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/elevator_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:16,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:16,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:16,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:16,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:16,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:16,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:16,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:16,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:16,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:16,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:16,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:16,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:16,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:16,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:16,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:16,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:16,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:16,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:16,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:16,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:16,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:16,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:16,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:16,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:16,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:16,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:16,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:16,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:16,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:16,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:16,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:16,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:16,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:16,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:16,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:16,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:16,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:16,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:16,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:16,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:16,356 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 [2019-10-15 03:09:16,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:16,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:16,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:16,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:16,374 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:16,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:16,375 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:16,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:16,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:16,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:16,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:16,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:16,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:16,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:16,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:16,377 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:16,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:16,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:16,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:16,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:16,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:16,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:16,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:16,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:16,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:16,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:16,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:16,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:16,379 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 [2019-10-15 03:09:16,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:16,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:16,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:16,804 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:16,805 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:16,806 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2019-10-15 03:09:16,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab75694a7/7587334cc7a0400c839cad4bbaa3d548/FLAGcd8e45375 [2019-10-15 03:09:17,852 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:17,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2019-10-15 03:09:17,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab75694a7/7587334cc7a0400c839cad4bbaa3d548/FLAGcd8e45375 [2019-10-15 03:09:18,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab75694a7/7587334cc7a0400c839cad4bbaa3d548 [2019-10-15 03:09:18,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:18,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:18,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:18,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:18,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:18,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:18" (1/1) ... [2019-10-15 03:09:18,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1e5469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:18, skipping insertion in model container [2019-10-15 03:09:18,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:18" (1/1) ... [2019-10-15 03:09:18,405 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:18,512 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:19,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:19,412 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:19,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:19,692 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:19,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19 WrapperNode [2019-10-15 03:09:19,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:19,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:19,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:19,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:19,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (1/1) ... [2019-10-15 03:09:19,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:19,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:19,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:19,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:19,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (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 [2019-10-15 03:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:20,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:20,018 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:20,018 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:20,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:20,026 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:20,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:26,613 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:26,614 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:26,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:26 BoogieIcfgContainer [2019-10-15 03:09:26,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:26,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:26,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:26,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:26,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:18" (1/3) ... [2019-10-15 03:09:26,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439277b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:26, skipping insertion in model container [2019-10-15 03:09:26,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:19" (2/3) ... [2019-10-15 03:09:26,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439277b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:26, skipping insertion in model container [2019-10-15 03:09:26,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:26" (3/3) ... [2019-10-15 03:09:26,627 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2019-10-15 03:09:26,641 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:26,653 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:26,668 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:26,706 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:26,707 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:26,707 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:26,707 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:26,707 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:26,707 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:26,708 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:26,708 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-10-15 03:09:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 03:09:26,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:26,781 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:26,786 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:26,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:26,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1500061591, now seen corresponding path program 1 times [2019-10-15 03:09:26,807 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:26,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505045472] [2019-10-15 03:09:26,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:26,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:26,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:28,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505045472] [2019-10-15 03:09:28,086 