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_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:22:06,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:22:06,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:22:06,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:22:06,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:22:06,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:22:06,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:22:06,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:22:06,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:22:06,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:22:06,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:22:06,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:22:06,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:22:06,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:22:06,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:22:06,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:22:06,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:22:06,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:22:06,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:22:06,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:22:06,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:22:06,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:22:06,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:22:06,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:22:06,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:22:06,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:22:06,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:22:06,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:22:06,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:22:06,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:22:06,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:22:06,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:22:06,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:22:06,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:22:06,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:22:06,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:22:06,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:22:06,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:22:06,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:22:06,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:22:06,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:22:06,327 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 15:22:06,350 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:22:06,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:22:06,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:22:06,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:22:06,355 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:22:06,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:22:06,355 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:22:06,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:22:06,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:22:06,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:22:06,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:22:06,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:22:06,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:22:06,358 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:22:06,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:22:06,358 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:22:06,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:22:06,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:22:06,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:22:06,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:22:06,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:22:06,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:22:06,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:22:06,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:22:06,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:22:06,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:22:06,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:22:06,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:22:06,362 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 15:22:06,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:22:06,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:22:06,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:22:06,700 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:22:06,700 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:22:06,701 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-10-07 15:22:06,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3d9f2af/069fe512a5cf4bf2b73012b16e6eaa63/FLAGc924159f1 [2019-10-07 15:22:07,347 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:22:07,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-10-07 15:22:07,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3d9f2af/069fe512a5cf4bf2b73012b16e6eaa63/FLAGc924159f1 [2019-10-07 15:22:07,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3d9f2af/069fe512a5cf4bf2b73012b16e6eaa63 [2019-10-07 15:22:07,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:22:07,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:22:07,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:22:07,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:22:07,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:22:07,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:22:07" (1/1) ... [2019-10-07 15:22:07,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4791f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:07, skipping insertion in model container [2019-10-07 15:22:07,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:22:07" (1/1) ... [2019-10-07 15:22:07,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:22:07,694 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:22:08,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:22:08,246 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:22:08,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:22:08,413 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:22:08,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08 WrapperNode [2019-10-07 15:22:08,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:22:08,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:22:08,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:22:08,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:22:08,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (1/1) ... [2019-10-07 15:22:08,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:22:08,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:22:08,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:22:08,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:22:08,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (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 15:22:08,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:22:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:22:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:22:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-07 15:22:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-07 15:22:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-07 15:22:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:22:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:22:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:22:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:22:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:22:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:22:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:22:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:22:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:22:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:22:08,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:22:08,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:22:08,562 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:22:08,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:22:08,565 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:22:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:22:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:22:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-07 15:22:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:22:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:22:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:22:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:22:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:22:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:22:08,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:22:08,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:22:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-07 15:22:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:22:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:22:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:22:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:22:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:22:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:22:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:22:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:22:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:22:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:22:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:22:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:22:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:22:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-07 15:22:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:22:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:22:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:22:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:22:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:22:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:22:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:22:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:22:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:22:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:22:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:22:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:22:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:22:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:22:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:22:10,216 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:22:10,216 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:22:10,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:22:10 BoogieIcfgContainer [2019-10-07 15:22:10,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:22:10,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:22:10,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:22:10,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:22:10,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:22:07" (1/3) ... [2019-10-07 15:22:10,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dccbd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:22:10, skipping insertion in model container [2019-10-07 15:22:10,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:08" (2/3) ... [2019-10-07 15:22:10,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dccbd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:22:10, skipping insertion in model container [2019-10-07 15:22:10,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:22:10" (3/3) ... [2019-10-07 15:22:10,228 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2019-10-07 15:22:10,241 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:22:10,251 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:22:10,264 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:22:10,295 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:22:10,296 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:22:10,296 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:22:10,296 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:22:10,296 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:22:10,296 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:22:10,297 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:22:10,297 