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_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:19:30,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:19:30,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:19:30,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:19:30,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:19:30,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:19:30,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:19:30,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:19:30,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:19:30,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:19:30,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:19:30,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:19:30,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:19:30,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:19:30,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:19:30,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:19:30,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:19:30,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:19:30,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:19:30,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:19:30,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:19:30,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:19:30,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:19:30,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:19:30,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:19:30,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:19:30,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:19:30,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:19:30,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:19:30,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:19:30,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:19:30,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:19:30,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:19:30,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:19:30,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:19:30,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:19:30,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:19:30,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:19:30,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:19:30,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:19:30,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:19:30,112 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 15:19:30,126 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:19:30,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:19:30,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:19:30,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:19:30,127 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:19:30,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:19:30,128 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:19:30,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:19:30,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:19:30,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:19:30,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:19:30,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:19:30,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:19:30,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:19:30,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:19:30,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:19:30,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:19:30,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:19:30,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:19:30,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:19:30,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:19:30,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:30,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:19:30,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:19:30,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:19:30,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:19:30,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:19:30,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:19:30,132 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 15:19:30,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:19:30,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:19:30,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:19:30,444 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:19:30,444 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:19:30,445 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-10-07 15:19:30,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c9f583a7/9c23c31f933943ee9662707d344f7c6f/FLAG9221a26f7 [2019-10-07 15:19:31,134 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:19:31,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-10-07 15:19:31,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c9f583a7/9c23c31f933943ee9662707d344f7c6f/FLAG9221a26f7 [2019-10-07 15:19:31,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c9f583a7/9c23c31f933943ee9662707d344f7c6f [2019-10-07 15:19:31,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:19:31,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:19:31,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:31,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:19:31,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:19:31,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:31" (1/1) ... [2019-10-07 15:19:31,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c07f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:31, skipping insertion in model container [2019-10-07 15:19:31,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:31" (1/1) ... [2019-10-07 15:19:31,470 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:19:31,533 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:19:31,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:32,015 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:19:32,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:32,148 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:19:32,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32 WrapperNode [2019-10-07 15:19:32,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:32,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:19:32,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:19:32,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:19:32,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (1/1) ... [2019-10-07 15:19:32,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:19:32,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:19:32,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:19:32,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:19:32,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (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 15:19:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:19:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:19:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:19:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:19:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:19:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:19:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-07 15:19:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:19:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-07 15:19:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:19:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:19:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:19:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:19:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:19:32,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:19:32,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:19:32,333 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-07 15:19:32,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:32,333 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:19:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:19:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:19:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:19:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:19:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:19:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:19:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:19:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:19:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:19:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:19:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:19:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:19:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:19:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:19:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:19:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:19:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:19:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:19:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:19:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:19:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:19:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:19:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:19:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:19:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:19:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-07 15:19:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:19:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:19:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:19:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:19:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:19:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:19:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:19:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:19:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:19:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:19:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:19:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:19:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-07 15:19:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:19:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-07 15:19:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:19:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:19:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:19:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:19:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:19:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:19:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:19:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:19:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:19:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:19:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:19:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:19:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:19:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:19:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:19:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:19:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:19:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:19:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:19:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:19:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:19:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:19:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:19:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:19:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:19:33,935 