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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:37,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:37,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:37,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:37,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:37,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:37,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:37,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:37,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:37,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:37,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:37,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:37,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:37,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:37,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:37,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:37,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:37,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:37,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:37,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:37,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:37,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:37,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:37,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:37,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:37,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:37,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:37,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:38,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:38,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:38,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:38,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:38,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:38,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:38,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:38,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:38,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:38,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:38,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:38,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:38,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:38,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:03:38,035 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:38,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:38,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:38,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:38,038 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:38,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:38,038 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:38,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:38,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:38,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:38,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:38,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:38,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:38,041 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:38,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:38,041 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:38,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:38,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:38,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:38,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:38,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:38,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:38,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:38,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:38,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:38,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:38,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:38,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:38,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:03:38,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:38,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:38,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:38,326 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:38,327 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:38,327 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-10-13 23:03:38,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedb62823/13caeb8f06344897a630ec187b360e49/FLAG95591c40c [2019-10-13 23:03:39,010 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:39,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-10-13 23:03:39,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedb62823/13caeb8f06344897a630ec187b360e49/FLAG95591c40c [2019-10-13 23:03:39,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedb62823/13caeb8f06344897a630ec187b360e49 [2019-10-13 23:03:39,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:39,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:39,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:39,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:39,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:39,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:39" (1/1) ... [2019-10-13 23:03:39,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7020f9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:39, skipping insertion in model container [2019-10-13 23:03:39,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:39" (1/1) ... [2019-10-13 23:03:39,245 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:39,331 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:40,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:40,113 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:40,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:40,296 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:40,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40 WrapperNode [2019-10-13 23:03:40,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:40,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:40,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:40,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:40,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... [2019-10-13 23:03:40,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:40,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:40,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:40,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:40,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:45,733 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:45,733 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:45,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:45 BoogieIcfgContainer [2019-10-13 23:03:45,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:45,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:45,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:45,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:45,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:39" (1/3) ... [2019-10-13 23:03:45,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a39b6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:45, skipping insertion in model container [2019-10-13 23:03:45,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:40" (2/3) ... [2019-10-13 23:03:45,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a39b6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:45, skipping insertion in model container [2019-10-13 23:03:45,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:45" (3/3) ... [2019-10-13 23:03:45,744 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2019-10-13 23:03:45,755 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:45,765 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:45,778 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:45,810 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:45,811 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:45,811 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:45,811 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:45,811 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:45,811 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:45,811 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:45,812 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2019-10-13 23:03:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 23:03:45,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:45,873 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:45,876 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash -197342042, now seen corresponding path program 1 times [2019-10-13 23:03:45,893 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:45,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974992361] [2019-10-13 