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:28,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:28,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935783134] [2019-10-15 03:09:28,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:28,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:28,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:28,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:28,112 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 8 states. [2019-10-15 03:09:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:33,112 INFO L93 Difference]: Finished difference Result 1614 states and 2480 transitions. [2019-10-15 03:09:33,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:33,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-10-15 03:09:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:33,152 INFO L225 Difference]: With dead ends: 1614 [2019-10-15 03:09:33,152 INFO L226 Difference]: Without dead ends: 1163 [2019-10-15 03:09:33,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2019-10-15 03:09:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1153. [2019-10-15 03:09:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2019-10-15 03:09:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1725 transitions. [2019-10-15 03:09:33,486 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1725 transitions. Word has length 98 [2019-10-15 03:09:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,488 INFO L462 AbstractCegarLoop]: Abstraction has 1153 states and 1725 transitions. [2019-10-15 03:09:33,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1725 transitions. [2019-10-15 03:09:33,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 03:09:33,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,506 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:33,507 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:33,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:33,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1113138244, now seen corresponding path program 1 times [2019-10-15 03:09:33,509 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:33,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466160516] [2019-10-15 03:09:33,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:33,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466160516] [2019-10-15 03:09:33,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:33,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:33,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051868049] [2019-10-15 03:09:33,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:33,902 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:33,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:33,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:33,905 INFO L87 Difference]: Start difference. First operand 1153 states and 1725 transitions. Second operand 8 states. [2019-10-15 03:09:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:34,093 INFO L93 Difference]: Finished difference Result 2012 states and 3042 transitions. [2019-10-15 03:09:34,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:09:34,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-15 03:09:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:34,111 INFO L225 Difference]: With dead ends: 2012 [2019-10-15 03:09:34,111 INFO L226 Difference]: Without dead ends: 1171 [2019-10-15 03:09:34,119 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-10-15 03:09:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2019-10-15 03:09:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2019-10-15 03:09:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1746 transitions. [2019-10-15 03:09:34,222 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1746 transitions. Word has length 103 [2019-10-15 03:09:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:34,227 INFO L462 AbstractCegarLoop]: Abstraction has 1171 states and 1746 transitions. [2019-10-15 03:09:34,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1746 transitions. [2019-10-15 03:09:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:09:34,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:34,238 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:34,238 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:34,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1868811998, now seen corresponding path program 1 times [2019-10-15 03:09:34,239 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:34,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78976068] [2019-10-15 03:09:34,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:34,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:34,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:34,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78976068] [2019-10-15 03:09:34,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979196939] [2019-10-15 03:09:34,573 INFO L94 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 [2019-10-15 03:09:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:35,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:09:35,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:35,771 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:35,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:36,166 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:36,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2019-10-15 03:09:36,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782144616] [2019-10-15 03:09:36,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:36,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:36,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:36,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:36,172 INFO L87 Difference]: Start difference. First operand 1171 states and 1746 transitions. Second operand 7 states. [2019-10-15 03:09:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:37,985 INFO L93 Difference]: Finished difference Result 2061 states and 3106 transitions. [2019-10-15 03:09:37,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:09:37,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-15 03:09:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:38,001 INFO L225 Difference]: With dead ends: 2061 [2019-10-15 03:09:38,001 INFO L226 Difference]: Without dead ends: 1207 [2019-10-15 03:09:38,010 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2019-10-15 03:09:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1175. [2019-10-15 03:09:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-15 03:09:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1749 transitions. [2019-10-15 03:09:38,100 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1749 transitions. Word has length 107 [2019-10-15 03:09:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:38,101 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1749 transitions. [2019-10-15 03:09:38,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1749 transitions. [2019-10-15 03:09:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 03:09:38,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:38,106 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:38,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:38,321 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1196719180, now seen corresponding path program 1 times [2019-10-15 03:09:38,322 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:38,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027875586] [2019-10-15 03:09:38,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:38,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027875586] [2019-10-15 03:09:38,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701313152] [2019-10-15 03:09:38,700 INFO L94 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 [2019-10-15 03:09:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:39,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:09:39,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:39,404 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:39,688 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:39,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2019-10-15 03:09:39,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248645457] [2019-10-15 03:09:39,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:09:39,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:39,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:09:39,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:39,691 INFO L87 Difference]: Start difference. First operand 1175 states and 1749 transitions. Second operand 5 states. [2019-10-15 03:09:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:40,096 INFO L93 Difference]: Finished difference Result 2163 states and 3293 transitions. [2019-10-15 03:09:40,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:40,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-15 03:09:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:40,119 INFO L225 Difference]: With dead ends: 2163 [2019-10-15 03:09:40,120 INFO L226 Difference]: Without dead ends: 1175 [2019-10-15 03:09:40,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:09:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-15 03:09:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2019-10-15 03:09:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-15 03:09:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1731 transitions. [2019-10-15 03:09:40,263 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1731 transitions. Word has length 108 [2019-10-15 03:09:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:40,264 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1731 transitions. [2019-10-15 03:09:40,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:09:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1731 transitions. [2019-10-15 