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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:20:16,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:20:16,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:20:16,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:20:16,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:20:16,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:20:16,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:20:16,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:20:16,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:20:16,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:20:16,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:20:16,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:20:16,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:20:16,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:20:16,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:20:16,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:20:16,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:20:16,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:20:16,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:20:16,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:20:16,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:20:16,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:20:16,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:20:16,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:20:16,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:20:16,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:20:16,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:20:16,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:20:16,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:20:16,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:20:16,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:20:16,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:20:16,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:20:16,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:20:16,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:20:16,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:20:16,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:20:16,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:20:16,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:20:16,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:20:16,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:20:16,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 15:20:16,083 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:20:16,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:20:16,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:20:16,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:20:16,085 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:20:16,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:20:16,086 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:20:16,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:20:16,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:20:16,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:20:16,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:20:16,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:20:16,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:20:16,087 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:20:16,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:20:16,087 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:20:16,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:20:16,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:20:16,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:20:16,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:20:16,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:20:16,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:20:16,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:20:16,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:20:16,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:20:16,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:20:16,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:20:16,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:20:16,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 15:20:16,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:20:16,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:20:16,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:20:16,368 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:20:16,369 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:20:16,369 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-07 15:20:16,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cac53adb8/7c08ab8ea41b4adf9f2b8cc735c757ed/FLAGaf9119c0c [2019-10-07 15:20:16,949 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:20:16,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-07 15:20:16,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cac53adb8/7c08ab8ea41b4adf9f2b8cc735c757ed/FLAGaf9119c0c [2019-10-07 15:20:17,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cac53adb8/7c08ab8ea41b4adf9f2b8cc735c757ed [2019-10-07 15:20:17,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:20:17,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:20:17,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:20:17,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:20:17,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:20:17,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:17,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17, skipping insertion in model container [2019-10-07 15:20:17,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:17,281 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:20:17,348 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:20:17,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:20:17,768 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:20:17,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:20:17,931 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:20:17,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17 WrapperNode [2019-10-07 15:20:17,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:20:17,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:20:17,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:20:17,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:20:17,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:17,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:17,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:17,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:18,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:18,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:18,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (1/1) ... [2019-10-07 15:20:18,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:20:18,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:20:18,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:20:18,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:20:18,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (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 [2019-10-07 15:20:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:20:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:20:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:20:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:20:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:20:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:20:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:20:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:20:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:20:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:20:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:20:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:20:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:20:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:20:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:20:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:20:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:20:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:20:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:20:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:20:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:20:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:20:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:20:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:20:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:20:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:20:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:20:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:20:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:20:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:20:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:20:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-07 15:20:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:20:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-07 15:20:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:20:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-07 15:20:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:20:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:20:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:20:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:20:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:20:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:20:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:20:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:20:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:20:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:20:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:20:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:20:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:20:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:20:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:20:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:20:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:20:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:20:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:20:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:20:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:20:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:20:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:20:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:20:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:20:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:20:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:20:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:20:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-07 15:20:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:20:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-07 15:20:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:20:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:20:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:20:19,672 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:20:19,673 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:20:19,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:20:19 BoogieIcfgContainer [2019-10-07 15:20:19,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:20:19,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:20:19,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:20:19,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:20:19,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:17" (1/3) ... [2019-10-07 15:20:19,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461c313a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:20:19, skipping insertion in model container [2019-10-07 15:20:19,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:17" (2/3) ... [2019-10-07 15:20:19,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461c313a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:20:19, skipping insertion in model container [2019-10-07 15:20:19,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:20:19" (3/3) ... [2019-10-07 15:20:19,683 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2019-10-07 15:20:19,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:20:19,705 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:20:19,719 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:20:19,750 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:20:19,750 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:20:19,751 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:20:19,751 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:20:19,752 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:20:19,752 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:20:19,752 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:20:19,753 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:20:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2019-10-07 15:20:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 15:20:19,784 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:19,785 INFO L385 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] [2019-10-07 15:20:19,787 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:19,793 INFO L82 PathProgramCache]: Analyzing trace with hash -627710674, now seen corresponding path program 1 times [2019-10-07 15:20:19,802 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:19,802 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:19,803 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:19,803 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:20:20,183 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:20,184 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:20,184 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:20:20,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:20:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:20:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:20:20,218 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 2 states. [2019-10-07 15:20:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:20,310 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2019-10-07 15:20:20,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:20:20,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-07 15:20:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:20,331 INFO L225 Difference]: With dead ends: 271 [2019-10-07 15:20:20,332 INFO L226 Difference]: Without dead ends: 136 [2019-10-07 15:20:20,344 INFO L606 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 [2019-10-07 15:20:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-10-07 15:20:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-10-07 15:20:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-07 15:20:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2019-10-07 15:20:20,417 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 42 [2019-10-07 15:20:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:20,417 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2019-10-07 15:20:20,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:20:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2019-10-07 15:20:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 15:20:20,421 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:20,421 INFO L385 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] [2019-10-07 15:20:20,422 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash 577917647, now seen corresponding path program 1 times [2019-10-07 15:20:20,423 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:20,423 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:20,423 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:20,423 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:20:20,531 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:20,532 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:20,533 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:20:20,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:20:20,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:20:20,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:20:20,536 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand 3 states. [2019-10-07 15:20:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:20,584 INFO L93 Difference]: Finished difference Result 222 states and 260 transitions. [2019-10-07 15:20:20,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:20:20,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-07 15:20:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:20,590 INFO L225 Difference]: With dead ends: 222 [2019-10-07 15:20:20,590 INFO L226 Difference]: Without dead ends: 128 [2019-10-07 15:20:20,594 INFO L606 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 [2019-10-07 15:20:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-07 15:20:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-07 15:20:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-07 15:20:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-10-07 15:20:20,627 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 43 [2019-10-07 15:20:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:20,627 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-10-07 15:20:20,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:20:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-10-07 15:20:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-07 15:20:20,630 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:20,631 INFO L385 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] [2019-10-07 15:20:20,631 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1796130562, now seen corresponding path program 1 times [2019-10-07 15:20:20,632 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:20,632 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:20,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:20,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:20:20,794 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:20,794 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:20,794 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:20:20,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:20:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:20:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:20:20,796 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 7 states. [2019-10-07 15:20:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:21,308 INFO L93 Difference]: Finished difference Result 384 states and 460 transitions. [2019-10-07 15:20:21,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:20:21,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-07 15:20:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:21,318 INFO L225 Difference]: With dead ends: 384 [2019-10-07 15:20:21,318 INFO L226 Difference]: Without dead ends: 278 [2019-10-07 15:20:21,322 INFO L606 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 [2019-10-07 15:20:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-07 15:20:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2019-10-07 15:20:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2019-10-07 15:20:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2019-10-07 15:20:21,388 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 46 [2019-10-07 15:20:21,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:21,388 INFO L462 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2019-10-07 15:20:21,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:20:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2019-10-07 15:20:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-07 15:20:21,396 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:21,397 INFO L385 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] [2019-10-07 15:20:21,397 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash -851174668, now seen corresponding path program 1 times [2019-10-07 15:20:21,398 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:21,398 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:21,398 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:21,398 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:20:21,590 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:21,590 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:21,590 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 15:20:21,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 15:20:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 15:20:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:20:21,592 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand 10 states. [2019-10-07 15:20:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:22,211 INFO L93 Difference]: Finished difference Result 975 states and 1214 transitions. [2019-10-07 15:20:22,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:20:22,211 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-10-07 15:20:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:22,217 INFO L225 Difference]: With dead ends: 975 [2019-10-07 15:20:22,217 INFO L226 Difference]: Without dead ends: 727 [2019-10-07 15:20:22,219 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:20:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-10-07 15:20:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 703. [2019-10-07 15:20:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-10-07 15:20:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 860 transitions. [2019-10-07 15:20:22,273 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 860 transitions. Word has length 51 [2019-10-07 15:20:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:22,274 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 860 transitions. [2019-10-07 15:20:22,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 15:20:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 860 transitions. [2019-10-07 15:20:22,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-07 15:20:22,277 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:22,277 INFO L385 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] [2019-10-07 15:20:22,277 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:22,277 INFO L82 PathProgramCache]: Analyzing trace with hash 367047727, now seen corresponding path program 1 times [2019-10-07 15:20:22,278 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:22,278 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:22,278 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:22,278 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:20:22,372 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:22,373 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:22,373 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 15:20:22,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 15:20:22,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 15:20:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 15:20:22,374 INFO L87 Difference]: Start difference. First operand 703 states and 860 transitions. Second operand 4 states. [2019-10-07 15:20:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:22,751 INFO L93 Difference]: Finished difference Result 1708 states and 2242 transitions. [2019-10-07 15:20:22,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 15:20:22,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-10-07 15:20:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:22,759 INFO L225 Difference]: With dead ends: 1708 [2019-10-07 15:20:22,759 INFO L226 Difference]: Without dead ends: 1027 [2019-10-07 15:20:22,762 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:20:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-07 15:20:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 897. [2019-10-07 15:20:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-10-07 15:20:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1060 transitions. [2019-10-07 15:20:22,829 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1060 transitions. Word has length 54 [2019-10-07 15:20:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:22,830 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1060 transitions. [2019-10-07 15:20:22,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 15:20:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1060 transitions. [2019-10-07 15:20:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-07 15:20:22,832 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:22,833 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:20:22,833 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:22,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1521884808, now seen corresponding path program 1 times [2019-10-07 15:20:22,834 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:22,834 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:22,834 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:22,834 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:20:22,929 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:22,929 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:20:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:23,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 15:20:23,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:20:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 15:20:23,182 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:20:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:20:23,303 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:20:23,304 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-07 15:20:23,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:20:23,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:20:23,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:20:23,306 INFO L87 Difference]: Start difference. First operand 897 states and 1060 transitions. Second operand 7 states. [2019-10-07 15:20:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:23,542 INFO L93 Difference]: Finished difference Result 910 states and 1076 transitions. [2019-10-07 15:20:23,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:20:23,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-07 15:20:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:23,549 INFO L225 Difference]: With dead ends: 910 [2019-10-07 15:20:23,549 INFO L226 Difference]: Without dead ends: 907 [2019-10-07 15:20:23,550 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 15:20:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2019-10-07 15:20:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 897. [2019-10-07 15:20:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-10-07 15:20:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1057 transitions. [2019-10-07 15:20:23,666 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1057 transitions. Word has length 78 [2019-10-07 15:20:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:23,668 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1057 transitions. [2019-10-07 15:20:23,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:20:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1057 transitions. [2019-10-07 15:20:23,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 15:20:23,673 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:23,673 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:20:23,878 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:23,879 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:23,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2004119821, now seen corresponding path program 1 times [2019-10-07 15:20:23,881 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:23,881 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:23,881 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:23,881 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 15:20:23,980 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:23,980 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:23,980 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:20:23,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:20:23,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:20:23,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:20:23,982 INFO L87 Difference]: Start difference. First operand 897 states and 1057 transitions. Second operand 3 states. [2019-10-07 15:20:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:24,044 INFO L93 Difference]: Finished difference Result 1023 states and 1210 transitions. [2019-10-07 15:20:24,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:20:24,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-07 15:20:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:24,048 INFO L225 Difference]: With dead ends: 1023 [2019-10-07 15:20:24,048 INFO L226 Difference]: Without dead ends: 401 [2019-10-07 15:20:24,050 INFO L606 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 [2019-10-07 15:20:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-10-07 15:20:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2019-10-07 15:20:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2019-10-07 15:20:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 458 transitions. [2019-10-07 15:20:24,072 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 458 transitions. Word has length 118 [2019-10-07 15:20:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:24,072 INFO L462 AbstractCegarLoop]: Abstraction has 401 states and 458 transitions. [2019-10-07 15:20:24,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:20:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 458 transitions. [2019-10-07 15:20:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 15:20:24,075 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:24,075 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 15:20:24,075 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:24,076 INFO L82 PathProgramCache]: Analyzing trace with hash 228019860, now seen corresponding path program 1 times [2019-10-07 15:20:24,076 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:24,076 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:24,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:24,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 15:20:24,200 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:24,200 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:20:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:24,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 15:20:24,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:20:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 15:20:24,585 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:20:24,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:20:24,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:20:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 15:20:25,037 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:20:25,065 INFO L162 IcfgInterpreter]: Started Sifa with 101 locations of interest [2019-10-07 15:20:25,065 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:20:25,072 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:20:25,079 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:20:25,080 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:20:32,428 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-07 15:20:34,084 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:20:34,214 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:20:34,350 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:20:34,472 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:20:34,742 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:35,015 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:35,234 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:35,441 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:35,799 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-07 15:20:35,925 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:36,061 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:36,222 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:36,332 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:36,450 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:36,459 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-07 15:20:36,722 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-07 15:20:36,723 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-07 15:20:36,875 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:37,117 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:37,233 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:37,344 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:37,523 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:37,649 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:37,873 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:38,088 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-07 15:20:38,191 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:38,330 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:38,452 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:38,662 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:38,769 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:38,899 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:39,068 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:39,173 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:39,384 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:39,595 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:39,713 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:39,917 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:40,032 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:40,355 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:40,469 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:40,690 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:41,000 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:41,207 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:41,331 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:41,489 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:41,595 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:41,711 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:41,940 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:42,048 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:42,207 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:42,314 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:42,421 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:42,534 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:42,673 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:42,780 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:42,900 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,018 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,126 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,331 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,438 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,546 