INFO L225 Difference]: With dead ends: 512 [2019-09-20 13:31:48,146 INFO L226 Difference]: Without dead ends: 512 [2019-09-20 13:31:48,147 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 13:31:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2019-09-20 13:31:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 458. [2019-09-20 13:31:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-09-20 13:31:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 547 transitions. [2019-09-20 13:31:48,193 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 547 transitions. Word has length 70 [2019-09-20 13:31:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:48,219 INFO L475 AbstractCegarLoop]: Abstraction has 458 states and 547 transitions. [2019-09-20 13:31:48,219 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 547 transitions. [2019-09-20 13:31:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:31:48,226 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:48,226 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:48,226 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:48,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:48,227 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2019-09-20 13:31:48,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:48,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:48,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,232 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:48,356 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 13:31:48,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:48,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:48,357 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:48,358 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:48,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:48,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:48,360 INFO L87 Difference]: Start difference. First operand 458 states and 547 transitions. Second operand 6 states. [2019-09-20 13:31:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:48,407 INFO L93 Difference]: Finished difference Result 472 states and 563 transitions. [2019-09-20 13:31:48,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:48,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-20 13:31:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:48,413 INFO L225 Difference]: With dead ends: 472 [2019-09-20 13:31:48,413 INFO L226 Difference]: Without dead ends: 472 [2019-09-20 13:31:48,414 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 13:31:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-09-20 13:31:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 468. [2019-09-20 13:31:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-20 13:31:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2019-09-20 13:31:48,448 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2019-09-20 13:31:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:48,449 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2019-09-20 13:31:48,449 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2019-09-20 13:31:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:31:48,451 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:48,451 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:48,452 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:48,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2019-09-20 13:31:48,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:48,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:48,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,455 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:48,552 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 13:31:48,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:48,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:48,553 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:48,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:48,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:48,554 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 8 states. [2019-09-20 13:31:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:48,587 INFO L93 Difference]: Finished difference Result 482 states and 571 transitions. [2019-09-20 13:31:48,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:48,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-20 13:31:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:48,593 INFO L225 Difference]: With dead ends: 482 [2019-09-20 13:31:48,594 INFO L226 Difference]: Without dead ends: 482 [2019-09-20 13:31:48,595 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 13:31:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-09-20 13:31:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 476. [2019-09-20 13:31:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-09-20 13:31:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2019-09-20 13:31:48,619 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2019-09-20 13:31:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:48,623 INFO L475 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2019-09-20 13:31:48,623 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2019-09-20 13:31:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:31:48,628 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:48,629 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:48,629 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:48,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:48,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2019-09-20 13:31:48,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:48,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:48,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,632 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:48,755 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 13:31:48,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:48,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:48,756 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:48,757 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:48,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:48,758 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 4 states. [2019-09-20 13:31:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:49,041 INFO L93 Difference]: Finished difference Result 1036 states and 1281 transitions. [2019-09-20 13:31:49,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:49,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-20 13:31:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:49,078 INFO L225 Difference]: With dead ends: 1036 [2019-09-20 13:31:49,078 INFO L226 Difference]: Without dead ends: 1036 [2019-09-20 13:31:49,079 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 13:31:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-09-20 13:31:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1019. [2019-09-20 13:31:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2019-09-20 13:31:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1244 transitions. [2019-09-20 13:31:49,137 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1244 transitions. Word has length 108 [2019-09-20 13:31:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:49,138 INFO L475 AbstractCegarLoop]: Abstraction has 1019 states and 1244 transitions. [2019-09-20 13:31:49,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1244 transitions. [2019-09-20 13:31:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:31:49,142 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:49,142 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:49,143 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2019-09-20 13:31:49,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:49,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:49,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,150 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:49,356 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 