23:03:45,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:45,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:45,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:03:46,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974992361] [2019-10-13 23:03:46,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:46,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:46,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486925142] [2019-10-13 23:03:46,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:46,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:46,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:46,532 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 2 states. [2019-10-13 23:03:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:46,611 INFO L93 Difference]: Finished difference Result 440 states and 662 transitions. [2019-10-13 23:03:46,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:46,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-13 23:03:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:46,637 INFO L225 Difference]: With dead ends: 440 [2019-10-13 23:03:46,637 INFO L226 Difference]: Without dead ends: 406 [2019-10-13 23:03:46,642 INFO L600 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 [2019-10-13 23:03:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-10-13 23:03:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2019-10-13 23:03:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-10-13 23:03:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 611 transitions. [2019-10-13 23:03:46,748 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 611 transitions. Word has length 92 [2019-10-13 23:03:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:46,751 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 611 transitions. [2019-10-13 23:03:46,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 611 transitions. [2019-10-13 23:03:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 23:03:46,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:46,774 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:46,777 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:46,778 INFO L82 PathProgramCache]: Analyzing trace with hash 194023073, now seen corresponding path program 1 times [2019-10-13 23:03:46,778 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:46,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386817068] [2019-10-13 23:03:46,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:46,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:46,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:03:47,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386817068] [2019-10-13 23:03:47,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:47,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:47,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699170103] [2019-10-13 23:03:47,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:47,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:47,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:47,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:47,137 INFO L87 Difference]: Start difference. First operand 406 states and 611 transitions. Second operand 8 states. [2019-10-13 23:03:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:47,359 INFO L93 Difference]: Finished difference Result 809 states and 1249 transitions. [2019-10-13 23:03:47,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:47,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-13 23:03:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:47,366 INFO L225 Difference]: With dead ends: 809 [2019-10-13 23:03:47,367 INFO L226 Difference]: Without dead ends: 445 [2019-10-13 23:03:47,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-13 23:03:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-10-13 23:03:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-10-13 23:03:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2019-10-13 23:03:47,424 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 93 [2019-10-13 23:03:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:47,425 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2019-10-13 23:03:47,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2019-10-13 23:03:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:03:47,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:47,433 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:47,433 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash -131924270, now seen corresponding path program 1 times [2019-10-13 23:03:47,435 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:47,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952303641] [2019-10-13 23:03:47,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:47,439 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:47,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:03:47,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952303641] [2019-10-13 23:03:47,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:47,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:47,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657723049] [2019-10-13 23:03:47,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:47,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:47,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:47,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:47,683 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand 7 states. [2019-10-13 23:03:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:51,337 INFO L93 Difference]: Finished difference Result 1261 states and 1954 transitions. [2019-10-13 23:03:51,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:03:51,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-13 23:03:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:51,346 INFO L225 Difference]: With dead ends: 1261 [2019-10-13 23:03:51,346 INFO L226 Difference]: Without dead ends: 893 [2019-10-13 23:03:51,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:03:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-10-13 23:03:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 866. [2019-10-13 23:03:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-10-13 23:03:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1345 transitions. [2019-10-13 23:03:51,424 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1345 transitions. Word has length 97 [2019-10-13 23:03:51,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:51,425 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1345 transitions. [2019-10-13 23:03:51,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1345 transitions. [2019-10-13 23:03:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 23:03:51,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:51,430 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:51,431 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:51,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1573335478, now seen corresponding path program 1 times [2019-10-13 23:03:51,432 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:51,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834044460] [2019-10-13 23:03:51,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:03:51,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834044460] [2019-10-13 23:03:51,614 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:51,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:03:51,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446845380] [2019-10-13 23:03:51,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:03:51,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:51,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:03:51,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:51,616 INFO L87 Difference]: Start difference. First operand 866 states and 1345 transitions. Second operand 5 states. [2019-10-13 23:03:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:51,690 INFO L93 Difference]: Finished difference Result 1371 states and 2142 transitions. [2019-10-13 23:03:51,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:51,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-13 23:03:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:51,698 INFO L225 Difference]: With dead ends: 1371 [2019-10-13 23:03:51,698 INFO L226 Difference]: Without dead ends: 888 [2019-10-13 23:03:51,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-10-13 23:03:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 878. [2019-10-13 23:03:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2019-10-13 23:03:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1360 transitions. [2019-10-13 23:03:51,768 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1360 transitions. Word