java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:19:18,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:19:18,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:19:18,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:19:18,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:19:18,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:19:18,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:19:18,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:19:18,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:19:18,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:19:18,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:19:18,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:19:18,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:19:18,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:19:18,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:19:18,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:19:18,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:19:18,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:19:18,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:19:18,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:19:18,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:19:18,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:19:18,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:19:18,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:19:18,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:19:18,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:19:18,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:19:18,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:19:18,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:19:18,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:19:18,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:19:18,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:19:18,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:19:18,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:19:18,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:19:18,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:19:18,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:19:18,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:19:18,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:19:18,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:19:18,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:19:18,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 15:19:18,353 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:19:18,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:19:18,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:19:18,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:19:18,356 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:19:18,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:19:18,357 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:19:18,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:19:18,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:19:18,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:19:18,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:19:18,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:19:18,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:19:18,360 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:19:18,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:19:18,360 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:19:18,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:19:18,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:19:18,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:19:18,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:19:18,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:19:18,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:18,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:19:18,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:19:18,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:19:18,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:19:18,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:19:18,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:19:18,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 15:19:18,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:19:18,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:19:18,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:19:18,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:19:18,658 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:19:18,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2019-10-07 15:19:18,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00190592/edac1ac3358945b9b41b0c34e4f76b66/FLAGe2782cd5d [2019-10-07 15:19:19,388 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:19:19,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2019-10-07 15:19:19,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00190592/edac1ac3358945b9b41b0c34e4f76b66/FLAGe2782cd5d [2019-10-07 15:19:19,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00190592/edac1ac3358945b9b41b0c34e4f76b66 [2019-10-07 15:19:19,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:19:19,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:19:19,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:19,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:19:19,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:19:19,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:19" (1/1) ... [2019-10-07 15:19:19,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339cab54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:19, skipping insertion in model container [2019-10-07 15:19:19,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:19" (1/1) ... [2019-10-07 15:19:19,634 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:19:19,697 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:19:20,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:20,156 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:19:20,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:20,328 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:19:20,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20 WrapperNode [2019-10-07 15:19:20,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:20,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:19:20,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:19:20,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:19:20,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:19:20,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:19:20,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:19:20,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:19:20,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:20,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:19:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:19:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:19:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:19:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:19:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:19:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:19:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:19:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:19:20,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:19:20,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:19:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:19:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:19:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:19:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:19:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:19:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:19:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:19:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:19:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:19:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:19:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:19:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:19:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:19:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:19:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:19:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:19:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:19:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:19:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:19:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:19:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:19:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:19:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-07 15:19:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:19:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:19:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:19:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:19:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:19:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:19:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:19:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:19:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:19:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:19:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:19:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:19:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:19:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:19:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:19:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:19:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:19:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:19:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:19:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:19:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:19:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:19:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:19:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:19:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:19:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:19:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:19:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:19:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:19:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:19:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:19:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:19:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:19:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:19:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:19:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:19:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-07 15:19:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:19:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:19:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:19:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:19:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:19:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:19:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:19:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:19:22,666 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:19:22,666 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:19:22,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:22 BoogieIcfgContainer [2019-10-07 15:19:22,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:19:22,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:19:22,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:19:22,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:19:22,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:19:19" (1/3) ... [2019-10-07 