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_spec1_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:27,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:27,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:27,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:27,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:27,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:27,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:27,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:27,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:27,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:27,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:27,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:27,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:27,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:27,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:27,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:27,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:27,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:27,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:27,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:27,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:27,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:27,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:27,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:27,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:27,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:27,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:27,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:27,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:27,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:27,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:27,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:27,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:27,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:27,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:27,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:27,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:27,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:27,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:27,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:27,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:27,857 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 23:02:27,871 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:27,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:27,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:27,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:27,873 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:27,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:27,873 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:27,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:27,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:27,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:27,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:27,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:27,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:27,875 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:27,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:27,875 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:27,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:27,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:27,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:27,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:27,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:27,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:27,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:27,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:27,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:27,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:27,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:27,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:27,878 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 23:02:28,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:28,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:28,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:28,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:28,208 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:28,209 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-10-13 23:02:28,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c36bb7c/a52580f153b845569f3c28d4a2e74749/FLAGab0880541 [2019-10-13 23:02:28,858 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:28,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-10-13 23:02:28,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c36bb7c/a52580f153b845569f3c28d4a2e74749/FLAGab0880541 [2019-10-13 23:02:29,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c36bb7c/a52580f153b845569f3c28d4a2e74749 [2019-10-13 23:02:29,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:29,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:29,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:29,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:29,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:29,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29, skipping insertion in model container [2019-10-13 23:02:29,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,125 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:29,214 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:29,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:30,023 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:30,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:30,200 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:30,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30 WrapperNode [2019-10-13 23:02:30,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:30,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:30,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:30,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:30,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:30,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:30,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:30,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:30,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (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 23:02:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:30,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:30,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:30,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:30,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:30,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:30,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:35,394 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:35,395 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:35,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:35 BoogieIcfgContainer [2019-10-13 23:02:35,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:35,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:35,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:35,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:35,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:29" (1/3) ... [2019-10-13 23:02:35,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60111ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:35, skipping insertion in model container [2019-10-13 23:02:35,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (2/3) ... [2019-10-13 23:02:35,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60111ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:35, skipping insertion in model container [2019-10-13 23:02:35,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:35" (3/3) ... [2019-10-13 23:02:35,408 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2019-10-13 23:02:35,417 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:35,428 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:35,440 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:35,487 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:35,487 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:35,487 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:35,487 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:35,487 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:35,487 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:35,487 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:35,488 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states. [2019-10-13 23:02:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 23:02:35,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:35,542 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:35,544 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:35,551 INFO L82 PathProgramCache]: Analyzing trace with hash -40033435, now seen corresponding path program 1 times [2019-10-13 23:02:35,561 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:35,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058841033] [2019-10-13 23:02:35,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:36,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058841033] [2019-10-13 23:02:36,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:36,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:02:36,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760549603] [2019-10-13 23:02:36,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:02:36,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:36,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:02:36,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:36,425 INFO L87 Difference]: Start difference. First operand 531 states. Second operand 8 states. [2019-10-13 23:02:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:36,643 INFO L93 Difference]: Finished difference Result 815 states and 1272 transitions. [2019-10-13 23:02:36,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:36,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-13 23:02:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:36,682 INFO L225 Difference]: With dead ends: 815 [2019-10-13 23:02:36,682 INFO L226 Difference]: Without dead ends: 445 [2019-10-13 23:02:36,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-13 23:02:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-10-13 23:02:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-10-13 23:02:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 617 transitions. [2019-10-13 23:02:36,848 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 617 transitions. Word has length 115 [2019-10-13 23:02:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:36,849 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 617 transitions. [2019-10-13 23:02:36,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:02:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 617 transitions. [2019-10-13 