03:09:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:09:40,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:40,269 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:40,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:40,497 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash -287959244, now seen corresponding path program 1 times [2019-10-15 03:09:40,500 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:40,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968974770] [2019-10-15 03:09:40,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:40,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:40,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:40,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968974770] [2019-10-15 03:09:40,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532291082] [2019-10-15 03:09:40,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:41,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-15 03:09:41,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:41,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:41,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:41,678 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:42,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:42,309 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:42,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:42,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:42,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2019-10-15 03:09:42,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675815422] [2019-10-15 03:09:42,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:42,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:42,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:42,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:09:42,496 INFO L87 Difference]: Start difference. First operand 1175 states and 1731 transitions. Second operand 10 states. [2019-10-15 03:09:43,977 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2019-10-15 03:09:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:50,931 INFO L93 Difference]: Finished difference Result 2910 states and 4402 transitions. [2019-10-15 03:09:50,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 03:09:50,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2019-10-15 03:09:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:50,954 INFO L225 Difference]: With dead ends: 2910 [2019-10-15 03:09:50,954 INFO L226 Difference]: Without dead ends: 2137 [2019-10-15 03:09:50,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 03:09:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2019-10-15 03:09:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2020. [2019-10-15 03:09:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2019-10-15 03:09:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3016 transitions. [2019-10-15 03:09:51,104 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3016 transitions. Word has length 110 [2019-10-15 03:09:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:51,105 INFO L462 AbstractCegarLoop]: Abstraction has 2020 states and 3016 transitions. [2019-10-15 03:09:51,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3016 transitions. [2019-10-15 03:09:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:09:51,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:51,109 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:51,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:51,326 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:51,326 INFO L82 PathProgramCache]: Analyzing trace with hash -43094052, now seen corresponding path program 1 times [2019-10-15 03:09:51,327 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:51,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670085062] [2019-10-15 03:09:51,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:51,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:51,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:51,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670085062] [2019-10-15 03:09:51,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233386775] [2019-10-15 03:09:51,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:52,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:09:52,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:52,267 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:52,439 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:52,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 03:09:52,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597275618] [2019-10-15 03:09:52,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:52,442 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:52,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:52,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:52,443 INFO L87 Difference]: Start difference. First operand 2020 states and 3016 transitions. Second operand 3 states. [2019-10-15 03:09:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:52,775 INFO L93 Difference]: Finished difference Result 5789 states and 8901 transitions. [2019-10-15 03:09:52,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:52,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-15 03:09:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:52,806 INFO L225 Difference]: With dead ends: 5789 [2019-10-15 03:09:52,806 INFO L226 Difference]: Without dead ends: 3800 [2019-10-15 03:09:52,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2019-10-15 03:09:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3677. [2019-10-15 03:09:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2019-10-15 03:09:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5541 transitions. [2019-10-15 03:09:53,028 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5541 transitions. Word has length 111 [2019-10-15 03:09:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:53,029 INFO L462 AbstractCegarLoop]: Abstraction has 3677 states and 5541 transitions. [2019-10-15 03:09:53,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5541 transitions. [2019-10-15 03:09:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:09:53,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:53,033 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:53,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:53,241 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash -191467676, now seen corresponding path program 1 times [2019-10-15 03:09:53,242 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:53,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044996016] [2019-10-15 03:09:53,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:53,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:53,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:53,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044996016] [2019-10-15 03:09:53,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100455446] [2019-10-15 03:09:53,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:54,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:54,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:54,301 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:54,502 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:54,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:54,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078430047] [2019-10-15 03:09:54,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:54,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:54,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:54,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:54,519 INFO L87 Difference]: Start difference. First operand 3677 states and 5541 transitions. Second operand 3 states. [2019-10-15 03:09:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:54,909 INFO L93 Difference]: Finished difference Result 8236 states and 12606 transitions. [2019-10-15 03:09:54,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:54,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-15 03:09:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:54,951 INFO L225 Difference]: With dead ends: 8236 [2019-10-15 03:09:54,951 INFO L226 Difference]: Without dead ends: 4590 [2019-10-15 03:09:54,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2019-10-15 03:09:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 4480. [2019-10-15 03:09:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4480 states. [2019-10-15 03:09:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6770 transitions. [2019-10-15 03:09:55,346 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6770 transitions. Word has length 110 [2019-10-15 03:09:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:55,347 INFO L462 AbstractCegarLoop]: Abstraction has 4480 states and 6770 transitions. [2019-10-15 03:09:55,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6770 transitions. [2019-10-15 03:09:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 03:09:55,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:55,353 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:55,566 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:55,567 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1202175783, now seen corresponding path program 1 times [2019-10-15 03:09:55,568 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:55,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43156904] [2019-10-15 03:09:55,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:55,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:55,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:09:55,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43156904] [2019-10-15 03:09:55,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534358640] [2019-10-15 03:09:55,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true