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:19:33,935 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:19:33,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:33 BoogieIcfgContainer [2019-10-07 15:19:33,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:19:33,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:19:33,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:19:33,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:19:33,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:19:31" (1/3) ... [2019-10-07 15:19:33,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21292dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:33, skipping insertion in model container [2019-10-07 15:19:33,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:32" (2/3) ... [2019-10-07 15:19:33,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21292dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:33, skipping insertion in model container [2019-10-07 15:19:33,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:33" (3/3) ... [2019-10-07 15:19:33,945 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2019-10-07 15:19:33,954 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:19:33,964 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:19:33,975 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:19:34,009 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:19:34,009 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:19:34,009 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:19:34,009 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:19:34,009 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:19:34,010 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:19:34,010 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:19:34,010 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:19:34,032 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2019-10-07 15:19:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 15:19:34,041 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:34,042 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 15:19:34,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:34,051 INFO L82 PathProgramCache]: Analyzing trace with hash -181766063, now seen corresponding path program 1 times [2019-10-07 15:19:34,059 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:34,060 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,060 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,060 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:34,421 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 15:19:34,422 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,422 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:34,423 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:19:34,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:19:34,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:19:34,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:34,441 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 2 states. [2019-10-07 15:19:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:34,482 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2019-10-07 15:19:34,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:19:34,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-07 15:19:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:34,496 INFO L225 Difference]: With dead ends: 265 [2019-10-07 15:19:34,497 INFO L226 Difference]: Without dead ends: 133 [2019-10-07 15:19:34,501 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 15:19:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-10-07 15:19:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2019-10-07 15:19:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-07 15:19:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2019-10-07 15:19:34,555 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 42 [2019-10-07 15:19:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:34,555 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2019-10-07 15:19:34,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:19:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2019-10-07 15:19:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 15:19:34,560 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:34,560 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 15:19:34,560 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash -579616042, now seen corresponding path program 1 times [2019-10-07 15:19:34,561 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:34,561 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,561 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,562 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:34,728 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 15:19:34,728 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,728 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:34,729 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:19:34,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:34,731 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand 3 states. [2019-10-07 15:19:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:34,770 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2019-10-07 15:19:34,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:34,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-07 15:19:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:34,778 INFO L225 Difference]: With dead ends: 219 [2019-10-07 15:19:34,778 INFO L226 Difference]: Without dead ends: 125 [2019-10-07 15:19:34,781 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 15:19:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-07 15:19:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-07 15:19:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-07 15:19:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2019-10-07 15:19:34,798 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 43 [2019-10-07 15:19:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:34,799 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2019-10-07 15:19:34,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2019-10-07 15:19:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-07 15:19:34,801 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:34,802 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 15:19:34,802 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:34,802 INFO L82 PathProgramCache]: Analyzing trace with hash -741704379, now seen corresponding path program 1 times [2019-10-07 15:19:34,803 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:34,803 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,803 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,803 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:35,038 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 15:19:35,039 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:35,039 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:35,039 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:19:35,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:35,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:35,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:19:35,041 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand 7 states. [2019-10-07 15:19:35,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:35,468 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2019-10-07 15:19:35,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 15:19:35,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-07 15:19:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:35,471 INFO L225 Difference]: With dead ends: 228 [2019-10-07 15:19:35,472 INFO L226 Difference]: Without dead ends: 125 [2019-10-07 15:19:35,476 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-07 15:19:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-07 15:19:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-07 15:19:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2019-10-07 15:19:35,502 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 46 [2019-10-07 15:19:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:35,502 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2019-10-07 15:19:35,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2019-10-07 15:19:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-07 15:19:35,510 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:35,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:35,511 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1156525635, now seen corresponding path program 1 times [2019-10-07 15:19:35,511 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:35,511 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:35,511 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:35,512 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:35,679 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:35,679 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:35,679 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 15:19:35,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 15:19:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 15:19:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:19:35,682 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 5 states. [2019-10-07 15:19:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:36,207 INFO L93 Difference]: Finished difference Result 332 states and 391 transitions. [2019-10-07 15:19:36,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:19:36,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2019-10-07 15:19:36,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:36,213 INFO L225 Difference]: With dead ends: 332 [2019-10-07 15:19:36,213 INFO L226 Difference]: Without dead ends: 229 [2019-10-07 15:19:36,215 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-10-07 15:19:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2019-10-07 15:19:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-10-07 15:19:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 232 transitions. [2019-10-07 15:19:36,243 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 232 transitions. Word has length 63 [2019-10-07 15:19:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:36,244 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 232 transitions. [2019-10-07 15:19:36,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 15:19:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 232 transitions. [2019-10-07 15:19:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-07 15:19:36,246 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:36,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:36,246 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1819528347, now seen corresponding path program 1 times [2019-10-07 15:19:36,247 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:36,247 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:36,247 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:36,247 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:36,361 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 15:19:36,361 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:36,362 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:36,362 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 15:19:36,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 15:19:36,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 15:19:36,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:36,363 INFO L87 Difference]: Start difference. First operand 212 states and 232 transitions. Second operand 10 states. [2019-10-07 15:19:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:36,820 INFO L93 Difference]: Finished difference Result 630 states and 717 transitions. [2019-10-07 15:19:36,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:19:36,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2019-10-07 15:19:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:36,826 INFO L225 Difference]: With dead ends: 630 [2019-10-07 15:19:36,827 INFO L226 Difference]: Without dead ends: 440 [2019-10-07 15:19:36,828 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 15:19:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-10-07 15:19:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 426. [2019-10-07 15:19:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-07 15:19:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 472 transitions. [2019-10-07 15:19:36,883 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 472 transitions. Word has length 73 [2019-10-07 15:19:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:36,884 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 472 transitions. [2019-10-07 15:19:36,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 15:19:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 472 transitions. [2019-10-07 15:19:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-07 15:19:36,892 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:36,892 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:36,892 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:36,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1345221674, now seen corresponding path program 1 times [2019-10-07 15:19:36,893 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:36,893 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:36,893 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:36,893 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 15:19:37,272 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:37,272 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:37,273 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 15:19:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:37,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-07 15:19:37,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 15:19:37,649 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 15:19:38,190 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:19:38,190 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [15] total 27 [2019-10-07 15:19:38,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:38,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-07 15:19:38,192 INFO L87 Difference]: Start difference. First operand 426 states and 472 transitions. Second operand 14 states. [2019-10-07 15:19:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:39,227 INFO L93 Difference]: Finished difference Result 1019 states and 1134 transitions. [2019-10-07 15:19:39,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 15:19:39,228 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2019-10-07 15:19:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:39,234 INFO L225 Difference]: With dead ends: 1019 [2019-10-07 15:19:39,234 INFO L226 Difference]: Without dead ends: 829 [2019-10-07 15:19:39,236 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-07 15:19:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-10-07 15:19:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 826. [2019-10-07 15:19:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2019-10-07 15:19:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 917 transitions. [2019-10-07 15:19:39,311 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 917 transitions. Word has length 130 [2019-10-07 15:19:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:39,312 INFO L462 AbstractCegarLoop]: Abstraction has 826 states and 917 transitions. [2019-10-07 15:19:39,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 917 transitions. [2019-10-07 15:19:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 15:19:39,321 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:39,322 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:39,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:39,528 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2111747162, now seen corresponding path program 1 times [2019-10-07 15:19:39,529 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:39,529 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:39,530 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:39,530 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 15:19:39,670 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:39,670 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:39,670 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 15:19:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:39,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 15:19:39,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:39,978 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 15:19:40,285 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:40,286 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-07 15:19:40,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:40,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:40,287 INFO L87 Difference]: Start difference. First operand 826 states and 917 transitions. Second operand 3 states. [2019-10-07 15:19:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:40,394 INFO L93 Difference]: Finished difference Result 1633 states and 1814 transitions. [2019-10-07 15:19:40,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:40,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-07 15:19:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:40,404 INFO L225 Difference]: With dead ends: 1633 [2019-10-07 15:19:40,405 INFO L226 Difference]: Without dead ends: 829 [2019-10-07 15:19:40,407 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-10-07 15:19:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 760. [2019-10-07 15:19:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2019-10-07 15:19:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 813 transitions. [2019-10-07 15:19:40,461 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 813 transitions. Word has length 140 [2019-10-07 15:19:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:40,464 INFO L462 AbstractCegarLoop]: Abstraction has 760 states and 813 transitions. [2019-10-07 15:19:40,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 813 transitions. [2019-10-07 15:19:40,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 15:19:40,471 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:40,471 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:40,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:40,684 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash -574104665, now seen corresponding path program 1 times [2019-10-07 15:19:40,685 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:40,685 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:40,685 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:40,685 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 15:19:40,828 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:40,829 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:41,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 15:19:41,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 15:19:41,066 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:19:41,281 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:19:41,282 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-07 15:19:41,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:41,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:41,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:19:41,283 INFO L87 Difference]: Start difference. First operand 760 states and 813 transitions. Second operand 7 states. [2019-10-07 15:19:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:41,557 INFO L93 Difference]: Finished difference Result 775 states and 829 transitions. [2019-10-07 15:19:41,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:19:41,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-10-07 15:19:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:41,563 INFO L225 Difference]: With dead ends: 775 [2019-10-07 15:19:41,563 INFO L226 Difference]: Without dead ends: 772 [2019-10-07 15:19:41,564 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 271 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 15:19:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2019-10-07 15:19:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 760. [2019-10-07 15:19:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2019-10-07 15:19:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 811 transitions. [2019-10-07 15:19:41,606 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 811 transitions. Word has length 127 [2019-10-07 15:19:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:41,607 INFO L462 AbstractCegarLoop]: Abstraction has 760 states and 811 transitions. [2019-10-07 15:19:41,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 811 transitions. [2019-10-07 15:19:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 15:19:41,610 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:41,611 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:41,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:41,817 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:41,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1546399480, now seen corresponding path program 2 times [2019-10-07 15:19:41,818 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:41,818 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:41,818 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:41,818 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 15:19:42,079 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:42,079 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:42,079 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 15:19:42,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:42,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 15:19:42,081 INFO L87 Difference]: Start difference. First operand 760 states and 811 transitions. Second operand 14 states. [2019-10-07 15:19:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:42,533 INFO L93 Difference]: Finished difference Result 1392 states and 1552 transitions. [2019-10-07 15:19:42,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 15:19:42,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-10-07 15:19:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:42,543 INFO L225 Difference]: With dead ends: 1392 [2019-10-07 15:19:42,543 INFO L226 Difference]: Without dead ends: 1016 [2019-10-07 15:19:42,545 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-07 15:19:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2019-10-07 15:19:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 858. [2019-10-07 15:19:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2019-10-07 15:19:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 929 transitions. [2019-10-07 15:19:42,613 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 929 transitions. Word has length 140 [2019-10-07 15:19:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:42,614 INFO L462 AbstractCegarLoop]: Abstraction has 858 states and 929 transitions. [2019-10-07 15:19:42,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 929 transitions. [2019-10-07 15:19:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-07 15:19:42,619 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:42,620 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:42,620 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:42,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:42,621 INFO L82 PathProgramCache]: Analyzing trace with hash 725871869, now seen corresponding path program 1 times [2019-10-07 15:19:42,621 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:42,621 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:42,621 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:42,622 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:19:42,941 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:42,941 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:43,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-07 15:19:43,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:43,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:43,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:43,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:43,618 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:44,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:45,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:45,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:45,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:19:45,611 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:45,611 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 13] total 36 [2019-10-07 15:19:45,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2019-10-07 15:19:45,613 INFO L87 Difference]: Start difference. First operand 858 states and 929 transitions. Second operand 14 states. [2019-10-07 15:19:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:48,078 INFO L93 Difference]: Finished difference Result 1988 states and 2290 transitions. [2019-10-07 15:19:48,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 15:19:48,079 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 146 [2019-10-07 15:19:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:48,086 INFO L225 Difference]: With dead ends: 1988 [2019-10-07 15:19:48,087 INFO L226 Difference]: Without dead ends: 1152 [2019-10-07 15:19:48,092 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 269 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=398, Invalid=2572, Unknown=0, NotChecked=0, Total=2970 [2019-10-07 15:19:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2019-10-07 15:19:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1046. [2019-10-07 15:19:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-07 15:19:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1159 transitions. [2019-10-07 15:19:48,160 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1159 transitions. Word has length 146 [2019-10-07 15:19:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:48,161 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1159 transitions. [2019-10-07 15:19:48,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1159 transitions. [2019-10-07 15:19:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 15:19:48,165 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:48,166 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:48,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:48,371 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2003549317, now seen corresponding path program 1 times [2019-10-07 15:19:48,372 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:48,373 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:48,373 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:48,373 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 15:19:48,582 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:48,582 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:48,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-07 15:19:48,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:49,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:49,175 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:49,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 15:19:49,992 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:19:50,023 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-07 15:19:50,024 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:19:50,031 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:19:50,038 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:19:50,039 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:19:57,694 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-07 15:19:59,368 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:19:59,485 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:59,600 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:59,713 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:59,968 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:00,239 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:00,445 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:00,650 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:00,816 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:00,946 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:01,132 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:01,245 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:01,360 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:01,491 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:01,497 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-07 15:20:01,768 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-07 15:20:01,769 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-10-07 15:20:01,916 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:02,025 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:02,150 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,362 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:02,507 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,625 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:02,757 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:02,878 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,150 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 542 [2019-10-07 15:20:03,382 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:03,593 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,743 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:03,853 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:03,974 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,306 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,539 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:04,681 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,994 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,304 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,423 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:05,525 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:05,642 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,952 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,159 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:06,285 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,414 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:06,629 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,754 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,863 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,980 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,188 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:07,316 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,435 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,542 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,651 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,767 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,909 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,020 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,143 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,386 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:08,497 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,756 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:09,038 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:09,148 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:09,269 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:09,384 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:09,496 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:09,730 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:09,910 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,023 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,149 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,287 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,400 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,523 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,861 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:10,996 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,349 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,491 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,619 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,740 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,960 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:12,068 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,195 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,390 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:12,498 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,641 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,750 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,858 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,974 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,195 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:13,305 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,438 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,641 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:13,766 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,929 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:14,039 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:14,149 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:14,266 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:14,521 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 558 [2019-10-07 15:20:14,628 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:14,750 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:14,945 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 560 [2019-10-07 15:20:15,053 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:15,181 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:15,387 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:15,494 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:15,611 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:15,813 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:15,921 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,042 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,149 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,256 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,370 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,613 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:16,721 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,839 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,034 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:17,140 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,280 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,387 