/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_spec9_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:13:27,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:13:27,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:13:27,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:13:27,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:13:27,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:13:27,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:13:27,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:13:27,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:13:27,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:13:27,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:13:27,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:13:27,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:13:27,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:13:27,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:13:27,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:13:27,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:13:27,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:13:27,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:13:27,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:13:27,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:13:27,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:13:27,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:13:27,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:13:27,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:13:27,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:13:27,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:13:27,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:13:27,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:13:27,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:13:27,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:13:27,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:13:27,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:13:27,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:13:27,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:13:27,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:13:27,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:13:27,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:13:27,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:13:27,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:13:27,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:13:27,212 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 04:13:27,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:13:27,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:13:27,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:13:27,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:13:27,227 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:13:27,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:13:27,228 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:13:27,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:13:27,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:13:27,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:13:27,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:13:27,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:13:27,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:13:27,229 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:13:27,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:13:27,230 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:13:27,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:13:27,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:13:27,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:13:27,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:13:27,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:13:27,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:13:27,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:13:27,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:13:27,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:13:27,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:13:27,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:13:27,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:13:27,232 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 04:13:27,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:13:27,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:13:27,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:13:27,540 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:13:27,541 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:13:27,541 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-11-07 04:13:27,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc539659c/935f5e667e0749be944d092a6631d130/FLAG9bde8bac9 [2019-11-07 04:13:28,343 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:13:28,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-11-07 04:13:28,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc539659c/935f5e667e0749be944d092a6631d130/FLAG9bde8bac9 [2019-11-07 04:13:28,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc539659c/935f5e667e0749be944d092a6631d130 [2019-11-07 04:13:28,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:13:28,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:13:28,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:28,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:13:28,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:13:28,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:28" (1/1) ... [2019-11-07 04:13:28,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acb9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:28, skipping insertion in model container [2019-11-07 04:13:28,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:28" (1/1) ... [2019-11-07 04:13:28,497 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:13:28,583 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:13:29,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:29,294 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:13:29,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:29,540 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:13:29,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29 WrapperNode [2019-11-07 04:13:29,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:29,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:13:29,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:13:29,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:13:29,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (1/1) ... [2019-11-07 04:13:29,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:13:29,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:13:29,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:13:29,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:13:29,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (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 04:13:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:13:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:13:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:13:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:13:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:13:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:13:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:13:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:13:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:13:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:13:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:13:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:13:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:13:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:13:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:13:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:13:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:13:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:13:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:13:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:13:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:13:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:13:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:13:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:13:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:13:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:13:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:13:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:13:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:13:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:13:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:13:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:13:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:13:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:13:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:13:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:13:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:13:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 04:13:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:13:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 04:13:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:13:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:13:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:13:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:13:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:13:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:13:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:13:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:13:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:13:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:13:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:13:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:13:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:13:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:13:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:13:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:13:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:13:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:13:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:13:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:13:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:13:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:13:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:13:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:13:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:13:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:13:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:13:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:13:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:13:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:13:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:13:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:13:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:13:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:13:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:13:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:13:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:13:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:13:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:13:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:13:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:13:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:13:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:13:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:13:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:13:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:13:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:13:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:13:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:13:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:13:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:13:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:13:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:13:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 04:13:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 04:13:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:13:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:13:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:13:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:13:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:13:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:13:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:13:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:13:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:13:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:13:34,852 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:13:34,853 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:13:34,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:34 BoogieIcfgContainer [2019-11-07 04:13:34,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:13:34,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:13:34,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:13:34,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:13:34,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:13:28" (1/3) ... [2019-11-07 04:13:34,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261fc503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:34, skipping insertion in model container [2019-11-07 04:13:34,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:29" (2/3) ... [2019-11-07 04:13:34,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261fc503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:34, skipping insertion in model container [2019-11-07 04:13:34,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:34" (3/3) ... [2019-11-07 04:13:34,862 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2019-11-07 04:13:34,871 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:13:34,880 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:13:34,891 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:13:34,920 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:13:34,920 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:13:34,920 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:13:34,921 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:13:34,921 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:13:34,921 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:13:34,921 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:13:34,921 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:13:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2019-11-07 04:13:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-07 04:13:34,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:34,963 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:34,965 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash -834099698, now seen corresponding path program 1 times [2019-11-07 04:13:34,981 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:34,981 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951202891] [2019-11-07 04:13:34,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:35,515 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951202891] [2019-11-07 04:13:35,516 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:35,516 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:13:35,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245505043] [2019-11-07 04:13:35,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:13:35,525 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:35,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:13:35,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:13:35,545 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 2 states. [2019-11-07 04:13:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:35,671 INFO L93 Difference]: Finished difference Result 504 states and 739 transitions. [2019-11-07 04:13:35,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:13:35,674 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-11-07 04:13:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:35,710 INFO L225 Difference]: With dead ends: 504 [2019-11-07 04:13:35,710 INFO L226 Difference]: Without dead ends: 470 [2019-11-07 04:13:35,715 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 04:13:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-11-07 04:13:35,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-11-07 04:13:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-11-07 04:13:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 688 transitions. [2019-11-07 04:13:35,833 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 688 transitions. Word has length 74 [2019-11-07 04:13:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:35,836 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 688 transitions. [2019-11-07 04:13:35,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:13:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 688 transitions. [2019-11-07 04:13:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-07 04:13:35,841 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:35,841 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:35,842 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:35,842 INFO L82 PathProgramCache]: Analyzing trace with hash 201643010, now seen corresponding path program 1 times [2019-11-07 04:13:35,842 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:35,843 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281001154] [2019-11-07 04:13:35,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:36,063 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281001154] [2019-11-07 04:13:36,064 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:36,064 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:36,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105435079] [2019-11-07 04:13:36,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:36,067 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:36,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:36,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:36,071 INFO L87 Difference]: Start difference. First operand 470 states and 688 transitions. Second operand 3 states. [2019-11-07 04:13:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:36,213 INFO L93 Difference]: Finished difference Result 1301 states and 1956 transitions. [2019-11-07 04:13:36,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:36,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-11-07 04:13:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:36,228 INFO L225 Difference]: With dead ends: 1301 [2019-11-07 04:13:36,228 INFO L226 Difference]: Without dead ends: 873 [2019-11-07 04:13:36,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2019-11-07 04:13:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 856. [2019-11-07 04:13:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2019-11-07 04:13:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1283 transitions. [2019-11-07 04:13:36,401 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1283 transitions. Word has length 75 [2019-11-07 04:13:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:36,402 INFO L462 AbstractCegarLoop]: Abstraction has 856 states and 1283 transitions. [2019-11-07 04:13:36,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1283 transitions. [2019-11-07 04:13:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-07 04:13:36,406 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:36,407 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:36,407 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1954770670, now seen corresponding path program 1 times [2019-11-07 04:13:36,408 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:36,408 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335859170] [2019-11-07 04:13:36,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:36,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335859170] [2019-11-07 04:13:36,636 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:36,636 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:36,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300876232] [2019-11-07 04:13:36,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:36,637 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:36,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:36,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:36,638 INFO L87 Difference]: Start difference. First operand 856 states and 1283 transitions. Second operand 3 states. [2019-11-07 04:13:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:36,760 INFO L93 Difference]: Finished difference Result 2460 states and 3754 transitions. [2019-11-07 04:13:36,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:36,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-11-07 04:13:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:36,775 INFO L225 Difference]: With dead ends: 2460 [2019-11-07 04:13:36,775 INFO L226 Difference]: Without dead ends: 1647 [2019-11-07 04:13:36,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2019-11-07 04:13:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1629. [2019-11-07 04:13:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2019-11-07 04:13:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2482 transitions. [2019-11-07 04:13:36,874 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2482 transitions. Word has length 76 [2019-11-07 04:13:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:36,875 INFO L462 AbstractCegarLoop]: Abstraction has 1629 states and 2482 transitions. [2019-11-07 04:13:36,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2482 transitions. [2019-11-07 04:13:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:13:36,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:36,878 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:36,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash 467157188, now seen corresponding path program 1 times [2019-11-07 04:13:36,879 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:36,879 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549676795] [2019-11-07 04:13:36,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:37,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549676795] [2019-11-07 04:13:37,008 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:37,008 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:37,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329699454] [2019-11-07 04:13:37,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:37,009 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:37,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:37,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:37,010 INFO L87 Difference]: Start difference. First operand 1629 states and 2482 transitions. Second operand 3 states. [2019-11-07 04:13:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:37,174 INFO L93 Difference]: Finished difference Result 4779 states and 7392 transitions. [2019-11-07 04:13:37,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:37,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-11-07 04:13:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:37,209 INFO L225 Difference]: With dead ends: 4779 [2019-11-07 04:13:37,209 INFO L226 Difference]: Without dead ends: 3195 [2019-11-07 04:13:37,219 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2019-11-07 04:13:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2019-11-07 04:13:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2019-11-07 04:13:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4910 transitions. [2019-11-07 04:13:37,441 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4910 transitions. Word has length 77 [2019-11-07 04:13:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:37,442 INFO L462 AbstractCegarLoop]: Abstraction has 3176 states and 4910 transitions. [2019-11-07 04:13:37,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4910 transitions. [2019-11-07 04:13:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-07 04:13:37,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:37,594 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:37,595 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1595783408, now seen corresponding path program 1 times [2019-11-07 04:13:37,595 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:37,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289796536] [2019-11-07 04:13:37,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:37,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289796536] [2019-11-07 04:13:37,737 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:37,737 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:37,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893248115] [2019-11-07 04:13:37,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:37,738 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:37,740 INFO L87 Difference]: Start difference. First operand 3176 states and 4910 transitions. Second operand 3 states. [2019-11-07 04:13:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:38,006 INFO L93 Difference]: Finished difference Result 9418 states and 14821 transitions. [2019-11-07 04:13:38,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:38,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-11-07 04:13:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:38,062 INFO L225 Difference]: With dead ends: 9418 [2019-11-07 04:13:38,062 INFO L226 Difference]: Without dead ends: 6291 [2019-11-07 04:13:38,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2019-11-07 04:13:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6271. [2019-11-07 04:13:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6271 states. [2019-11-07 04:13:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9878 transitions. [2019-11-07 04:13:38,435 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9878 transitions. Word has length 78 [2019-11-07 04:13:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:38,438 INFO L462 AbstractCegarLoop]: Abstraction has 6271 states and 9878 transitions. [2019-11-07 04:13:38,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9878 transitions. [2019-11-07 04:13:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:13:38,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:38,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:38,446 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2071505530, now seen corresponding path program 1 times [2019-11-07 04:13:38,447 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:38,447 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172982560] [2019-11-07 04:13:38,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:38,667 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172982560] [2019-11-07 04:13:38,668 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:38,669 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:38,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380687747] [2019-11-07 04:13:38,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:38,669 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:38,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:38,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:38,670 INFO L87 Difference]: Start difference. First operand 6271 states and 9878 transitions. Second operand 3 states. [2019-11-07 04:13:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:38,870 INFO L93 Difference]: Finished difference Result 6679 states and 10543 transitions. [2019-11-07 04:13:38,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:38,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2019-11-07 04:13:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:38,939 INFO L225 Difference]: With dead ends: 6679 [2019-11-07 04:13:38,940 INFO L226 Difference]: Without dead ends: 6666 [2019-11-07 04:13:38,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2019-11-07 04:13:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6651. [2019-11-07 04:13:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6651 states. [2019-11-07 04:13:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 10506 transitions. [2019-11-07 04:13:39,380 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 10506 transitions. Word has length 79 [2019-11-07 04:13:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:39,381 INFO L462 AbstractCegarLoop]: Abstraction has 6651 states and 10506 transitions. [2019-11-07 04:13:39,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 10506 transitions. [2019-11-07 04:13:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 04:13:39,396 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:39,397 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:39,397 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1646137417, now seen corresponding path program 1 times [2019-11-07 04:13:39,398 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:39,398 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717029595] [2019-11-07 04:13:39,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-11-07 04:13:39,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717029595] [2019-11-07 04:13:39,809 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:39,810 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:13:39,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667630997] [2019-11-07 04:13:39,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:13:39,811 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:39,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:13:39,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:13:39,812 INFO L87 Difference]: Start difference. First operand 6651 states and 10506 transitions. Second operand 5 states. [2019-11-07 04:13:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:40,073 INFO L93 Difference]: Finished difference Result 13362 states and 21461 transitions. [2019-11-07 04:13:40,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:13:40,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2019-11-07 04:13:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:40,130 INFO L225 Difference]: With dead ends: 13362 [2019-11-07 04:13:40,130 INFO L226 Difference]: Without dead ends: 6753 [2019-11-07 04:13:40,180 INFO L630 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 [2019-11-07 04:13:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2019-11-07 04:13:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6721. [2019-11-07 04:13:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6721 states. [2019-11-07 04:13:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 10577 transitions. [2019-11-07 04:13:40,616 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 10577 transitions. Word has length 196 [2019-11-07 04:13:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:40,616 INFO L462 AbstractCegarLoop]: Abstraction has 6721 states and 10577 transitions. [2019-11-07 04:13:40,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:13:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 10577 transitions. [2019-11-07 04:13:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-11-07 04:13:40,628 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:40,629 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:40,629 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 116969209, now seen corresponding path program 1 times [2019-11-07 04:13:40,630 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:40,630 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124535689] [2019-11-07 04:13:40,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-07 04:13:41,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124535689] [2019-11-07 04:13:41,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718450482] [2019-11-07 04:13:41,028 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 [2019-11-07 04:13:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:42,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 4109 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-07 04:13:42,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:13:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-11-07 04:13:42,528 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:13:43,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:13:43,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:13:43,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:13:44,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:13:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-11-07 04:13:44,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [897907226] [2019-11-07 04:13:44,141 INFO L159 IcfgInterpreter]: Started Sifa with 195 locations of interest [2019-11-07 04:13:44,141 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:13:44,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:13:44,166 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:13:44,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs