/usr/bin/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_spec2_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:10:46,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:10:46,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:10:46,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:10:46,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:10:46,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:10:46,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:10:46,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:10:46,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:10:46,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:10:46,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:10:46,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:10:46,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:10:46,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:10:46,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:10:46,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:10:46,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:10:46,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:10:46,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:10:46,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:10:46,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:10:46,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:10:46,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:10:46,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:10:46,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:10:46,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:10:46,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:10:46,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:10:46,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:10:46,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:10:46,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:10:46,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:10:46,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:10:46,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:10:46,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:10:46,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:10:46,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:10:46,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:10:46,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:10:46,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:10:46,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:10:46,509 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 [2019-11-07 04:10:46,531 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:10:46,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:10:46,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:10:46,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:10:46,533 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:10:46,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:10:46,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:10:46,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:10:46,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:10:46,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:10:46,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:10:46,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:10:46,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:10:46,535 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:10:46,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:10:46,536 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:10:46,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:10:46,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:10:46,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:10:46,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:10:46,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:10:46,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:10:46,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:10:46,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:10:46,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:10:46,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:10:46,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:10:46,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:10:46,541 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 [2019-11-07 04:10:46,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:10:46,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:10:46,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:10:46,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:10:46,864 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:10:46,865 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2019-11-07 04:10:46,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf529a7/c313bc2bb3c64dacb55a6b8d9d6a961d/FLAG89652d1b4 [2019-11-07 04:10:47,561 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:10:47,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2019-11-07 04:10:47,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf529a7/c313bc2bb3c64dacb55a6b8d9d6a961d/FLAG89652d1b4 [2019-11-07 04:10:47,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf529a7/c313bc2bb3c64dacb55a6b8d9d6a961d [2019-11-07 04:10:47,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:10:47,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:10:47,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:47,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:10:47,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:10:47,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:47" (1/1) ... [2019-11-07 04:10:47,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee79b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:47, skipping insertion in model container [2019-11-07 04:10:47,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:47" (1/1) ... [2019-11-07 04:10:47,770 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:10:47,859 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:10:48,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:48,638 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:10:48,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:48,847 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:10:48,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48 WrapperNode [2019-11-07 04:10:48,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:48,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:10:48,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:10:48,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:10:48,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:48,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:48,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:48,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:48,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:49,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:49,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (1/1) ... [2019-11-07 04:10:49,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:10:49,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:10:49,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:10:49,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:10:49,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (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 [2019-11-07 04:10:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:10:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:10:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:10:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:10:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:10:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:10:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:10:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:10:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:10:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:10:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:10:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:10:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:10:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:10:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:10:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:10:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:10:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:10:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:10:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:10:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:10:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:10:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:10:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:10:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:10:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:10:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:10:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:10:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:10:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:10:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:10:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:10:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:10:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:10:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:10:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:10:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:10:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:10:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:10:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:10:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:10:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:10:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:10:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:10:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:10:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:10:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:10:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:10:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:10:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:10:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:10:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:10:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:10:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:10:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:10:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:10:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:10:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:10:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:10:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:10:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:10:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:10:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:10:49,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:10:49,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:10:49,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:10:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:10:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:10:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:10:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:10:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