15:19:22,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8df3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:22, skipping insertion in model container [2019-10-07 15:19:22,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (2/3) ... [2019-10-07 15:19:22,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8df3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:22, skipping insertion in model container [2019-10-07 15:19:22,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:22" (3/3) ... [2019-10-07 15:19:22,680 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2019-10-07 15:19:22,690 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:19:22,700 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:19:22,711 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:19:22,754 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:19:22,755 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:19:22,755 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:19:22,755 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:19:22,755 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:19:22,755 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:19:22,756 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:19:22,756 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:19:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2019-10-07 15:19:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 15:19:22,804 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:22,805 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:22,810 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1855036009, now seen corresponding path program 1 times [2019-10-07 15:19:22,828 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:22,828 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:22,828 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:22,828 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:23,168 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,169 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:23,170 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:19:23,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:19:23,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:19:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:23,192 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 2 states. [2019-10-07 15:19:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:23,232 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2019-10-07 15:19:23,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:19:23,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-07 15:19:23,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:23,245 INFO L225 Difference]: With dead ends: 219 [2019-10-07 15:19:23,246 INFO L226 Difference]: Without dead ends: 110 [2019-10-07 15:19:23,250 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-07 15:19:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-07 15:19:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-07 15:19:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2019-10-07 15:19:23,305 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 42 [2019-10-07 15:19:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:23,305 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2019-10-07 15:19:23,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:19:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2019-10-07 15:19:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 15:19:23,310 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:23,310 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:23,310 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1724353903, now seen corresponding path program 1 times [2019-10-07 15:19:23,311 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:23,312 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,312 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,312 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:23,447 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,447 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:23,447 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:19:23,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:23,451 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 3 states. [2019-10-07 15:19:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:23,491 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2019-10-07 15:19:23,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:23,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-07 15:19:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:23,495 INFO L225 Difference]: With dead ends: 173 [2019-10-07 15:19:23,495 INFO L226 Difference]: Without dead ends: 102 [2019-10-07 15:19:23,496 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-07 15:19:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-07 15:19:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-07 15:19:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2019-10-07 15:19:23,511 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 43 [2019-10-07 15:19:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:23,512 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2019-10-07 15:19:23,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2019-10-07 15:19:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-07 15:19:23,515 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:23,515 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:23,515 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:23,516 INFO L82 PathProgramCache]: Analyzing trace with hash -526236297, now seen corresponding path program 1 times [2019-10-07 15:19:23,516 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:23,516 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,517 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,517 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:23,728 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,729 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:23,729 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:19:23,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:23,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:23,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:19:23,731 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2019-10-07 15:19:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:24,063 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2019-10-07 15:19:24,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 15:19:24,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-07 15:19:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:24,066 INFO L225 Difference]: With dead ends: 182 [2019-10-07 15:19:24,067 INFO L226 Difference]: Without dead ends: 102 [2019-10-07 15:19:24,069 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 15:19:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-07 15:19:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-07 15:19:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-07 15:19:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2019-10-07 15:19:24,094 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 46 [2019-10-07 15:19:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:24,094 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2019-10-07 15:19:24,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2019-10-07 15:19:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-07 15:19:24,097 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:24,097 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:24,098 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:24,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1609259560, now seen corresponding path program 1 times [2019-10-07 15:19:24,098 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:24,098 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,099 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,099 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:24,242 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,243 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:24,243 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 15:19:24,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 15:19:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 15:19:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:19:24,244 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 5 states. [2019-10-07 15:19:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:24,720 INFO L93 Difference]: Finished difference Result 270 states and 316 transitions. [2019-10-07 15:19:24,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:19:24,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-10-07 15:19:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:24,723 INFO L225 Difference]: With dead ends: 270 [2019-10-07 15:19:24,723 INFO L226 Difference]: Without dead ends: 190 [2019-10-07 15:19:24,725 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-10-07 15:19:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2019-10-07 15:19:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-10-07 15:19:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2019-10-07 15:19:24,750 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 59 [2019-10-07 15:19:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:24,751 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2019-10-07 15:19:24,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 15:19:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2019-10-07 15:19:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-07 15:19:24,753 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:24,753 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:24,753 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:24,754 INFO L82 PathProgramCache]: Analyzing trace with hash 502948974, now seen corresponding path program 1 times [2019-10-07 15:19:24,754 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:24,754 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,754 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,755 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:24,983 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,983 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:24,983 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 15:19:24,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 15:19:24,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 15:19:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:24,984 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand 10 states. [2019-10-07 15:19:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:25,468 INFO L93 Difference]: Finished difference Result 508 states and 587 transitions. [2019-10-07 15:19:25,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:19:25,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2019-10-07 15:19:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:25,475 INFO L225 Difference]: With dead ends: 508 [2019-10-07 15:19:25,475 INFO L226 Difference]: Without dead ends: 357 [2019-10-07 15:19:25,477 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2019-10-07 15:19:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 343. [2019-10-07 15:19:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-07 15:19:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 384 transitions. [2019-10-07 15:19:25,519 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 384 transitions. Word has length 68 [2019-10-07 