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:22:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-07 15:22:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-07 15:22:10,330 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:10,331 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:22:10,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:10,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2004867032, now seen corresponding path program 1 times [2019-10-07 15:22:10,350 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:10,350 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:10,350 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:10,351 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:22:10,712 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:10,712 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:10,713 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:22:10,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:22:10,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:22:10,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:22:10,728 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-10-07 15:22:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:10,782 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2019-10-07 15:22:10,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:22:10,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-07 15:22:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:10,800 INFO L225 Difference]: With dead ends: 264 [2019-10-07 15:22:10,800 INFO L226 Difference]: Without dead ends: 134 [2019-10-07 15:22:10,807 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 15:22:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-07 15:22:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-10-07 15:22:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-07 15:22:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2019-10-07 15:22:10,866 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 52 [2019-10-07 15:22:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:10,866 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2019-10-07 15:22:10,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:22:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2019-10-07 15:22:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-07 15:22:10,871 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:10,871 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:22:10,872 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1132766157, now seen corresponding path program 1 times [2019-10-07 15:22:10,873 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:10,873 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:10,873 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:10,873 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:22:11,046 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:11,046 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:11,047 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:22:11,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:22:11,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:22:11,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:22:11,053 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 3 states. [2019-10-07 15:22:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:11,100 INFO L93 Difference]: Finished difference Result 218 states and 253 transitions. [2019-10-07 15:22:11,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:22:11,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-07 15:22:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:11,104 INFO L225 Difference]: With dead ends: 218 [2019-10-07 15:22:11,104 INFO L226 Difference]: Without dead ends: 126 [2019-10-07 15:22:11,106 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 15:22:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-07 15:22:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-07 15:22:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-07 15:22:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2019-10-07 15:22:11,123 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 53 [2019-10-07 15:22:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:11,124 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2019-10-07 15:22:11,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:22:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2019-10-07 15:22:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 15:22:11,127 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:11,127 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:22:11,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:11,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2144150323, now seen corresponding path program 1 times [2019-10-07 15:22:11,128 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:11,128 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:11,128 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:11,128 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:22:11,334 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:11,335 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:11,335 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:22:11,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:22:11,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:22:11,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:22:11,336 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 7 states. [2019-10-07 15:22:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:11,709 INFO L93 Difference]: Finished difference Result 227 states and 264 transitions. [2019-10-07 15:22:11,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 15:22:11,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-07 15:22:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:11,712 INFO L225 Difference]: With dead ends: 227 [2019-10-07 15:22:11,712 INFO L226 Difference]: Without dead ends: 126 [2019-10-07 15:22:11,713 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:22:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-07 15:22:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-07 15:22:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-07 15:22:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2019-10-07 15:22:11,730 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 56 [2019-10-07 15:22:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:11,732 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2019-10-07 15:22:11,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:22:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2019-10-07 15:22:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-07 15:22:11,741 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:11,741 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:22:11,742 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash -654841893, now seen corresponding path program 1 times [2019-10-07 15:22:11,744 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:11,745 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:11,745 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:11,745 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:22:11,926 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:11,927 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:11,927 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 15:22:11,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 15:22:11,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 15:22:11,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:22:11,928 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 5 states. [2019-10-07 15:22:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:12,450 INFO L93 Difference]: Finished difference Result 329 states and 392 transitions. [2019-10-07 15:22:12,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:22:12,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-10-07 15:22:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:12,454 INFO L225 Difference]: With dead ends: 329 [2019-10-07 15:22:12,454 INFO L226 Difference]: Without dead ends: 228 [2019-10-07 15:22:12,456 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 15:22:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-10-07 15:22:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2019-10-07 15:22:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-10-07 15:22:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 235 transitions. [2019-10-07 15:22:12,495 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 235 transitions. Word has length 73 [2019-10-07 15:22:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:12,495 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 235 transitions. [2019-10-07 15:22:12,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 15:22:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 235 transitions. [2019-10-07 15:22:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-07 15:22:12,497 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:12,498 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:22:12,498 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:12,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:12,498 INFO L82 PathProgramCache]: Analyzing trace with hash 133990115, now seen corresponding path program 1 times [2019-10-07 15:22:12,498 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:12,499 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:12,499 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:12,499 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:22:12,805 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:12,805 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:12,805 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 15:22:12,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 15:22:12,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 15:22:12,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-07 15:22:12,807 INFO L87 Difference]: Start difference. First operand 211 states and 235 transitions. Second operand 12 states. [2019-10-07 15:22:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:13,892 INFO L93 Difference]: Finished difference Result 561 states and 642 transitions. [2019-10-07 15:22:13,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-07 15:22:13,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-07 15:22:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:13,898 INFO L225 Difference]: With dead ends: 561 [2019-10-07 15:22:13,898 INFO L226 Difference]: Without dead ends: 375 [2019-10-07 15:22:13,900 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-07 15:22:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-10-07 15:22:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 363. [2019-10-07 15:22:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-10-07 15:22:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 414 transitions. [2019-10-07 15:22:13,939 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 414 transitions. Word has length 83 [2019-10-07 15:22:13,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:13,940 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 414 transitions. [2019-10-07 15:22:13,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 15:22:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 414 transitions. [2019-10-07 15:22:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-07 15:22:13,942 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:13,943 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:22:13,943 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash -712728111, now seen corresponding path program 1 times [2019-10-07 15:22:13,944 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:13,944 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:13,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:13,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 15:22:14,040 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:14,040 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:14,041 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:22:14,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:22:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:22:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:22:14,042 INFO L87 Difference]: Start difference. First operand 363 states and 414 transitions. Second