13:31:49,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:49,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:49,357 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:49,357 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:49,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:49,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:49,358 INFO L87 Difference]: Start difference. First operand 1019 states and 1244 transitions. Second operand 9 states. [2019-09-20 13:31:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:50,752 INFO L93 Difference]: Finished difference Result 1997 states and 2439 transitions. [2019-09-20 13:31:50,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:50,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-20 13:31:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:50,765 INFO L225 Difference]: With dead ends: 1997 [2019-09-20 13:31:50,765 INFO L226 Difference]: Without dead ends: 1997 [2019-09-20 13:31:50,766 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2019-09-20 13:31:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1764. [2019-09-20 13:31:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2019-09-20 13:31:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2119 transitions. [2019-09-20 13:31:50,890 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2119 transitions. Word has length 112 [2019-09-20 13:31:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:50,893 INFO L475 AbstractCegarLoop]: Abstraction has 1764 states and 2119 transitions. [2019-09-20 13:31:50,893 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2119 transitions. [2019-09-20 13:31:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-20 13:31:50,900 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:50,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:50,902 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2019-09-20 13:31:50,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:50,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:50,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,906 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:31:51,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:51,099 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:51,102 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2019-09-20 13:31:51,104 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], [224], [229], [231], [232], [233], [234], [235], [236], [240], [243], [247], [253], [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], [350], [374], [376], [377], [444], [445], [455], [463], [464], [465], [466], [467], [468], [469], [470], [471], [505], [506], [507], [508], [511], [512], [513], [514], [515], [516], [523], [524], [527], [528], [529], [530], [531], [532], [533], [534], [535], [536], [537], [538], [539], [540], [545], [546], [547], [548], [551], [552], [553], [554], [555], [556], [557], [558], [559], [563], [564], [565], [567], [568], [573], [574], [575] [2019-09-20 13:31:51,172 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:51,172 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:51,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:51,275 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. [2019-09-20 13:31:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:51,279 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:51,345 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:51,345 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:51,351 INFO L420 sIntCurrentIteration]: We unified 173 AI predicates to 173 [2019-09-20 13:31:51,352 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:51,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:51,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:51,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:51,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:51,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:51,354 INFO L87 Difference]: Start difference. First operand 1764 states and 2119 transitions. Second operand 2 states. [2019-09-20 13:31:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:51,355 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:51,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:51,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 174 [2019-09-20 13:31:51,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:51,358 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:51,358 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:51,358 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 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 13:31:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:51,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2019-09-20 13:31:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:51,359 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:51,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:51,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:51,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:51 BoogieIcfgContainer [2019-09-20 13:31:51,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:51,368 INFO L168 Benchmark]: Toolchain (without parser) took 8320.23 ms. Allocated memory was 132.6 MB in the beginning and 331.9 MB in the end (delta: 199.2 MB). Free memory was 85.7 MB in the beginning and 184.9 MB in the end (delta: -99.2 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:51,369 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory is still 105.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:51,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.07 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 85.7 MB in the beginning and 161.3 MB in the end (delta: -75.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:51,370 INFO L168 Benchmark]: Boogie Preprocessor took 110.83 ms. Allocated memory is still 199.2 MB. Free memory was 161.3 MB in the beginning and 157.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:51,371 INFO L168 Benchmark]: RCFGBuilder took 1262.40 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 157.7 MB in the beginning and 183.8 MB in the end (delta: -26.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:51,372 INFO L168 Benchmark]: TraceAbstraction took 6149.57 ms. Allocated memory was 223.3 MB in the beginning and 331.9 MB in the end (delta: 108.5 MB). Free memory was 183.8 MB in the beginning and 184.9 MB in the end (delta: -1.0 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:51,376 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory is still 105.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 791.07 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 85.7 MB in the beginning and 161.3 MB in the end (delta: -75.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.83 ms. Allocated memory is still 199.2 MB. Free memory was 161.3 MB in the beginning and 157.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1262.40 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 157.7 MB in the beginning and 183.8 MB in the end (delta: -26.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6149.57 ms. Allocated memory was 223.3 MB in the beginning and 331.9 MB in the end (delta: 108.5 MB). Free memory was 183.8 MB in the beginning and 184.9 MB in the end (delta: -1.0 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 923]: 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 45 procedures, 262 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1666 SDtfs, 1289 SDslu, 3692 SDs, 0 SdLazy, 1872 SolverSat, 394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1764occurred 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, 0.8265895953757225 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 326 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 864 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 855 ConstructedInterpolants, 0 QuantifiedInterpolants, 146939 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...