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_spec9_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:59,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:59,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:10:00,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:10:00,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:10:00,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:10:00,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:10:00,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:10:00,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:10:00,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:10:00,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:10:00,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:10:00,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:10:00,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:10:00,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:10:00,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:10:00,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:10:00,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:10:00,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:10:00,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:10:00,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:10:00,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:10:00,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:10:00,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:10:00,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:10:00,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:10:00,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:10:00,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:10:00,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:10:00,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:10:00,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:10:00,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:10:00,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:10:00,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:10:00,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:10:00,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:10:00,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:10:00,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:10:00,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:10:00,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:10:00,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:10:00,119 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 03:10:00,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:10:00,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:10:00,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:10:00,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:10:00,153 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:10:00,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:10:00,153 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:10:00,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:10:00,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:10:00,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:10:00,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:10:00,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:10:00,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:10:00,157 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:10:00,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:10:00,157 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:10:00,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:10:00,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:10:00,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:10:00,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:10:00,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:10:00,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:10:00,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:10:00,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:10:00,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:10:00,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:10:00,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:10:00,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:10:00,161 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 03:10:00,634 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:10:00,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:10:00,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:10:00,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:10:00,659 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:10:00,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2019-10-15 03:10:00,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3c90d5e/da606c78dc03495b8a9045238f78e4a3/FLAG1d9dc4da1 [2019-10-15 03:10:01,607 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:10:01,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2019-10-15 03:10:01,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3c90d5e/da606c78dc03495b8a9045238f78e4a3/FLAG1d9dc4da1 [2019-10-15 03:10:01,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3c90d5e/da606c78dc03495b8a9045238f78e4a3 [2019-10-15 03:10:01,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:10:01,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:10:01,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:10:01,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:10:01,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:10:01,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee9cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01, skipping insertion in model container [2019-10-15 03:10:01,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,767 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:10:01,881 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:10:02,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:10:02,832 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:10:02,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:10:03,043 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:10:03,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03 WrapperNode [2019-10-15 03:10:03,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:10:03,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:10:03,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:10:03,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:10:03,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (1/1) ... [2019-10-15 03:10:03,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:10:03,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:10:03,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:10:03,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:10:03,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (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 03:10:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:10:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:10:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:10:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:10:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:10:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:10:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:10:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:10:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:10:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:10:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:10:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:10:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:10:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:10:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:10:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:10:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:10:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:10:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:10:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:10:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:10:03,487 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:10:03,488 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:10:03,488 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:10:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:10:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:10:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:10:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:10:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:10:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:10:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:10:03,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:10:03,493 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:10:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:10:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:10:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:10:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:10:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:10:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:10:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:10:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:10:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:10:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:10:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:10:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:10:03,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:10:03,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:10:03,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:10:03,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:10:03,497 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:10:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:10:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:10:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:10:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:10:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:10:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:10:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:10:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:10:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:10:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:10:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:10:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:10:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:10:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:10:03,501 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:10:03,501 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:10:03,501 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:10:03,501 