15:19:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:25,520 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 384 transitions. [2019-10-07 15:19:25,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 15:19:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 384 transitions. [2019-10-07 15:19:25,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-07 15:19:25,524 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:25,524 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:25,524 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash -339452596, now seen corresponding path program 1 times [2019-10-07 15:19:25,525 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:25,525 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,525 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,525 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 15:19:25,890 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:26,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 15:19:26,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:19:26,215 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 15:19:26,443 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:19:26,443 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [14] total 19 [2019-10-07 15:19:26,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:26,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:26,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:26,446 INFO L87 Difference]: Start difference. First operand 343 states and 384 transitions. Second operand 7 states. [2019-10-07 15:19:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:26,769 INFO L93 Difference]: Finished difference Result 352 states and 393 transitions. [2019-10-07 15:19:26,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:19:26,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2019-10-07 15:19:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:26,774 INFO L225 Difference]: With dead ends: 352 [2019-10-07 15:19:26,774 INFO L226 Difference]: Without dead ends: 349 [2019-10-07 15:19:26,775 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2019-10-07 15:19:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-10-07 15:19:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-10-07 15:19:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-07 15:19:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 383 transitions. [2019-10-07 15:19:26,812 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 383 transitions. Word has length 109 [2019-10-07 15:19:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,813 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 383 transitions. [2019-10-07 15:19:26,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 383 transitions. [2019-10-07 15:19:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 15:19:26,817 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,817 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:27,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:27,033 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:27,033 INFO L82 PathProgramCache]: Analyzing trace with hash 789532686, now seen corresponding path program 1 times [2019-10-07 15:19:27,033 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:27,034 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,034 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,034 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 15:19:27,364 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,365 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-07 15:19:27,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:27,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:27,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:27,921 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:28,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 15:19:29,479 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:29,480 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-07 15:19:29,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:29,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 15:19:29,482 INFO L87 Difference]: Start difference. First operand 343 states and 383 transitions. Second operand 14 states. [2019-10-07 15:19:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:31,721 INFO L93 Difference]: Finished difference Result 757 states and 870 transitions. [2019-10-07 15:19:31,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 15:19:31,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 117 [2019-10-07 15:19:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:31,727 INFO L225 Difference]: With dead ends: 757 [2019-10-07 15:19:31,727 INFO L226 Difference]: Without dead ends: 436 [2019-10-07 15:19:31,731 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 212 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=388, Invalid=2474, Unknown=0, NotChecked=0, Total=2862 [2019-10-07 15:19:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-07 15:19:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 429. [2019-10-07 15:19:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-07 15:19:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 481 transitions. [2019-10-07 15:19:31,776 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 481 transitions. Word has length 117 [2019-10-07 15:19:31,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:31,778 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 481 transitions. [2019-10-07 15:19:31,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 481 transitions. [2019-10-07 15:19:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 15:19:31,781 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:31,781 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:31,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:31,988 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:31,988 INFO L82 PathProgramCache]: Analyzing trace with hash -853583212, now seen corresponding path program 2 times [2019-10-07 15:19:31,989 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:31,989 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:31,989 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:31,989 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:19:32,162 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:32,162 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:32,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:32,404 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-07 15:19:32,404 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 15:19:32,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-07 15:19:32,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:32,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:32,690 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:33,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:19:33,465 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:19:33,494 INFO L162 IcfgInterpreter]: Started Sifa with 92 locations of interest [2019-10-07 15:19:33,494 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:19:33,500 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:19:33,508 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:19:33,508 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:19:44,129 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-07 15:19:45,803 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:19:46,011 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:46,127 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:46,260 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:46,501 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:46,747 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:46,964 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:47,195 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:47,603 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-07 15:19:47,780 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:47,926 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:48,068 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:48,232 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:48,406 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:48,414 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-07 15:19:48,681 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-07 15:19:48,682 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-07 15:19:48,797 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:48,945 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:49,088 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,317 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:49,455 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,662 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:49,882 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:50,140 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-07 15:19:50,282 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:50,409 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:50,618 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:50,738 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:50,955 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:51,074 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:51,178 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:51,285 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:51,403 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:51,515 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:51,643 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:51,766 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:51,870 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:52,086 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:52,302 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:52,419 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:52,521 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:52,744 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:52,945 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:53,087 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:53,204 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:53,307 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:53,427 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:53,574 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:53,686 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:53,809 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,022 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:54,138 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,263 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,376 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,489 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,608 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,771 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:54,927 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,051 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,275 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:19:55,386 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:19:55,513 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,698 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:19:55,817 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:19:55,937 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:56,059 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:56,173 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:56,297 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:56,413 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:56,529 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:56,655 