23:02:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:02:36,862 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:36,862 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:36,863 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1153139607, now seen corresponding path program 1 times [2019-10-13 23:02:36,864 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:36,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871660530] [2019-10-13 23:02:36,865 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,865 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:37,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871660530] [2019-10-13 23:02:37,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:37,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:37,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197771471] [2019-10-13 23:02:37,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:37,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:37,276 INFO L87 Difference]: Start difference. First operand 410 states and 617 transitions. Second operand 7 states. [2019-10-13 23:02:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:40,848 INFO L93 Difference]: Finished difference Result 1239 states and 1934 transitions. [2019-10-13 23:02:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:02:40,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-13 23:02:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:40,857 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 23:02:40,857 INFO L226 Difference]: Without dead ends: 882 [2019-10-13 23:02:40,860 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:02:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-10-13 23:02:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 855. [2019-10-13 23:02:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2019-10-13 23:02:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1336 transitions. [2019-10-13 23:02:40,925 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1336 transitions. Word has length 120 [2019-10-13 23:02:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:40,926 INFO L462 AbstractCegarLoop]: Abstraction has 855 states and 1336 transitions. [2019-10-13 23:02:40,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1336 transitions. [2019-10-13 23:02:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:02:40,930 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:40,930 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:40,930 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:40,931 INFO L82 PathProgramCache]: Analyzing trace with hash -93620798, now seen corresponding path program 1 times [2019-10-13 23:02:40,931 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:40,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921063499] [2019-10-13 23:02:40,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:40,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:40,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:41,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921063499] [2019-10-13 23:02:41,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:41,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:41,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285123307] [2019-10-13 23:02:41,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:41,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:41,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:41,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:41,167 INFO L87 Difference]: Start difference. First operand 855 states and 1336 transitions. Second operand 5 states. [2019-10-13 23:02:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,260 INFO L93 Difference]: Finished difference Result 1349 states and 2122 transitions. [2019-10-13 23:02:41,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:41,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-13 23:02:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,271 INFO L225 Difference]: With dead ends: 1349 [2019-10-13 23:02:41,271 INFO L226 Difference]: Without dead ends: 877 [2019-10-13 23:02:41,274 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-10-13 23:02:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 867. [2019-10-13 23:02:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2019-10-13 23:02:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1351 transitions. [2019-10-13 23:02:41,427 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1351 transitions. Word has length 124 [2019-10-13 23:02:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,428 INFO L462 AbstractCegarLoop]: Abstraction has 867 states and 1351 transitions. [2019-10-13 23:02:41,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1351 transitions. [2019-10-13 23:02:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:02:41,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,432 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:41,433 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1097035034, now seen corresponding path program 1 times [2019-10-13 23:02:41,433 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345364615] [2019-10-13 23:02:41,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:41,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345364615] [2019-10-13 23:02:41,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:41,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:02:41,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516802366] [2019-10-13 23:02:41,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:02:41,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:41,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:02:41,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:41,712 INFO L87 Difference]: Start difference. First operand 867 states and 1351 transitions. Second operand 8 states. [2019-10-13 23:02:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:44,925 INFO L93 Difference]: Finished difference Result 1828 states and 2856 transitions. [2019-10-13 23:02:44,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:44,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-13 23:02:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:44,935 INFO L225 Difference]: With dead ends: 1828 [2019-10-13 23:02:44,935 INFO L226 Difference]: Without dead ends: 1248 [2019-10-13 23:02:44,939 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:44,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2019-10-13 23:02:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1198. [2019-10-13 23:02:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-10-13 23:02:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1828 transitions. [2019-10-13 23:02:45,006 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1828 transitions. Word has length 128 [2019-10-13 23:02:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:45,006 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1828 transitions. [2019-10-13 23:02:45,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:02:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1828 transitions. [2019-10-13 23:02:45,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:02:45,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:45,011 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:45,011 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:45,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1289851637, now seen corresponding path program 1 times [2019-10-13 23:02:45,012 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:45,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086621201] [2019-10-13 23:02:45,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:45,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086621201] [2019-10-13 23:02:45,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:45,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:45,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241790785] [2019-10-13 23:02:45,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:45,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:45,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:45,290 INFO L87 Difference]: Start difference. First operand 1198 states and 1828 transitions. Second operand 7 states. [2019-10-13 23:02:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:45,526 INFO L93 Difference]: Finished difference Result 2253 states and 3521 transitions. [2019-10-13 23:02:45,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:45,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:02:45,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:45,538 INFO L225 Difference]: With dead ends: 2253 [2019-10-13 23:02:45,538 INFO L226 Difference]: Without dead ends: 1198 [2019-10-13 23:02:45,546 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:45,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2019-10-13 23:02:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1198. [2019-10-13 23:02:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-10-13 23:02:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1796 transitions. [2019-10-13 23:02:45,628 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1796 transitions. Word has length 131 [2019-10-13 23:02:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:45,629 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1796 transitions. [2019-10-13 23:02:45,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1796 transitions. [2019-10-13 23:02:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 23:02:45,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:45,633 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:45,634 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:45,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1713093847, now seen corresponding path program 1 times [2019-10-13 23:02:45,634 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:45,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951103936] [2019-10-13 23:02:45,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,872 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 23:02:45,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951103936] [2019-10-13 23:02:45,873 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:45,873 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:45,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491684436] [2019-10-13 23:02:45,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:45,874 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:45,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:45,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:45,875 INFO L87 Difference]: Start difference. First operand 1198 states and 1796 transitions. Second operand 7 states. [2019-10-13 23:02:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:48,859 INFO L93 Difference]: Finished difference Result 2122 states and 3191 transitions. [2019-10-13 23:02:48,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:48,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-13 