operand 7 states. [2019-10-07 15:22:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:14,652 INFO L93 Difference]: Finished difference Result 729 states and 857 transitions. [2019-10-07 15:22:14,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 15:22:14,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2019-10-07 15:22:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:14,657 INFO L225 Difference]: With dead ends: 729 [2019-10-07 15:22:14,657 INFO L226 Difference]: Without dead ends: 391 [2019-10-07 15:22:14,658 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-07 15:22:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-10-07 15:22:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 360. [2019-10-07 15:22:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2019-10-07 15:22:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 405 transitions. [2019-10-07 15:22:14,700 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 405 transitions. Word has length 83 [2019-10-07 15:22:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:14,701 INFO L462 AbstractCegarLoop]: Abstraction has 360 states and 405 transitions. [2019-10-07 15:22:14,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:22:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 405 transitions. [2019-10-07 15:22:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 15:22:14,703 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:14,703 INFO L385 BasicCegarLoop]: trace histogram [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 15:22:14,703 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1315543544, now seen corresponding path program 1 times [2019-10-07 15:22:14,704 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:14,704 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:14,704 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:14,704 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:22:14,876 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:14,877 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:22:14,877 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 15:22:14,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 15:22:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 15:22:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:22:14,879 INFO L87 Difference]: Start difference. First operand 360 states and 405 transitions. Second operand 9 states. [2019-10-07 15:22:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:22:15,836 INFO L93 Difference]: Finished difference Result 1103 states and 1272 transitions. [2019-10-07 15:22:15,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:22:15,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2019-10-07 15:22:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:22:15,847 INFO L225 Difference]: With dead ends: 1103 [2019-10-07 15:22:15,847 INFO L226 Difference]: Without dead ends: 834 [2019-10-07 15:22:15,849 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-07 15:22:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2019-10-07 15:22:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 724. [2019-10-07 15:22:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-10-07 15:22:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 822 transitions. [2019-10-07 15:22:15,931 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 822 transitions. Word has length 86 [2019-10-07 15:22:15,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:22:15,932 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 822 transitions. [2019-10-07 15:22:15,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 15:22:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 822 transitions. [2019-10-07 15:22:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-07 15:22:15,941 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:22:15,941 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:15,941 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:22:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:22:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1528068328, now seen corresponding path program 1 times [2019-10-07 15:22:15,942 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:22:15,943 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:15,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:15,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:22:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:22:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:22:16,131 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:22:16,140 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:22:16,141 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 15:22:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:22:16,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 15:22:16,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:22:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:22:16,578 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:22:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:22:17,016 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:22:17,060 INFO L162 IcfgInterpreter]: Started Sifa with 115 locations of interest [2019-10-07 15:22:17,060 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:22:17,066 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:22:17,074 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:22:17,075 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:22:26,655 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-07 15:22:28,268 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:22:28,401 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-07 15:22:28,528 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-07 15:22:28,691 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-07 15:22:28,911 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:29,123 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:29,339 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:29,530 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:29,835 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-07 15:22:29,950 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:30,105 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:30,219 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:30,359 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:30,482 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:22:30,492 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-07 15:22:30,741 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-07 15:22:30,742 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-07 15:22:30,914 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:31,032 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:31,163 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:31,286 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:31,422 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:31,551 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:31,677 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:31,929 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:32,185 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-07 15:22:32,412 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:32,527 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:32,647 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:32,768 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:33,092 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:33,202 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:33,419 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:33,737 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:33,859 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:34,080 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:34,399 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:34,509 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:34,726 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:35,037 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:35,269 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:35,389 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:35,536 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:35,652 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:35,796 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:35,921 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:36,033 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:36,192 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:36,304 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:36,415 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:36,534 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:36,677 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:36,790 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:36,925 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:37,149 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-07 15:22:37,261 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:37,390 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:37,589 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-07 15:22:37,701 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:37,826 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:37,940 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:38,051 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:38,191 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:38,303 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:38,415 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:38,541 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:38,684 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:38,802 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:38,928 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:39,162 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-07 15:22:39,278 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:39,428 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:39,541 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:39,657 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:39,781 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:39,909 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,020 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,145 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,259 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,370 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,493 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,617 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,730 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:40,849 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:41,083 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-07 15:22:41,195 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:41,322 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:41,529 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:41,643 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:41,775 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:41,972 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-07 15:22:42,083 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:42,207 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:42,417 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-07 15:22:42,541 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:42,670 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:42,881 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-07 15:22:42,993 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:43,120 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:43,248 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:43,357 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:43,480 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:43,595 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:43,705 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:43,832 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:43,941 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,050 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,167 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,292 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,402 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,535 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,652 