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:10:03,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:10:03,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:10:03,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:10:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:10:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:10:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:10:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:10:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:10:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:10:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:10:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:10:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:10:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:10:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:10:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:10:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:10:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:10:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:10:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:10:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:10:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:10:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:10:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:10:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:10:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:10:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:10:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:10:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:10:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:10:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:10:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:10:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:10:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:10:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:10:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:10:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:10:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:10:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:10:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:10:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:10:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:10:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:10:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:10:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:10:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:10:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:10:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:10:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:10:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:10:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:10:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:10:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:10:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:10:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:10:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:10:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:10:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:10:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:10:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:10:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:10:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:10:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:10:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:10:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:10:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:10:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:10:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:10:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:10:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:10:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:10:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:10:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:10:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:10:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:10:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:10:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:10:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:10:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:10:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:10:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:10:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:10:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:10:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:10:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:10:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:10:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:10:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:10:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:10:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:10:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:10:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:10:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:10:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:10:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:10:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:09,585 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:09,585 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:09,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:09 BoogieIcfgContainer [2019-10-15 03:10:09,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:09,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:09,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:09,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:09,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:10:01" (1/3) ... [2019-10-15 03:10:09,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3780ee27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:09, skipping insertion in model container [2019-10-15 03:10:09,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:03" (2/3) ... [2019-10-15 03:10:09,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3780ee27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:09, skipping insertion in model container [2019-10-15 03:10:09,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:09" (3/3) ... [2019-10-15 03:10:09,603 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2019-10-15 03:10:09,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:09,632 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:09,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:09,700 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:09,700 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:09,700 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:09,701 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:09,701 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:09,701 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:09,701 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:09,701 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states. [2019-10-15 03:10:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-15 03:10:09,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:09,767 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, 1, 1, 1] [2019-10-15 03:10:09,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1755162486, now seen corresponding path program 1 times [2019-10-15 03:10:09,789 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:09,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680738109] [2019-10-15 03:10:09,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:09,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:09,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:10,759 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 03:10:10,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680738109] [2019-10-15 03:10:10,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:10,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:10:10,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603794644] [2019-10-15 03:10:10,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:10:10,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:10:10,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:10:10,791 INFO L87 Difference]: Start difference. First operand 565 states. Second operand 9 states. [2019-10-15 03:10:19,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:19,157 INFO L93 Difference]: Finished difference Result 1388 states and 2117 transitions. [2019-10-15 03:10:19,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 03:10:19,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-15 03:10:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:19,230 INFO L225 Difference]: With dead ends: 1388 [2019-10-15 03:10:19,230 INFO L226 Difference]: Without dead ends: 971 [2019-10-15 03:10:19,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-15 03:10:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-10-15 03:10:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 939. [2019-10-15 03:10:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-10-15 03:10:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1428 transitions. [2019-10-15 03:10:19,463 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1428 transitions. Word has length 106 [2019-10-15 03:10:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:19,464 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1428 transitions. [2019-10-15 03:10:19,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:10:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1428 transitions. [2019-10-15 03:10:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:10:19,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:19,479 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:19,479 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash -536835171, now seen corresponding path program 1 times [2019-10-15 03:10:19,482 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:19,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108057343] [2019-10-15 03:10:19,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:20,146 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 03:10:20,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108057343] [2019-10-15 03:10:20,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:20,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:20,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013145711] [2019-10-15 03:10:20,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:20,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:20,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:20,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:20,151 INFO L87 Difference]: Start difference. First operand 939 states and 1428 transitions. Second operand 7 states. [2019-10-15 03:10:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:20,537 INFO L93 Difference]: Finished difference Result 1503 states and 2301 transitions. [2019-10-15 03:10:20,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:10:20,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-10-15 03:10:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:20,605 INFO L225 Difference]: With dead ends: 1503 [2019-10-15 03:10:20,609 INFO L226 Difference]: Without dead ends: 976 [2019-10-15 03:10:20,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2019-10-15 03:10:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 960. [2019-10-15 03:10:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-10-15 03:10:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1458 transitions. [2019-10-15 03:10:20,818 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1458 transitions. Word has length 111 [2019-10-15 03:10:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:20,820 INFO L462 AbstractCegarLoop]: Abstraction has 960 states and 1458 transitions. [2019-10-15 03:10:20,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1458 transitions. [2019-10-15 03:10:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:10:20,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:20,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:20,839 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:20,840 INFO L82 PathProgramCache]: Analyzing trace with hash 444756279, now seen corresponding path program 1 times [2019-10-15 03:10:20,840 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:20,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700429465] [2019-10-15 03:10:20,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:21,161 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 03:10:21,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700429465] [2019-10-15 03:10:21,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:21,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:21,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768157332] [2019-10-15 03:10:21,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:21,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:21,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:21,169 INFO L87 Difference]: Start difference. First operand 960 states and 1458 transitions. Second operand 7 states. [2019-10-15 03:10:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:21,287 INFO L93 Difference]: Finished difference Result 1532 states and 2339 transitions. [2019-10-15 03:10:21,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:10:21,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-15 03:10:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:21,297 INFO L225 Difference]: With dead ends: 1532 [2019-10-15 03:10:21,297 INFO L226 Difference]: Without dead ends: 991 [2019-10-15 03:10:21,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2019-10-15 03:10:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 963. [2019-10-15 03:10:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-10-15 03:10:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1461 transitions. [2019-10-15 03:10:21,378 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1461 transitions. Word has length 112 [2019-10-15 03:10:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:21,379 INFO L462 AbstractCegarLoop]: Abstraction has 963 states and 1461 transitions. [2019-10-15 03:10:21,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1461 transitions. [2019-10-15 03:10:21,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:10:21,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:21,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:21,383 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:21,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1911377751, now seen corresponding path program 1 times [2019-10-15 03:10:21,384 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:21,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786473837] [2019-10-15 03:10:21,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:21,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:21,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:21,836 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 03:10:21,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786473837] [2019-10-15 03:10:21,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:21,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:21,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817575734] [2019-10-15 03:10:21,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:21,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:21,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:21,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:21,840 INFO L87 Difference]: Start difference. First operand 963 states and 1461 transitions. Second operand 7 states. [2019-10-15 03:10:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:22,011 INFO L93 Difference]: Finished difference Result 1537 states and 2344 transitions. [2019-10-15 03:10:22,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:10:22,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-15 03:10:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:22,025 INFO L225 Difference]: With dead ends: 1537 [2019-10-15 03:10:22,025 INFO L226 Difference]: Without dead ends: 994 [2019-10-15 03:10:22,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-10-15 03:10:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 966. [2019-10-15 03:10:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2019-10-15 03:10:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1464 transitions. [2019-10-15 03:10:22,143 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1464 transitions. Word has length 112 [2019-10-15 03:10:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:22,144 INFO L462 AbstractCegarLoop]: Abstraction has 966 states and 1464 transitions. [2019-10-15 03:10:22,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1464 transitions. [2019-10-15 03:10:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 03:10:22,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:22,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:22,152 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:22,152 INFO L82 PathProgramCache]: Analyzing trace with hash 333463167, now seen corresponding path program 1 times [2019-10-15 03:10:22,153 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:22,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688354229] [2019-10-15 03:10:22,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:22,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:22,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:22,534 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 03:10:22,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688354229] [2019-10-15 03:10:22,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:22,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:22,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826037132] [2019-10-15 03:10:22,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:22,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:22,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:22,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:22,537 INFO L87 Difference]: Start difference. First operand 966 states and 1464 transitions. Second operand 7 states. [2019-10-15 03:10:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:29,922 INFO L93 Difference]: Finished difference Result 2072 states and 3161 transitions. [2019-10-15 03:10:29,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:10:29,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-15 03:10:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:29,937 INFO L225 Difference]: With dead ends: 2072 [2019-10-15 03:10:29,937 INFO L226 Difference]: Without dead ends: 1402 [2019-10-15 03:10:29,944 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:10:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-10-15 03:10:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1352. [2019-10-15 03:10:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2019-10-15 03:10:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2009 transitions. [2019-10-15 03:10:30,037 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2009 transitions. Word has length 116 [2019-10-15 03:10:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:30,039 INFO L462 AbstractCegarLoop]: Abstraction has 1352 states and 2009 transitions. [2019-10-15 03:10:30,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2009 transitions. [2019-10-15 03:10:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:10:30,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:30,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:30,048 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:30,048 INFO L82 PathProgramCache]: Analyzing trace with hash -356656398, now seen corresponding path program 1 times [2019-10-15 03:10:30,048 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:30,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763398140] [2019-10-15 03:10:30,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:30,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:30,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:30,263 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 03:10:30,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763398140] [2019-10-15 03:10:30,264 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:30,264 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:10:30,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239737734] [2019-10-15 03:10:30,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:10:30,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:30,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:10:30,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:10:30,267 INFO L87 Difference]: Start difference. First operand 1352 states and 2009 transitions. Second operand 9 states. [2019-10-15 03:10:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:30,639 INFO L93 Difference]: Finished difference Result 2636 states and 4022 transitions. [2019-10-15 03:10:30,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:10:30,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2019-10-15 03:10:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:30,659 INFO L225 Difference]: With dead ends: 2636 [2019-10-15 03:10:30,659 INFO L226 Difference]: Without dead ends: 1556 [2019-10-15 03:10:30,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:10:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2019-10-15 03:10:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2019-10-15 03:10:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2019-10-15 03:10:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2313 transitions. [2019-10-15 03:10:30,832 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2313 transitions. Word has length 118 [2019-10-15 03:10:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:30,832 INFO L462 AbstractCegarLoop]: Abstraction has 1556 states and 2313 transitions. [2019-10-15 03:10:30,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:10:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2313 transitions. [2019-10-15 03:10:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:10:30,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:30,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:30,836 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1523904988, now seen corresponding path program 1 times [2019-10-15 03:10:30,837 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:30,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097738195] [2019-10-15 03:10:30,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:30,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:30,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:31,141 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 03:10:31,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097738195] [2019-10-15 03:10:31,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:31,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:10:31,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908243654] [2019-10-15 03:10:31,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:31,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:10:31,144 INFO L87 Difference]: Start difference. First operand 1556 states and 2313 transitions. Second operand 6 states. [2019-10-15 03:10:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:37,295 INFO L93 Difference]: Finished difference Result 6381 states and 9869 transitions. [2019-10-15 03:10:37,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:10:37,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-15 03:10:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:37,334 INFO L225 Difference]: With dead ends: 6381 [2019-10-15 03:10:37,334 INFO L226 Difference]: Without dead ends: 4868 [2019-10-15 03:10:37,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:10:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2019-10-15 03:10:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4493. [2019-10-15 03:10:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4493 states. [2019-10-15 03:10:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 6836 transitions. [2019-10-15 03:10:37,614 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 6836 transitions. Word has length 119 [2019-10-15 03:10:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:37,615 INFO L462 AbstractCegarLoop]: Abstraction has 4493 states and 6836 transitions. [2019-10-15 03:10:37,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 6836 transitions. [2019-10-15 03:10:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:10:37,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:37,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:37,620 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1117673141, now seen corresponding path program 1 times [2019-10-15 03:10:37,622 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:37,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707899643] [2019-10-15 03:10:37,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:37,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:37,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:10:37,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707899643] [2019-10-15 03:10:37,805 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:37,805 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:37,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074451025] [2019-10-15 03:10:37,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:37,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:37,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:37,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:37,807 INFO L87 Difference]: Start difference. First operand 4493 states and 6836 transitions. Second operand 7 states.