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,662 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:43,772 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:43,879 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:43,995 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:44,102 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:44,218 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:44,372 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:44,501 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:44,607 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:44,733 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:44,994 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 560 [2019-10-07 15:20:45,100 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:45,354 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:45,549 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:45,660 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:45,778 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:45,983 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:46,088 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:46,204 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:46,400 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:46,514 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:46,639 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:46,748 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:46,869 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:46,981 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:47,111 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,219 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,340 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,465 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,572 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,696 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,803 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:47,910 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:48,027 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:48,230 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-07 15:20:48,338 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:48,494 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:48,678 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:20:48,786 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:48,916 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:49,116 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:49,233 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:49,358 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:49,563 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:49,668 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:49,784 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:49,888 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:49,991 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:50,104 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:50,302 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:50,406 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:50,533 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:50,735 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:50,839 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:50,954 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:51,058 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:51,161 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:51,273 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:51,392 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:51,498 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:51,629 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:51,762 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:51,875 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:51,993 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:52,099 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:52,207 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:52,321 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:52,504 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:52,609 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:52,727 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:52,927 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:53,036 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:53,150 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:53,455 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:53,559 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:53,672 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:53,775 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:53,880 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:53,992 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:54,153 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:54,259 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:54,376 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:54,582 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:54,686 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:54,802 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:55,233 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:55,356 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:55,474 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:55,660 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:55,764 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:55,878 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:56,077 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:56,181 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:56,296 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:56,487 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:56,592 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:56,721 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:56,825 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:56,928 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:57,042 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:57,159 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:57,267 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:57,393 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:57,589 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:57,694 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:57,811 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:57,996 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:58,100 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:58,216 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:58,409 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-07 15:20:58,515 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:58,634 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:58,818 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:20:58,925 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:59,169 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:59,457 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:59,562 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:59,677 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:59,863 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:59,967 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:00,080 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:00,190 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:00,294 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:00,405 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:00,521 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:00,627 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:00,745 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:00,854 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:00,960 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:01,077 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:01,182 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:01,289 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:01,403 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:01,586 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-07 15:21:01,692 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:01,813 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:02,003 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:21:02,110 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:02,228 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:02,423 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:21:02,531 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:02,649 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:02,841 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:21:02,951 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:03,074 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:03,077 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-10-07 15:21:03,380 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:03,384 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 544 for LOIs [2019-10-07 15:21:03,486 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:03,692 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:21:04,007 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:04,314 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:04,466 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-07 15:21:04,730 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-07 15:21:05,072 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:21:05,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:21:05,352 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:21:05,365 INFO L168 Benchmark]: Toolchain (without parser) took 48097.33 ms. Allocated memory was 137.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 100.8 MB in the beginning and 556.3 MB in the end (delta: -455.5 MB). Peak memory consumption was 685.8 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:05,366 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 15:21:05,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.22 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 166.0 MB in the end (delta: -65.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:05,369 INFO L168 Benchmark]: Boogie Preprocessor took 113.07 ms. Allocated memory is still 200.8 MB. Free memory was 166.0 MB in the beginning and 161.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:05,369 INFO L168 Benchmark]: RCFGBuilder took 1629.35 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 161.8 MB in the beginning and 138.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:05,370 INFO L168 Benchmark]: TraceAbstraction took 45684.02 ms. Allocated memory was 231.7 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 138.2 MB in the beginning and 556.3 MB in the end (delta: -418.0 MB). Peak memory consumption was 629.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:05,373 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.22 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 166.0 MB in the end (delta: -65.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.07 ms. Allocated memory is still 200.8 MB. Free memory was 166.0 MB in the beginning and 161.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1629.35 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 161.8 MB in the beginning and 138.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45684.02 ms. Allocated memory was 231.7 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 138.2 MB in the beginning and 556.3 MB in the end (delta: -418.0 MB). Peak memory consumption was 629.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...