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,762 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,887 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:44,996 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:45,105 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:45,223 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:45,433 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:45,547 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:45,672 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:46,032 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:46,145 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:46,268 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:46,389 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:46,499 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:46,619 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:46,737 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:46,847 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:46,968 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:47,207 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:47,491 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:47,669 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:47,783 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:47,892 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:48,012 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:48,124 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:48,234 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:48,352 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:48,629 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:48,740 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:48,863 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:49,068 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:49,186 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:49,314 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:49,427 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:49,538 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:49,659 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:49,851 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-07 15:22:49,962 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:22:50,084 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:50,286 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-07 15:22:50,397 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:50,522 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:50,642 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:50,753 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:50,876 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:50,997 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:51,105 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:51,231 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:51,341 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:51,451 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:51,569 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:51,786 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:51,900 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:52,023 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:52,373 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:52,516 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:52,643 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:52,842 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:52,953 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:53,074 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:53,265 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-07 15:22:53,376 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:53,505 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:53,697 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-07 15:22:53,809 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:53,932 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:54,136 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-07 15:22:54,249 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:54,372 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:54,580 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-07 15:22:54,693 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:54,820 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-07 15:22:54,940 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,049 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,173 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,284 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,393 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,514 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,629 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,739 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,857 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:55,981 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:56,092 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:56,215 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:56,417 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:56,529 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:56,655 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:56,853 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-07 15:22:56,966 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:57,086 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:57,277 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-07 15:22:57,388 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:57,514 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:57,517 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-10-07 15:22:57,713 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:22:57,831 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:58,164 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:58,331 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 548 [2019-10-07 15:22:58,546 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:58,858 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:58,863 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-10-07 15:22:59,176 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:22:59,506 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:59,613 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:22:59,833 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-07 15:22:59,941 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-07 15:23:00,059 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-07 15:23:00,182 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:23:00,292 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-07 15:23:00,394 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-07 15:23:00,520 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 577 [2019-10-07 15:23:00,661 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:00,939 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:01,294 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 583 DAG size of output: 581 [2019-10-07 15:23:01,492 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 585 DAG size of output: 565 [2019-10-07 15:23:01,804 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:02,172 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:02,309 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:02,581 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:02,918 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:03,023 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:03,289 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:03,630 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:03,733 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:04,020 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:04,356 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:04,460 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:04,747 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:05,087 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:05,192 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:05,460 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:05,801 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:05,906 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:06,175 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:06,511 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:06,616 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:06,891 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:07,228 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:07,335 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:07,607 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:07,946 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:08,052 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:08,319 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:08,657 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:08,761 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:09,032 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:09,376 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:09,481 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:09,751 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:23:10,107 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-10-07 15:23:10,467 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:10,882 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:11,282 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:11,696 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:12,105 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:12,505 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:12,908 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:13,308 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:13,718 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:14,125 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:14,525 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:14,950 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-10-07 15:23:15,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:23:15,214 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.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 15:23:15,220 INFO L168 Benchmark]: Toolchain (without parser) took 67602.23 ms. Allocated memory was 141.0 MB in the beginning and 1.1 GB in the end (delta: 961.0 MB). Free memory was 103.7 MB in the beginning and 106.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 958.5 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:15,221 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 15:23:15,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.01 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.5 MB in the beginning and 168.6 MB in the end (delta: -65.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:15,221 INFO L168 Benchmark]: Boogie Preprocessor took 87.18 ms. Allocated memory is still 202.9 MB. Free memory was 168.6 MB in the beginning and 164.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:15,222 INFO L168 Benchmark]: RCFGBuilder took 1716.54 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 164.3 MB in the beginning and 134.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:15,222 INFO L168 Benchmark]: TraceAbstraction took 64999.13 ms. Allocated memory was 232.8 MB in the beginning and 1.1 GB in the end (delta: 869.3 MB). Free memory was 133.0 MB in the beginning and 106.3 MB in the end (delta: 26.7 MB). Peak memory consumption was 896.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:15,224 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.01 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.5 MB in the beginning and 168.6 MB in the end (delta: -65.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.18 ms. Allocated memory is still 202.9 MB. Free memory was 168.6 MB in the beginning and 164.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1716.54 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 164.3 MB in the beginning and 134.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 64999.13 ms. Allocated memory was 232.8 MB in the beginning and 1.1 GB in the end (delta: 869.3 MB). Free memory was 133.0 MB in the beginning and 106.3 MB in the end (delta: 26.7 MB). Peak memory consumption was 896.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...