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:56,810 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:56,935 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:57,060 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:57,180 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:57,295 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:57,564 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:57,780 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:57,897 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:58,020 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:58,242 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:58,356 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,530 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,736 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:58,846 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,972 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,090 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,211 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,330 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,458 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:59,569 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:59,696 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:59,818 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:59,932 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,065 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,198 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,317 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,447 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,565 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:00,684 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:00,809 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:00,924 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:01,039 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:01,170 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:01,547 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:01,662 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,787 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,997 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:02,109 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,235 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,346 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,455 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,578 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,807 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:02,921 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,041 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,239 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:03,350 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,474 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,751 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:03,865 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,989 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,186 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:04,299 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,421 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,532 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,641 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,761 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,938 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,050 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,175 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,295 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,406 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,537 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,651 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,765 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,888 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:06,113 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-07 15:20:06,227 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:06,356 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:06,559 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:06,680 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:06,807 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:07,016 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:07,127 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,251 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,451 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:07,562 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,682 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,794 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,908 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:08,030 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:08,230 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:08,355 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:08,478 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,599 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,713 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:08,841 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:09,032 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:09,148 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:09,276 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:09,482 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-07 15:20:09,596 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:09,721 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:09,928 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:10,044 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,170 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,383 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:10,499 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,634 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:10,851 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:10,965 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,092 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:11,301 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:11,410 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,534 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,732 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:11,844 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,966 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,076 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,190 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,309 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,433 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:12,545 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:12,667 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:12,784 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:12,897 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,026 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,140 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,256 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,380 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,586 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-07 15:20:13,699 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:13,822 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:14,033 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:14,142 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:14,265 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:14,463 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:14,574 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:14,695 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:14,809 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:14,918 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:15,036 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:15,237 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:15,349 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:15,479 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:15,698 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:15,951 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:16,249 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:16,254 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-10-07 15:20:16,426 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:16,581 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:16,701 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,706 INFO L199 IcfgInterpreter]: Interpreting procedure setup with input of size 540 for LOIs [2019-10-07 15:20:16,810 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:16,912 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:17,125 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:17,227 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:17,339 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:17,340 INFO L199 IcfgInterpreter]: Interpreting procedure select_features with input of size 540 for LOIs [2019-10-07 15:20:17,541 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:17,957 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:17,958 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-10-07 15:20:18,060 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:18,277 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:18,499 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:18,622 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:18,783 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:19,053 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:19,427 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:19,825 WARN L191 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:20,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:20,141 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:20:20,148 INFO L168 Benchmark]: Toolchain (without parser) took 60533.11 ms. Allocated memory was 143.7 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 101.5 MB in the beginning and 1.1 GB in the end (delta: -961.7 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:20,148 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 15:20:20,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.37 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 101.3 MB in the beginning and 168.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:20,149 INFO L168 Benchmark]: Boogie Preprocessor took 106.93 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 164.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:20,150 INFO L168 Benchmark]: RCFGBuilder took 2231.17 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 142.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:20,150 INFO L168 Benchmark]: TraceAbstraction took 57477.33 ms. Allocated memory was 235.4 MB in the beginning and 1.1 GB in the end (delta: 914.4 MB). Free memory was 142.8 MB in the beginning and 1.1 GB in the end (delta: -920.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 15:20:20,155 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.37 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 101.3 MB in the beginning and 168.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.93 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 164.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2231.17 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 142.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57477.33 ms. Allocated memory was 235.4 MB in the beginning and 1.1 GB in the end (delta: 914.4 MB). Free memory was 142.8 MB in the beginning and 1.1 GB in the end (delta: -920.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...