:10:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:10:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:10:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:10:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:10:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:10:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:10:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:10:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:10:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:10:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:10:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:10:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:10:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:10:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:10:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:10:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:10:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:10:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:10:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:10:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:10:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:10:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:10:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:10:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:10:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:10:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:10:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:10:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:10:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:10:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:10:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:10:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:10:49,248 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:10:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:10:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:10:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:10:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:10:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:10:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:10:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:10:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:10:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:10:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:10:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:10:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:10:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:10:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:10:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:10:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:10:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:10:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:10:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:10:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:10:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:10:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:10:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:10:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:10:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:10:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:10:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:10:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:10:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:10:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:10:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:10:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:10:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:10:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:10:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:10:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:10:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:10:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:10:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:10:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:10:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:10:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:10:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:10:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:10:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:10:54,987 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:10:54,987 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:10:54,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:54 BoogieIcfgContainer [2019-11-07 04:10:54,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:10:54,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:10:54,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:10:54,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:10:54,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:10:47" (1/3) ... [2019-11-07 04:10:54,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd0e7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:54, skipping insertion in model container [2019-11-07 04:10:54,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:48" (2/3) ... [2019-11-07 04:10:54,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd0e7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:54, skipping insertion in model container [2019-11-07 04:10:54,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:54" (3/3) ... [2019-11-07 04:10:54,997 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2019-11-07 04:10:55,007 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:10:55,016 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:10:55,028 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:10:55,059 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:10:55,059 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:10:55,059 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:10:55,059 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:10:55,059 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:10:55,059 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:10:55,060 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:10:55,060 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:10:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states. [2019-11-07 04:10:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:10:55,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:55,125 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:10:55,129 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:55,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1500681736, now seen corresponding path program 1 times [2019-11-07 04:10:55,146 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:55,147 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275894950] [2019-11-07 04:10:55,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:55,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275894950] [2019-11-07 04:10:55,867 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:55,868 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:10:55,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323091110] [2019-11-07 04:10:55,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:10:55,875 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:55,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:10:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:55,895 INFO L87 Difference]: Start difference. First operand 576 states. Second operand 2 states. [2019-11-07 04:10:56,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:56,011 INFO L93 Difference]: Finished difference Result 479 states and 710 transitions. [2019-11-07 04:10:56,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:10:56,013 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-11-07 04:10:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:56,056 INFO L225 Difference]: With dead ends: 479 [2019-11-07 04:10:56,056 INFO L226 Difference]: Without dead ends: 445 [2019-11-07 04:10:56,062 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-11-07 04:10:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-11-07 04:10:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-11-07 04:10:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 659 transitions. [2019-11-07 04:10:56,172 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 659 transitions. Word has length 112 [2019-11-07 04:10:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:56,175 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 659 transitions. [2019-11-07 04:10:56,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:10:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 659 transitions. [2019-11-07 04:10:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:10:56,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:56,185 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:10:56,186 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash 757640429, now seen corresponding path program 1 times [2019-11-07 04:10:56,187 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:56,187 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287495940] [2019-11-07 04:10:56,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:56,526 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287495940] [2019-11-07 04:10:56,526 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:56,526 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:56,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69335475] [2019-11-07 04:10:56,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:56,529 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:56,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:56,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:56,530 INFO L87 Difference]: Start difference. First operand 445 states and 659 transitions. Second operand 7 states. [2019-11-07 04:11:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:00,996 INFO L93 Difference]: Finished difference Result 1262 states and 1914 transitions. [2019-11-07 04:11:00,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:11:00,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 04:11:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:01,004 INFO L225 Difference]: With dead ends: 1262 [2019-11-07 04:11:01,004 INFO L226 Difference]: Without dead ends: 859 [2019-11-07 04:11:01,016 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:11:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2019-11-07 04:11:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 834. [2019-11-07 04:11:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2019-11-07 04:11:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1261 transitions. [2019-11-07 04:11:01,133 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1261 transitions. Word has length 113 [2019-11-07 04:11:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:01,137 INFO L462 AbstractCegarLoop]: Abstraction has 834 states and 1261 transitions. [2019-11-07 04:11:01,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:11:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1261 transitions. [2019-11-07 04:11:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:11:01,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:01,152 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:01,152 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1189512345, now seen corresponding path program 1 times [2019-11-07 04:11:01,153 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:01,153 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683867539] [2019-11-07 04:11:01,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:01,412 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683867539] [2019-11-07 04:11:01,413 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:01,413 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:01,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572540389] [2019-11-07 04:11:01,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:01,416 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:01,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:01,416 INFO L87 Difference]: Start difference. First operand 834 states and 1261 transitions. Second operand 4 states. [2019-11-07 04:11:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:03,589 INFO L93 Difference]: Finished difference Result 2486 states and 3856 transitions. [2019-11-07 04:11:03,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:03,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-11-07 04:11:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:03,606 INFO L225 Difference]: With dead ends: 2486 [2019-11-07 04:11:03,606 INFO L226 Difference]: Without dead ends: 1694 [2019-11-07 04:11:03,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2019-11-07 04:11:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1596. [2019-11-07 04:11:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1596 states. [2019-11-07 04:11:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2461 transitions. [2019-11-07 04:11:03,718 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2461 transitions. Word has length 117 [2019-11-07 04:11:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:03,719 INFO L462 AbstractCegarLoop]: Abstraction has 1596 states and 2461 transitions. [2019-11-07 04:11:03,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2461 transitions. [2019-11-07 04:11:03,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:11:03,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:03,723 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:03,723 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:03,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1781138496, now seen corresponding path program 1 times [2019-11-07 04:11:03,724 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:03,724 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914023149] [2019-11-07 04:11:03,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:03,882 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914023149] [2019-11-07 04:11:03,882 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:03,882 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:03,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635136828] [2019-11-07 04:11:03,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:03,883 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:03,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:03,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:03,884 INFO L87 Difference]: Start difference. First operand 1596 states and 2461 transitions. Second operand 4 states. [2019-11-07 04:11:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:05,952 INFO L93 Difference]: Finished difference Result 4719 states and 7438 transitions. [2019-11-07 04:11:05,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:05,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-07 04:11:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:05,995 INFO L225 Difference]: With dead ends: 4719 [2019-11-07 04:11:05,995 INFO L226 Difference]: Without dead ends: 3166 [2019-11-07 04:11:06,009 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2019-11-07 04:11:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3045. [2019-11-07 04:11:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3045 states. [2019-11-07 04:11:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4762 transitions. [2019-11-07 04:11:06,331 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4762 transitions. Word has length 118 [2019-11-07 04:11:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:06,334 INFO L462 AbstractCegarLoop]: Abstraction has 3045 states and 4762 transitions. [2019-11-07 04:11:06,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4762 transitions. [2019-11-07 04:11:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:06,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:06,341 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:06,341 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:06,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:06,342 INFO L82 PathProgramCache]: Analyzing trace with hash 617969851, now seen corresponding path program 1 times [2019-11-07 04:11:06,342 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:06,343 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139932964] [2019-11-07 04:11:06,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:06,587 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139932964] [2019-11-07 04:11:06,588 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:06,588 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:06,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425272919] [2019-11-07 04:11:06,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:06,590 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:06,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:06,591 INFO L87 Difference]: Start difference. First operand 3045 states and 4762 transitions. Second operand 4 states. [2019-11-07 04:11:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:09,038 INFO L93 Difference]: Finished difference Result 9118 states and 14678 transitions. [2019-11-07 04:11:09,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:09,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-07 04:11:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:09,084 INFO L225 Difference]: With dead ends: 9118 [2019-11-07 04:11:09,084 INFO L226 Difference]: Without dead ends: 6118 [2019-11-07 04:11:09,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2019-11-07 04:11:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 5952. [2019-11-07 04:11:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5952 states. [2019-11-07 04:11:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 9480 transitions. [2019-11-07 04:11:09,473 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 9480 transitions. Word has length 119 [2019-11-07 04:11:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:09,475 INFO L462 AbstractCegarLoop]: Abstraction has 5952 states and 9480 transitions. [2019-11-07 04:11:09,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 9480 transitions. [2019-11-07 04:11:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:11:09,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:09,483 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:09,484 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:09,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1975888482, now seen corresponding path program 1 times [2019-11-07 04:11:09,486 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:09,486 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025877003] [2019-11-07 04:11:09,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:09,730 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025877003] [2019-11-07 04:11:09,731 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:09,731 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:09,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086201982] [2019-11-07 04:11:09,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:09,732 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:09,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:09,733 INFO L87 Difference]: Start difference. First operand 5952 states and 9480 transitions. Second operand 4 states. [2019-11-07 04:11:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:12,108 INFO L93 Difference]: Finished difference Result 17941 states and 29889 transitions. [2019-11-07 04:11:12,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:12,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:11:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:12,211 INFO L225 Difference]: With dead ends: 17941 [2019-11-07 04:11:12,211 INFO L226 Difference]: Without dead ends: 12038 [2019-11-07 04:11:12,247 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12038 states. [2019-11-07 04:11:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12038 to 11783. [2019-11-07 04:11:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11783 states. [2019-11-07 04:11:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11783 states to 11783 states and 19326 transitions. [2019-11-07 04:11:12,990 INFO L78 Accepts]: Start accepts. Automaton has 11783 states and 19326 transitions. Word has length 120 [2019-11-07 04:11:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:12,991 INFO L462 AbstractCegarLoop]: Abstraction has 11783 states and 19326 transitions. [2019-11-07 04:11:12,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 11783 states and 19326 transitions. [2019-11-07 04:11:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:11:12,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:12,995 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:12,996 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:12,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:12,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1121696989, now seen corresponding path program 1 times [2019-11-07 04:11:12,997 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:12,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915404382] [2019-11-07 04:11:12,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:13,166 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915404382] [2019-11-07 04:11:13,166 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:13,166 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:13,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345028207] [2019-11-07 04:11:13,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:13,167 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:13,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:13,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:13,168 INFO L87 Difference]: Start difference. First operand 11783 states and 19326 transitions. Second operand 4 states. [2019-11-07 04:11:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:16,081 INFO L93 Difference]: Finished difference Result 35664 states and 62953 transitions. [2019-11-07 04:11:16,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:16,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-07 04:11:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:16,235 INFO L225 Difference]: With dead ends: 35664 [2019-11-07 04:11:16,235 INFO L226 Difference]: Without dead ends: 23926 [2019-11-07 04:11:16,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23926 states. [2019-11-07 04:11:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23926 to 23344. [2019-11-07 04:11:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23344 states.