has length 101 [2019-10-13 23:03:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:51,770 INFO L462 AbstractCegarLoop]: Abstraction has 878 states and 1360 transitions. [2019-10-13 23:03:51,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:03:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1360 transitions. [2019-10-13 23:03:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 23:03:51,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:51,774 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:51,774 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:51,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1632653326, now seen corresponding path program 1 times [2019-10-13 23:03:51,775 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:51,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605699246] [2019-10-13 23:03:51,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:03:52,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605699246] [2019-10-13 23:03:52,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:52,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:52,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850699407] [2019-10-13 23:03:52,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:52,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:52,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:52,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:52,095 INFO L87 Difference]: Start difference. First operand 878 states and 1360 transitions. Second operand 8 states. [2019-10-13 23:03:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:55,444 INFO L93 Difference]: Finished difference Result 1861 states and 2887 transitions. [2019-10-13 23:03:55,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:55,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-13 23:03:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:55,460 INFO L225 Difference]: With dead ends: 1861 [2019-10-13 23:03:55,460 INFO L226 Difference]: Without dead ends: 1270 [2019-10-13 23:03:55,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2019-10-13 23:03:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1220. [2019-10-13 23:03:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-13 23:03:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1848 transitions. [2019-10-13 23:03:55,537 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1848 transitions. Word has length 105 [2019-10-13 23:03:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:55,538 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1848 transitions. [2019-10-13 23:03:55,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1848 transitions. [2019-10-13 23:03:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 23:03:55,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:55,542 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:55,543 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash -421968763, now seen corresponding path program 1 times [2019-10-13 23:03:55,543 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:55,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792291710] [2019-10-13 23:03:55,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:03:55,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792291710] [2019-10-13 23:03:55,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:55,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:55,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080648666] [2019-10-13 23:03:55,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:55,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:55,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:55,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:55,712 INFO L87 Difference]: Start difference. First operand 1220 states and 1848 transitions. Second operand 7 states. [2019-10-13 23:03:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:55,999 INFO L93 Difference]: Finished difference Result 2297 states and 3563 transitions. [2019-10-13 23:03:56,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:56,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-13 23:03:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:56,026 INFO L225 Difference]: With dead ends: 2297 [2019-10-13 23:03:56,026 INFO L226 Difference]: Without dead ends: 1220 [2019-10-13 23:03:56,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:56,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2019-10-13 23:03:56,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2019-10-13 23:03:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-13 23:03:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1816 transitions. [2019-10-13 23:03:56,125 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1816 transitions. Word has length 108 [2019-10-13 23:03:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:56,126 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1816 transitions. [2019-10-13 23:03:56,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1816 transitions. [2019-10-13 23:03:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:03:56,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:56,132 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:56,132 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 194645655, now seen corresponding path program 1 times [2019-10-13 23:03:56,133 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:56,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958182338] [2019-10-13 23:03:56,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:56,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:56,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:03:56,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958182338] [2019-10-13 23:03:56,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:56,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:56,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288010256] [2019-10-13 23:03:56,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:56,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:56,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:56,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:56,353 INFO L87 Difference]: Start difference. First operand 1220 states and 1816 transitions. Second operand 7 states. [2019-10-13 23:03:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:59,435 INFO L93 Difference]: Finished difference Result 2166 states and 3233 transitions. [2019-10-13 23:03:59,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:59,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-13 23:03:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:59,445 INFO L225 Difference]: With dead ends: 2166 [2019-10-13 23:03:59,445 INFO L226 Difference]: Without dead ends: 1290 [2019-10-13 23:03:59,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-10-13 23:03:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1247. [2019-10-13 23:03:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-10-13 23:03:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1850 transitions. [2019-10-13 23:03:59,506 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1850 transitions. Word has length 110 [2019-10-13 23:03:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:59,506 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 1850 transitions. [2019-10-13 23:03:59,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1850 transitions. [2019-10-13 23:03:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:03:59,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:59,510 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:59,510 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -784905419, now seen corresponding path program 1 times [2019-10-13 23:03:59,510 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:59,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273263144] [2019-10-13 23:03:59,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:59,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:59,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:03:59,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273263144] [2019-10-13 23:03:59,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:59,648 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:59,648 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266281646] [2019-10-13 23:03:59,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:59,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:59,649 INFO L87 Difference]: Start difference. First operand 1247 states and 1850 transitions. Second operand 4 states. [2019-10-13 23:04:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:01,130 INFO L93 Difference]: Finished difference Result 3781 states and 5741 transitions. [2019-10-13 23:04:01,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:01,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:01,148 INFO L225 Difference]: With dead ends: 3781 [2019-10-13 23:04:01,148 INFO L226 Difference]: Without dead ends: 2576 [2019-10-13 23:04:01,156 INFO L600 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 [2019-10-13 23:04:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2019-10-13 23:04:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2431. [2019-10-13 23:04:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-10-13 23:04:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3664 transitions. [2019-10-13 23:04:01,289 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3664 transitions. Word has length 117 [2019-10-13 23:04:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:01,290 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3664 transitions. [2019-10-13 23:04:01,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3664 transitions. [2019-10-13 23:04:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:01,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:01,294 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:01,295 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:01,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1436453714, now seen corresponding path program 1 times [2019-10-13 23:04:01,295 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:01,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111596699] [2019-10-13 23:04:01,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:04:01,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111596699] [2019-10-13 23:04:01,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:01,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:01,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123814985] [2019-10-13 23:04:01,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:01,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:01,478 INFO L87 Difference]: Start difference. First operand 2431 states and 3664 transitions. Second operand 4 states. [2019-10-13 23:04:03,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:03,112 INFO L93 Difference]: Finished difference Result 7255 states and 11187 transitions. [2019-10-13 23:04:03,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:03,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:04:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:03,148 INFO L225 Difference]: With dead ends: 7255 [2019-10-13 23:04:03,148 INFO L226 Difference]: Without dead ends: 4867 [2019-10-13 23:04:03,163 INFO L600 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 [2019-10-13 23:04:03,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2019-10-13 23:04:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4689. [2019-10-13 23:04:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2019-10-13 23:04:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 7158 transitions. [2019-10-13 23:04:03,438 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 7158 transitions. Word has length 118 [2019-10-13 23:04:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:03,439 INFO L462 AbstractCegarLoop]: Abstraction has 4689 states and 7158 transitions. [2019-10-13 23:04:03,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 7158 transitions. [2019-10-13 23:04:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 23:04:03,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:03,442 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:03,443 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1704539365, now seen corresponding path program 1 times [2019-10-13 23:04:03,443 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:03,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864032967] [2019-10-13 23:04:03,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:04:03,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864032967] [2019-10-13 23:04:03,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:03,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:03,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990249922] [2019-10-13 23:04:03,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:03,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:03,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:03,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:03,607 INFO L87 Difference]: Start difference. First operand 4689 states and 7158 transitions. Second operand 4 states. [2019-10-13 23:04:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:05,319 INFO L93 Difference]: Finished difference Result 14111 states and 22271 transitions. [2019-10-13 23:04:05,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:05,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-13 23:04:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:05,386 INFO L225 Difference]: With dead ends: 14111 [2019-10-13 23:04:05,386 INFO L226 Difference]: Without dead ends: 9467 [2019-10-13 23:04:05,409 INFO L600 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 [2019-10-13 23:04:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2019-10-13 23:04:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9224. [2019-10-13 23:04:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9224 states. [2019-10-13 23:04:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 14364 transitions. [2019-10-13 23:04:05,900 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 14364 transitions. Word has length 116 [2019-10-13 23:04:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:05,901 INFO L462 AbstractCegarLoop]: Abstraction has 9224 states and 14364 transitions. [2019-10-13 23:04:05,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 14364 transitions. [2019-10-13 23:04:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:04:05,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:05,906 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:05,906 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:05,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1302387024, now seen corresponding path program 1 times [2019-10-13 23:04:05,907 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:05,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310533499] [2019-10-13 23:04:05,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:05,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:05,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:04:06,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310533499] [2019-10-13 23:04:06,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:06,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:06,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706281586] [2019-10-13 23:04:06,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:06,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:06,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:06,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:06,079 INFO L87 Difference]: Start difference. First operand 9224 states and 14364 transitions. Second operand 4 states. [2019-10-13 23:04:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:08,358 INFO L93 Difference]: Finished difference Result 27878 states and 45768 transitions. [2019-10-13 23:04:08,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:08,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:08,587 INFO L225 Difference]: With dead ends: 27878 [2019-10-13 23:04:08,588 INFO L226 Difference]: Without dead ends: 18703 [2019-10-13 23:04:08,947 INFO L600 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 [2019-10-13 23:04:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18703 states. [2019-10-13 23:04:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18703 to 18331. [2019-10-13 23:04:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18331 states. [2019-10-13 23:04:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 29522 transitions. [2019-10-13 23:04:10,662 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 29522 transitions. Word has length 117 [2019-10-13 23:04:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:10,662 INFO L462 AbstractCegarLoop]: Abstraction has 18331 states and 29522 transitions. [2019-10-13 23:04:10,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 29522 transitions. [2019-10-13 23:04:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:10,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:10,671 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:10,671 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:10,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:10,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1364332793, now seen corresponding path program 1 times [2019-10-13 23:04:10,672 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:10,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982803409] [2019-10-13 23:04:10,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat