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_spec1_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:47,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:48,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:48,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:48,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:48,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:48,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:48,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:48,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:48,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:48,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:48,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:48,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:48,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:48,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:48,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:48,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:48,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:48,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:48,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:48,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:48,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:48,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:48,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:48,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:48,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:48,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:48,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:48,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:48,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:48,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:48,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:48,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:48,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:48,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:48,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:48,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:48,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:48,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:48,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:48,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:48,062 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 13:29:48,084 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:48,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:48,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:48,085 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:48,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:48,086 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:48,086 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:48,087 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:48,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:48,087 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:48,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:48,090 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:48,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:48,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:48,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:48,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:48,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:48,091 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:48,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:48,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:48,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:48,092 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:48,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:48,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:48,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:48,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:48,093 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:48,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:48,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:48,094 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:48,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:48,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:48,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:48,174 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:48,174 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:48,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-09-20 13:29:48,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26204894/8c88d81e57eb40209ab1aba67e87da15/FLAGf29347036 [2019-09-20 13:29:48,766 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:48,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-09-20 13:29:48,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26204894/8c88d81e57eb40209ab1aba67e87da15/FLAGf29347036 [2019-09-20 13:29:49,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26204894/8c88d81e57eb40209ab1aba67e87da15 [2019-09-20 13:29:49,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:49,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:49,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:49,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:49,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:49,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af82b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49, skipping insertion in model container [2019-09-20 13:29:49,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,153 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:49,216 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:49,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:49,722 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:49,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:49,871 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:49,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49 WrapperNode [2019-09-20 13:29:49,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:49,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:49,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:49,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:49,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (1/1) ... [2019-09-20 13:29:49,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:49,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:49,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:49,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:49,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (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 13:29:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:29:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:29:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:29:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:29:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:29:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:29:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:29:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:29:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:29:50,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:29:50,081 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:29:50,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:29:50,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:29:50,082 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:29:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:29:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:29:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:29:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:29:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:29:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:29:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:29:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:29:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:29:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-20 13:29:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:29:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:29:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:29:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:29:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:29:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:29:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:29:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:29:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:29:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:29:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:29:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:29:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:29:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:29:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:29:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:29:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:29:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:29:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:29:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:29:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:29:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:29:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:29:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:29:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:29:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:29:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:29:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:29:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:29:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:29:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:29:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:29:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:29:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:29:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:29:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:29:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:29:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:29:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:29:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:29:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:51,311 