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,500 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,613 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,818 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:17,928 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,047 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,246 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:18,354 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,515 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,624 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,732 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,849 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:19,037 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:19,144 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:19,275 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:19,473 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 560 [2019-10-07 15:20:19,583 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:19,704 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:19,905 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:20,011 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,127 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,319 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:20,427 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,544 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,651 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,759 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,883 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:21,092 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:21,204 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:21,328 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:21,527 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:21,635 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:21,754 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:21,949 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:22,059 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:22,191 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:22,390 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-07 15:20:22,503 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:22,627 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:22,816 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:20:22,926 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:23,047 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:23,267 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:23,378 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:23,501 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:23,708 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:23,821 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:23,944 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:24,149 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:24,257 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:24,373 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:24,625 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:24,731 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:24,849 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:24,958 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:25,065 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:25,192 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:25,572 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:25,748 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:25,903 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:26,109 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:26,218 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:26,336 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:26,530 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:26,638 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:26,757 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:26,957 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-07 15:20:27,066 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:27,186 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:27,388 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:27,494 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:27,611 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:27,805 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:27,911 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:28,027 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:28,132 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:28,239 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:28,355 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:28,573 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:20:28,681 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:28,799 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:28,996 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:29,102 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:29,222 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:29,424 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:29,530 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:29,646 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:29,839 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:29,946 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:30,062 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:30,065 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-10-07 15:20:30,270 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:30,385 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:30,390 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-10-07 15:20:30,698 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:30,914 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:31,032 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:31,155 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:31,376 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:31,581 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 551 [2019-10-07 15:20:31,704 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:32,031 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 569 [2019-10-07 15:20:32,181 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:32,447 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:32,782 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 573 [2019-10-07 15:20:32,992 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 557 [2019-10-07 15:20:33,289 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:33,666 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:33,802 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:34,066 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:34,404 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:34,507 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:34,772 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:35,110 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:35,212 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:35,476 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:35,807 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:35,910 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:36,176 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:36,513 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:36,619 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:36,888 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:37,217 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:37,319 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:37,587 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:37,916 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:38,027 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:38,298 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:38,626 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:38,729 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:38,993 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:39,323 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:39,425 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:39,700 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:40,032 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:40,134 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:40,400 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:40,730 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:40,833 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:41,100 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:41,451 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:41,813 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:42,244 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:42,653 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:43,058 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:43,493 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:43,892 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:44,298 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:44,707 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:45,107 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:45,504 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:45,902 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:46,303 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:46,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:46,668 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: assume true; 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: assume true; 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.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 15:20:46,675 INFO L168 Benchmark]: Toolchain (without parser) took 75227.89 ms. Allocated memory was 136.8 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 101.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:46,675 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 15:20:46,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.15 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 165.8 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:46,676 INFO L168 Benchmark]: Boogie Preprocessor took 118.44 ms. Allocated memory is still 199.8 MB. Free memory was 164.8 MB in the beginning and 160.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:46,676 INFO L168 Benchmark]: RCFGBuilder took 1663.72 ms. Allocated memory was 199.8 MB in the beginning and 230.7 MB in the end (delta: 30.9 MB). Free memory was 160.7 MB in the beginning and 140.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:46,677 INFO L168 Benchmark]: TraceAbstraction took 72735.01 ms. Allocated memory was 230.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 138.6 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:46,678 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.15 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 165.8 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.44 ms. Allocated memory is still 199.8 MB. Free memory was 164.8 MB in the beginning and 160.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1663.72 ms. Allocated memory was 199.8 MB in the beginning and 230.7 MB in the end (delta: 30.9 MB). Free memory was 160.7 MB in the beginning and 140.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 72735.01 ms. Allocated memory was 230.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 138.6 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 40.9 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: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: 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...