23:02:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:48,871 INFO L225 Difference]: With dead ends: 2122 [2019-10-13 23:02:48,871 INFO L226 Difference]: Without dead ends: 1268 [2019-10-13 23:02:48,877 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2019-10-13 23:02:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1225. [2019-10-13 23:02:48,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2019-10-13 23:02:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1830 transitions. [2019-10-13 23:02:48,959 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1830 transitions. Word has length 133 [2019-10-13 23:02:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:48,961 INFO L462 AbstractCegarLoop]: Abstraction has 1225 states and 1830 transitions. [2019-10-13 23:02:48,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1830 transitions. [2019-10-13 23:02:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 23:02:48,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:48,964 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:48,965 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1455499114, now seen corresponding path program 1 times [2019-10-13 23:02:48,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:48,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285085306] [2019-10-13 23:02:48,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:48,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:48,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:02:49,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285085306] [2019-10-13 23:02:49,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173963464] [2019-10-13 23:02:49,624 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 23:02:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:50,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:02:50,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:50,502 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:50,935 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:50,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [26] total 33 [2019-10-13 23:02:50,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732892159] [2019-10-13 23:02:50,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:50,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:50,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:50,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 23:02:50,939 INFO L87 Difference]: Start difference. First operand 1225 states and 1830 transitions. Second operand 9 states. [2019-10-13 23:02:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:52,249 INFO L93 Difference]: Finished difference Result 1299 states and 1944 transitions. [2019-10-13 23:02:52,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:52,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-13 23:02:52,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:52,262 INFO L225 Difference]: With dead ends: 1299 [2019-10-13 23:02:52,263 INFO L226 Difference]: Without dead ends: 1282 [2019-10-13 23:02:52,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 23:02:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-13 23:02:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1252. [2019-10-13 23:02:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2019-10-13 23:02:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1869 transitions. [2019-10-13 23:02:52,364 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1869 transitions. Word has length 137 [2019-10-13 23:02:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:52,365 INFO L462 AbstractCegarLoop]: Abstraction has 1252 states and 1869 transitions. [2019-10-13 23:02:52,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1869 transitions. [2019-10-13 23:02:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:02:52,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:52,370 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:52,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:52,583 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:52,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1524031560, now seen corresponding path program 1 times [2019-10-13 23:02:52,584 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:52,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006309847] [2019-10-13 23:02:52,585 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:52,585 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:52,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:02:52,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006309847] [2019-10-13 23:02:52,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:52,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:02:52,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771461705] [2019-10-13 23:02:52,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:02:52,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:52,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:02:52,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:52,940 INFO L87 Difference]: Start difference. First operand 1252 states and 1869 transitions. Second operand 8 states. [2019-10-13 23:02:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:53,066 INFO L93 Difference]: Finished difference Result 1269 states and 1889 transitions. [2019-10-13 23:02:53,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:53,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-10-13 23:02:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:53,078 INFO L225 Difference]: With dead ends: 1269 [2019-10-13 23:02:53,078 INFO L226 Difference]: Without dead ends: 1252 [2019-10-13 23:02:53,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2019-10-13 23:02:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2019-10-13 23:02:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2019-10-13 23:02:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1864 transitions. [2019-10-13 23:02:53,257 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1864 transitions. Word has length 145 [2019-10-13 23:02:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:53,258 INFO L462 AbstractCegarLoop]: Abstraction has 1252 states and 1864 transitions. [2019-10-13 23:02:53,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:02:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1864 transitions. [2019-10-13 23:02:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:02:53,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:53,263 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:53,264 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:53,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1316825584, now seen corresponding path program 1 times [2019-10-13 23:02:53,265 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:53,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644023415] [2019-10-13 23:02:53,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:53,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:53,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:02:53,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644023415] [2019-10-13 23:02:53,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818986428] [2019-10-13 23:02:53,997 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 23:02:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:54,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:02:54,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:54,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:55,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:55,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:55,640 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:55,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [26] total 31 [2019-10-13 23:02:55,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491551820] [2019-10-13 23:02:55,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:55,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:55,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2019-10-13 23:02:55,643 INFO L87 Difference]: Start difference. First operand 1252 states and 1864 transitions. Second operand 7 states. [2019-10-13 23:02:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:55,737 INFO L93 Difference]: Finished difference Result 1293 states and 1915 transitions. [2019-10-13 23:02:55,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:55,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-13 23:02:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:55,748 INFO L225 Difference]: With dead ends: 1293 [2019-10-13 23:02:55,748 INFO L226 Difference]: Without dead ends: 1276 [2019-10-13 23:02:55,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 334 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:02:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2019-10-13 23:02:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1274. [2019-10-13 23:02:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2019-10-13 23:02:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1888 transitions. [2019-10-13 23:02:55,917 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1888 transitions. Word has length 160 [2019-10-13 23:02:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:55,917 INFO L462 AbstractCegarLoop]: Abstraction has 1274 states and 1888 transitions. [2019-10-13 23:02:55,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1888 transitions. [2019-10-13 23:02:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 23:02:55,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:55,923 INFO L380 BasicCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:56,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:56,135 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:56,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1251866636, now seen corresponding path program 1 times [2019-10-13 23:02:56,136 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:56,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173876014] [2019-10-13 23:02:56,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:56,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:56,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:02:56,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173876014] [2019-10-13 23:02:56,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506684472] [2019-10-13 23:02:56,408 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 23:02:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:57,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:02:57,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:57,308 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:57,703 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:02:58,100 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:02:58,594 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:02:59,010 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:02:59,409 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:02:59,820 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13