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:51,311 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:29:51,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:51 BoogieIcfgContainer [2019-09-20 13:29:51,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:51,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:51,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:51,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:51,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:49" (1/3) ... [2019-09-20 13:29:51,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455f452d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:51, skipping insertion in model container [2019-09-20 13:29:51,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:49" (2/3) ... [2019-09-20 13:29:51,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455f452d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:51, skipping insertion in model container [2019-09-20 13:29:51,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:51" (3/3) ... [2019-09-20 13:29:51,323 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product63.cil.c [2019-09-20 13:29:51,333 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:51,346 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:51,363 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:51,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:51,399 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:51,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:51,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:51,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:51,400 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:51,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:51,400 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-09-20 13:29:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:29:51,433 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:51,434 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:51,437 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1613581470, now seen corresponding path program 1 times [2019-09-20 13:29:51,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:51,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:51,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:51,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:51,504 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:51,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:51,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:51,827 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:51,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:51,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:51,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:51,864 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 2 states. [2019-09-20 13:29:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:51,895 INFO L93 Difference]: Finished difference Result 167 states and 199 transitions. [2019-09-20 13:29:51,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:51,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:29:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:51,910 INFO L225 Difference]: With dead ends: 167 [2019-09-20 13:29:51,911 INFO L226 Difference]: Without dead ends: 156 [2019-09-20 13:29:51,912 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 13:29:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-09-20 13:29:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-09-20 13:29:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-09-20 13:29:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2019-09-20 13:29:51,972 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 46 [2019-09-20 13:29:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:51,973 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2019-09-20 13:29:51,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2019-09-20 13:29:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:29:51,977 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:51,977 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:51,978 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:51,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:51,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1476283687, now seen corresponding path program 1 times [2019-09-20 13:29:51,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:51,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:51,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:51,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:51,981 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:52,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:52,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:52,132 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:52,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:52,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:52,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:52,136 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand 3 states. [2019-09-20 13:29:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:52,171 INFO L93 Difference]: Finished difference Result 147 states and 175 transitions. [2019-09-20 13:29:52,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:52,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-20 13:29:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:52,179 INFO L225 Difference]: With dead ends: 147 [2019-09-20 13:29:52,179 INFO L226 Difference]: Without dead ends: 147 [2019-09-20 13:29:52,180 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 13:29:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-20 13:29:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-20 13:29:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-20 13:29:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2019-09-20 13:29:52,210 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 47 [2019-09-20 13:29:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:52,210 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2019-09-20 13:29:52,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2019-09-20 13:29:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:29:52,213 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:52,213 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:52,214 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash 474549322, now seen corresponding path program 1 times [2019-09-20 13:29:52,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:52,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:52,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:52,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:52,218 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:52,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:52,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:29:52,394 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:52,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:29:52,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:29:52,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:52,395 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand 7 states. [2019-09-20 13:29:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:52,958 INFO L93 Difference]: Finished difference Result 320 states and 388 transitions. [2019-09-20 13:29:52,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:52,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-09-20 13:29:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:52,964 INFO L225 Difference]: With dead ends: 320 [2019-09-20 13:29:52,964 INFO L226 Difference]: Without dead ends: 320 [2019-09-20 13:29:52,965 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 13:29:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-09-20 13:29:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 312. [2019-09-20 13:29:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2019-09-20 13:29:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 382 transitions. [2019-09-20 13:29:53,039 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 382 transitions. Word has length 51 [2019-09-20 13:29:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:53,039 INFO L475 AbstractCegarLoop]: Abstraction has 312 states and 382 transitions. [2019-09-20 13:29:53,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:29:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 382 transitions. [2019-09-20 13:29:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:29:53,046 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:53,047 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:53,047 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash 912243430, now seen corresponding path program 1 times [2019-09-20 13:29:53,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:53,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:53,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:53,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:53,054 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:53,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:53,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:53,243 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:53,245 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:53,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:53,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:53,246 INFO L87 Difference]: Start difference. First operand 312 states and 382 transitions. Second operand 6 states. [2019-09-20 13:29:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:53,492 INFO L93 Difference]: Finished difference Result 585 states and 720 transitions. [2019-09-20 13:29:53,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:53,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-20 13:29:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:53,498 INFO L225 Difference]: With dead ends: 585 [2019-09-20 13:29:53,498 INFO L226 Difference]: Without dead ends: 585 [2019-09-20 13:29:53,498 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:29:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-09-20 13:29:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 579. [2019-09-20 13:29:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-20 13:29:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 714 transitions. [2019-09-20 13:29:53,547 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 714 transitions. Word has length 57 [2019-09-20 13:29:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:53,548 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 714 transitions. [2019-09-20 13:29:53,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 714 transitions. [2019-09-20 13:29:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-20 13:29:53,557 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:53,557 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:53,558 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1983295510, now seen corresponding path program 1 times [2019-09-20 13:29:53,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:53,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:53,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:53,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:53,566 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:53,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:53,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:53,679 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:53,680 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:53,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:53,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:53,682 INFO L87 Difference]: Start difference. First operand 579 states and 714 transitions. Second operand 6 states. [2019-09-20 13:29:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:53,932 INFO L93 Difference]: Finished difference Result 809 states and 989 transitions. [2019-09-20 13:29:53,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:53,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-09-20 13:29:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:53,943 INFO L225 Difference]: With dead ends: 809 [2019-09-20 13:29:53,943 INFO L226 Difference]: Without dead ends: 809 [2019-09-20 13:29:53,944 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:29:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2019-09-20 13:29:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 791. [2019-09-20 13:29:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-09-20 13:29:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 967 transitions. [2019-09-20 13:29:54,001 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 967 transitions. Word has length 61 [2019-09-20 13:29:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:54,003 INFO L475 AbstractCegarLoop]: Abstraction has 791 states and 967 transitions. [2019-09-20 13:29:54,003 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 967 transitions. [2019-09-20 13:29:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:29:54,016 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:54,017 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] [2019-09-20 13:29:54,017 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash -575696431, now seen corresponding path program 1 times [2019-09-20 13:29:54,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:54,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:54,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:54,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:54,025 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:54,179 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 13:29:54,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:54,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:54,180 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:54,180 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:54,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:54,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:54,181 INFO L87 Difference]: Start difference. First operand 791 states and 967 transitions. Second operand 6 states. [2019-09-20 13:29:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:54,223 INFO L93 Difference]: Finished difference Result 819 states and 999 transitions. [2019-09-20 13:29:54,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:29:54,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-20 13:29:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:54,232 INFO L225 Difference]: With dead ends: 819 [2019-09-20 13:29:54,233 INFO L226 Difference]: Without dead ends: 819 [2019-09-20 13:29:54,233 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 13:29:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-09-20 13:29:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2019-09-20 13:29:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-09-20 13:29:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 987 transitions. [2019-09-20 13:29:54,279 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 987 transitions. Word has length 103 [2019-09-20 13:29:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:54,281 INFO L475 AbstractCegarLoop]: Abstraction has 811 states and 987 transitions. [2019-09-20 13:29:54,281 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 987 transitions. [2019-09-20 13:29:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:29:54,289 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:54,290 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] [2019-09-20 13:29:54,290 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:54,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:54,291 INFO L82 PathProgramCache]: Analyzing trace with hash -928784813, now seen corresponding path program 1 times [2019-09-20 13:29:54,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:54,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:54,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:54,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:54,295 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:54,437 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 13:29:54,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:54,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:29:54,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:54,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:29:54,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:29:54,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:54,439 INFO L87 Difference]: Start difference. First operand 811 states and 987 transitions. Second operand 8 states. [2019-09-20 13:29:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:54,480 INFO L93 Difference]: Finished difference Result 839 states and 1015 transitions. [2019-09-20 13:29:54,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:54,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-20 13:29:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:54,485 INFO L225 Difference]: With dead ends: 839 [2019-09-20 13:29:54,486 INFO L226 Difference]: Without dead ends: 839 [2019-09-20 13:29:54,486 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 13:29:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-20 13:29:54,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 827. [2019-09-20 13:29:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-09-20 13:29:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1003 transitions. [2019-09-20 13:29:54,522 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1003 transitions. Word has length 103 [2019-09-20 13:29:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:54,523 INFO L475 AbstractCegarLoop]: Abstraction has 827 states and 1003 transitions. [2019-09-20 13:29:54,523 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:29:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1003 transitions. [2019-09-20 13:29:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:29:54,529 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:54,529 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] [2019-09-20 13:29:54,530 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:54,530 INFO L82 PathProgramCache]: Analyzing trace with hash 204405780, now seen corresponding path program 1 times [2019-09-20 13:29:54,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:54,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:54,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:54,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:54,534 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:54,634 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 13:29:54,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:54,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:54,637 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:54,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:54,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:54,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:54,640 INFO L87 Difference]: Start difference. First operand 827 states and 1003 transitions. Second operand 4 states. [2019-09-20 13:29:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:54,906 INFO L93 Difference]: Finished difference Result 1858 states and 2335 transitions. [2019-09-20 13:29:54,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:54,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-20 13:29:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:54,917 INFO L225 Difference]: With dead ends: 1858 [2019-09-20 13:29:54,917 INFO L226 Difference]: Without dead ends: 1858 [2019-09-20 13:29:54,918 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 13:29:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2019-09-20 13:29:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1827. [2019-09-20 13:29:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2019-09-20 13:29:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2263 transitions. [2019-09-20 13:29:54,992 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2263 transitions. Word has length 103 [2019-09-20 13:29:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:54,992 INFO L475 AbstractCegarLoop]: Abstraction has 1827 states and 2263 transitions. [2019-09-20 13:29:54,992 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2263 transitions. [2019-09-20 13:29:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:29:54,997 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:54,997 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] [2019-09-20 13:29:54,997 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash -796699686, now seen corresponding path program 1 times [2019-09-20 13:29:54,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:55,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:55,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:55,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:55,001 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:29:55,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:55,153 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:55,154 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 108 with the following transitions: [2019-09-20 13:29:55,157 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [210], [212], [217], [220], [221], [223], [228], [230], [231], [234], [235], [241], [245], [285], [288], [290], [293], [303], [306], [310], [311], [314], [315], [330], [333], [334], [335], [358], [360], [361], [428], [429], [434], [436], [439], [443], [445], [448], [450], [453], [466], [467], [468], [469], [470], [471], [472], [473], [474], [516], [517], [518], [519], [520], [521], [524], [528], [529], [530], [531], [532], [533], [536], [537], [538], [544], [545], [546], [547], [558], [559], [562], [564], [565], [570], [571], [572], [574], [575], [576], [577], [578] [2019-09-20 13:29:55,208 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:55,209 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:55,293 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:55,295 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-20 13:29:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:55,299 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:55,348 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:29:55,348 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:55,352 INFO L420 sIntCurrentIteration]: We unified 106 AI predicates to 106 [2019-09-20 13:29:55,352 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:55,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:55,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:29:55,354 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:55,354 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:55,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:55,355 INFO L87 Difference]: Start difference. First operand 1827 states and 2263 transitions. Second operand 2 states. [2019-09-20 13:29:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:55,355 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:29:55,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:55,356 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 107 [2019-09-20 13:29:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:55,356 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:29:55,356 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:55,357 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 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 13:29:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:55,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2019-09-20 13:29:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:55,358 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:55,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:55,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:55,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:55 BoogieIcfgContainer [2019-09-20 13:29:55,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:55,392 INFO L168 Benchmark]: Toolchain (without parser) took 6255.08 ms. Allocated memory was 136.3 MB in the beginning and 369.6 MB in the end (delta: 233.3 MB). Free memory was 82.1 MB in the beginning and 329.2 MB in the end (delta: -247.1 MB). Peak memory consumption was 161.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:55,393 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:55,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.08 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 81.9 MB in the beginning and 160.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:55,395 INFO L168 Benchmark]: Boogie Preprocessor took 110.98 ms. Allocated memory is still 196.6 MB. Free memory was 160.5 MB in the beginning and 156.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:55,396 INFO L168 Benchmark]: RCFGBuilder took 1329.16 ms. Allocated memory was 196.6 MB in the beginning and 213.4 MB in the end (delta: 16.8 MB). Free memory was 156.5 MB in the beginning and 184.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 97.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:55,397 INFO L168 Benchmark]: TraceAbstraction took 4074.18 ms. Allocated memory was 213.4 MB in the beginning and 369.6 MB in the end (delta: 156.2 MB). Free memory was 182.7 MB in the beginning and 329.2 MB in the end (delta: -146.6 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:55,401 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.08 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 81.9 MB in the beginning and 160.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.98 ms. Allocated memory is still 196.6 MB. Free memory was 160.5 MB in the beginning and 156.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1329.16 ms. Allocated memory was 196.6 MB in the beginning and 213.4 MB in the end (delta: 16.8 MB). Free memory was 156.5 MB in the beginning and 184.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 97.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4074.18 ms. Allocated memory was 213.4 MB in the beginning and 369.6 MB in the end (delta: 156.2 MB). Free memory was 182.7 MB in the beginning and 329.2 MB in the end (delta: -146.6 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 381]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 258 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1630 SDtfs, 787 SDslu, 4078 SDs, 0 SdLazy, 632 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1827occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.028301886792453 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 83 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 678 NumberOfCodeBlocks, 678 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 669 ConstructedInterpolants, 0 QuantifiedInterpolants, 84399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...