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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:56,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:56,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:56,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:56,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:56,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:56,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:56,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:56,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:56,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:56,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:56,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:56,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:56,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:56,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:56,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:56,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:56,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:56,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:56,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:56,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:56,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:56,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:56,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:56,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:56,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:56,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:56,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:56,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:56,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:56,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:56,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:56,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:56,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:56,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:56,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:56,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:56,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:56,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:56,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:56,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:56,710 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 [2019-10-13 23:04:56,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:56,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:56,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:56,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:56,751 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:56,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:56,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:56,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:56,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:56,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:56,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:56,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:56,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:56,754 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:56,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:56,754 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:56,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:56,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:56,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:56,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:56,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:56,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:56,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:56,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:56,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:56,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:56,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:56,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:56,758 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 [2019-10-13 23:04:57,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:57,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:57,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:57,059 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:57,060 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:57,061 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-13 23:04:57,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397d09568/16c79de2e33f48c39583a71e11a08803/FLAG3ab4d2881 [2019-10-13 23:04:57,822 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:57,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-13 23:04:57,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397d09568/16c79de2e33f48c39583a71e11a08803/FLAG3ab4d2881 [2019-10-13 23:04:57,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397d09568/16c79de2e33f48c39583a71e11a08803 [2019-10-13 23:04:57,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:57,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:57,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:57,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:57,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:57,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:57" (1/1) ... [2019-10-13 23:04:57,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df463d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:57, skipping insertion in model container [2019-10-13 23:04:57,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:57" (1/1) ... [2019-10-13 23:04:58,008 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:58,100 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:58,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:58,897 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:59,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:59,074 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:59,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59 WrapperNode [2019-10-13 23:04:59,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:59,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:59,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:59,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:59,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (1/1) ... [2019-10-13 23:04:59,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:59,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:59,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:59,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:59,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (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 [2019-10-13 23:04:59,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:59,373 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:04:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:59,397 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:59,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:04:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:04,833 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:04,833 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:04,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:04 BoogieIcfgContainer [2019-10-13 23:05:04,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:04,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:04,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:04,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:04,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:57" (1/3) ... [2019-10-13 23:05:04,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6316da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:04, skipping insertion in model container [2019-10-13 23:05:04,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:59" (2/3) ... [2019-10-13 23:05:04,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6316da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:04, skipping insertion in model container [2019-10-13 23:05:04,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:04" (3/3) ... [2019-10-13 23:05:04,843 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-10-13 23:05:04,853 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:04,862 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:04,872 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:04,905 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:04,905 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:04,905 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:04,905 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:04,906 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:04,906 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:04,906 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:04,906 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states. [2019-10-13 23:05:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:05:04,952 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:04,953 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] [2019-10-13 23:05:04,955 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:04,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1324391613, now seen corresponding path program 1 times [2019-10-13 23:05:04,969 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:04,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393189740] [2019-10-13 23:05:04,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:04,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:04,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:05,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393189740] [2019-10-13 23:05:05,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940448949] [2019-10-13 23:05:05,783 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 [2019-10-13 23:05:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:06,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:06,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:06,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:06,632 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:06,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:06,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168092746] [2019-10-13 23:05:06,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:06,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:06,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:06,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:06,662 INFO L87 Difference]: Start difference. First operand 617 states. Second operand 3 states. [2019-10-13 23:05:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:06,867 INFO L93 Difference]: Finished difference Result 1355 states and 2052 transitions. [2019-10-13 23:05:06,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:06,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-10-13 23:05:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:06,903 INFO L225 Difference]: With dead ends: 1355 [2019-10-13 23:05:06,903 INFO L226 Difference]: Without dead ends: 876 [2019-10-13 23:05:06,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-10-13 23:05:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 863. [2019-10-13 23:05:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-10-13 23:05:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1290 transitions. [2019-10-13 23:05:07,083 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1290 transitions. Word has length 80 [2019-10-13 23:05:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:07,084 INFO L462 AbstractCegarLoop]: Abstraction has 863 states and 1290 transitions. [2019-10-13 23:05:07,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1290 transitions. [2019-10-13 23:05:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:05:07,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:07,090 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] [2019-10-13 23:05:07,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:07,295 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1390861368, now seen corresponding path program 1 times [2019-10-13 23:05:07,296 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:07,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376616716] [2019-10-13 23:05:07,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:07,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376616716] [2019-10-13 23:05:07,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:07,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:07,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55583533] [2019-10-13 23:05:07,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:07,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:07,594 INFO L87 Difference]: Start difference. First operand 863 states and 1290 transitions. Second operand 3 states. [2019-10-13 23:05:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:07,941 INFO L93 Difference]: Finished difference Result 2513 states and 3820 transitions. [2019-10-13 23:05:07,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:07,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:05:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:07,957 INFO L225 Difference]: With dead ends: 2513 [2019-10-13 23:05:07,957 INFO L226 Difference]: Without dead ends: 1681 [2019-10-13 23:05:07,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2019-10-13 23:05:08,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1576. [2019-10-13 23:05:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2019-10-13 23:05:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2410 transitions. [2019-10-13 23:05:08,092 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2410 transitions. Word has length 81 [2019-10-13 23:05:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:08,095 INFO L462 AbstractCegarLoop]: Abstraction has 1576 states and 2410 transitions. [2019-10-13 23:05:08,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2410 transitions. [2019-10-13 23:05:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:05:08,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:08,111 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:08,111 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:08,112 INFO L82 PathProgramCache]: Analyzing trace with hash -607992935, now seen corresponding path program 1 times [2019-10-13 23:05:08,112 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:08,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15994673] [2019-10-13 23:05:08,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:08,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15994673] [2019-10-13 23:05:08,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:08,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:08,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398926781] [2019-10-13 23:05:08,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:08,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:08,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:08,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:08,412 INFO L87 Difference]: Start difference. First operand 1576 states and 2410 transitions. Second operand 10 states. [2019-10-13 23:05:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:10,128 INFO L93 Difference]: Finished difference Result 3683 states and 5633 transitions. [2019-10-13 23:05:10,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:05:10,129 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2019-10-13 23:05:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:10,153 INFO L225 Difference]: With dead ends: 3683 [2019-10-13 23:05:10,153 INFO L226 Difference]: Without dead ends: 2138 [2019-10-13 23:05:10,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:05:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2019-10-13 23:05:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2109. [2019-10-13 23:05:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2019-10-13 23:05:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 3195 transitions. [2019-10-13 23:05:10,341 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 3195 transitions. Word has length 128 [2019-10-13 23:05:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:10,342 INFO L462 AbstractCegarLoop]: Abstraction has 2109 states and 3195 transitions. [2019-10-13 23:05:10,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 3195 transitions. [2019-10-13 23:05:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:05:10,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:10,348 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:10,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:10,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1384021838, now seen corresponding path program 1 times [2019-10-13 23:05:10,349 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:10,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380829912] [2019-10-13 23:05:10,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:10,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380829912] [2019-10-13 23:05:10,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:10,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:10,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099396472] [2019-10-13 23:05:10,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:10,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:10,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:10,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:10,662 INFO L87 Difference]: Start difference. First operand 2109 states and 3195 transitions. Second operand 7 states. [2019-10-13 23:05:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:13,873 INFO L93 Difference]: Finished difference Result 6282 states and 9904 transitions. [2019-10-13 23:05:13,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:13,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-10-13 23:05:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:13,906 INFO L225 Difference]: With dead ends: 6282 [2019-10-13 23:05:13,907 INFO L226 Difference]: Without dead ends: 4204 [2019-10-13 23:05:13,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2019-10-13 23:05:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 4112. [2019-10-13 23:05:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4112 states. [2019-10-13 23:05:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 6343 transitions. [2019-10-13 23:05:14,212 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 6343 transitions. Word has length 129 [2019-10-13 23:05:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:14,213 INFO L462 AbstractCegarLoop]: Abstraction has 4112 states and 6343 transitions. [2019-10-13 23:05:14,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 6343 transitions. [2019-10-13 23:05:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:05:14,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:14,218 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:14,218 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:14,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1685858294, now seen corresponding path program 1 times [2019-10-13 23:05:14,219 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:14,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180409976] [2019-10-13 23:05:14,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:14,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:14,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:14,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180409976] [2019-10-13 23:05:14,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555554404] [2019-10-13 23:05:14,502 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 [2019-10-13 23:05:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:15,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 3277 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:15,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:15,132 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:15,335 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:15,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:15,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786479102] [2019-10-13 23:05:15,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:15,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:15,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:15,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:15,340 INFO L87 Difference]: Start difference. First operand 4112 states and 6343 transitions. Second operand 3 states. [2019-10-13 23:05:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:15,677 INFO L93 Difference]: Finished difference Result 10117 states and 16294 transitions. [2019-10-13 23:05:15,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:15,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-10-13 23:05:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:15,740 INFO L225 Difference]: With dead ends: 10117 [2019-10-13 23:05:15,740 INFO L226 Difference]: Without dead ends: 6036 [2019-10-13 23:05:15,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:15,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2019-10-13 23:05:16,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5815. [2019-10-13 23:05:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2019-10-13 23:05:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8950 transitions. [2019-10-13 23:05:16,159 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8950 transitions. Word has length 129 [2019-10-13 23:05:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:16,160 INFO L462 AbstractCegarLoop]: Abstraction has 5815 states and 8950 transitions. [2019-10-13 23:05:16,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8950 transitions. [2019-10-13 23:05:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 23:05:16,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:16,165 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:16,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:16,373 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:16,374 INFO L82 PathProgramCache]: Analyzing trace with hash -74748577, now seen corresponding path program 1 times [2019-10-13 23:05:16,374 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:16,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224911172] [2019-10-13 23:05:16,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:16,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:16,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:16,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224911172] [2019-10-13 23:05:16,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316430279] [2019-10-13 23:05:16,618 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 [2019-10-13 23:05:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:17,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:17,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:17,437 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:17,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:17,736 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:17,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 23:05:17,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620494694] [2019-10-13 23:05:17,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:17,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:17,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:17,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:17,739 INFO L87 Difference]: Start difference. First operand 5815 states and 8950 transitions. Second operand 6 states. [2019-10-13 23:05:19,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:19,059 INFO L93 Difference]: Finished difference Result 14570 states and 22867 transitions. [2019-10-13 23:05:19,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:19,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-13 23:05:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:19,135 INFO L225 Difference]: With dead ends: 14570 [2019-10-13 23:05:19,136 INFO L226 Difference]: Without dead ends: 8786 [2019-10-13 23:05:19,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2019-10-13 23:05:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 8742. [2019-10-13 23:05:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8742 states. [2019-10-13 23:05:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8742 states to 8742 states and 13159 transitions. [2019-10-13 23:05:19,755 INFO L78 Accepts]: Start accepts. Automaton has 8742 states and 13159 transitions. Word has length 130 [2019-10-13 23:05:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:19,756 INFO L462 AbstractCegarLoop]: Abstraction has 8742 states and 13159 transitions. [2019-10-13 23:05:19,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8742 states and 13159 transitions. [2019-10-13 23:05:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:05:19,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:19,762 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:19,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:19,973 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:19,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:19,974 INFO L82 PathProgramCache]: Analyzing trace with hash 399590605, now seen corresponding path program 1 times [2019-10-13 23:05:19,975 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:19,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043586816] [2019-10-13 23:05:19,976 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:19,976 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:19,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:05:20,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043586816] [2019-10-13 23:05:20,327 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:20,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:20,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287982938] [2019-10-13 23:05:20,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:20,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:20,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:20,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:20,331 INFO L87 Difference]: Start difference. First operand 8742 states and 13159 transitions. Second operand 10 states. [2019-10-13 23:05:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:24,057 INFO L93 Difference]: Finished difference Result 28720 states and 45113 transitions. [2019-10-13 23:05:24,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:24,057 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2019-10-13 23:05:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:24,205 INFO L225 Difference]: With dead ends: 28720 [2019-10-13 23:05:24,206 INFO L226 Difference]: Without dead ends: 20009 [2019-10-13 23:05:24,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2019-10-13 23:05:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 19652. [2019-10-13 23:05:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19652 states. [2019-10-13 23:05:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19652 states to 19652 states and 30347 transitions. [2019-10-13 23:05:26,043 INFO L78 Accepts]: Start accepts. Automaton has 19652 states and 30347 transitions. Word has length 135 [2019-10-13 23:05:26,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:26,044 INFO L462 AbstractCegarLoop]: Abstraction has 19652 states and 30347 transitions. [2019-10-13 23:05:26,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 19652 states and 30347 transitions. [2019-10-13 23:05:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 23:05:26,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:26,053 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2019-10-13 23:05:26,053 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:26,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2144386018, now seen corresponding path program 1 times [2019-10-13 23:05:26,054 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:26,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194625999] [2019-10-13 23:05:26,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:26,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:26,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:05:26,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194625999] [2019-10-13 23:05:26,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:26,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 23:05:26,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58311274] [2019-10-13 23:05:26,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 23:05:26,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:26,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 23:05:26,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:05:26,435 INFO L87 Difference]: Start difference. First operand 19652 states and 30347 transitions. Second operand 16 states.