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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:42,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:42,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:42,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:42,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:42,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:42,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:42,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:42,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:42,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:42,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:42,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:42,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:42,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:42,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:42,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:42,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:42,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:42,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:42,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:42,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:42,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:42,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:42,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:42,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:42,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:42,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:42,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:42,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:42,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:42,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:42,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:42,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:42,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:42,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:42,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:42,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:42,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:42,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:42,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:42,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:42,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:10:42,685 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:42,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:42,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:42,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:42,689 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:42,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:42,689 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:42,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:42,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:42,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:42,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:42,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:42,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:42,692 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:42,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:42,692 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:42,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:42,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:42,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:42,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:42,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:42,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:42,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:42,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:42,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:42,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:42,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:42,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:42,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:10:42,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:42,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:43,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:43,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:43,003 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:43,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-15 01:10:43,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406ca68a7/da305dd423b64dffb6920f570a376524/FLAGc3f12e575 [2019-10-15 01:10:43,743 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:43,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-15 01:10:43,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406ca68a7/da305dd423b64dffb6920f570a376524/FLAGc3f12e575 [2019-10-15 01:10:43,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406ca68a7/da305dd423b64dffb6920f570a376524 [2019-10-15 01:10:43,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:43,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:43,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:43,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:43,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:43,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:43" (1/1) ... [2019-10-15 01:10:43,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45859c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:43, skipping insertion in model container [2019-10-15 01:10:43,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:43" (1/1) ... [2019-10-15 01:10:43,966 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:44,054 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:44,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:44,813 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:44,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:45,059 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:45,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45 WrapperNode [2019-10-15 01:10:45,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:45,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:45,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:45,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:45,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... [2019-10-15 01:10:45,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:45,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:45,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:45,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:45,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:10:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:45,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:45,353 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:10:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:10:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:10:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:10:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:10:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:45,363 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:10:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:10:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:10:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:10:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:10:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:10:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:48,183 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:48,184 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:48,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:48 BoogieIcfgContainer [2019-10-15 01:10:48,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:48,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:48,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:48,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:43" (1/3) ... [2019-10-15 01:10:48,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387563a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:48, skipping insertion in model container [2019-10-15 01:10:48,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:45" (2/3) ... [2019-10-15 01:10:48,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387563a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:48, skipping insertion in model container [2019-10-15 01:10:48,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:48" (3/3) ... [2019-10-15 01:10:48,194 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-10-15 01:10:48,204 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:48,215 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:48,227 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:48,267 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:48,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:48,268 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:48,268 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:48,268 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:48,268 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:48,268 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:48,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states. [2019-10-15 01:10:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:10:48,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,337 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] [2019-10-15 01:10:48,339 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1927707397, now seen corresponding path program 1 times [2019-10-15 01:10:48,356 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762350804] [2019-10-15 01:10:48,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:49,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762350804] [2019-10-15 01:10:49,151 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:49,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:49,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582161393] [2019-10-15 01:10:49,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:49,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:49,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:49,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:49,176 INFO L87 Difference]: Start difference. First operand 825 states. Second operand 7 states. [2019-10-15 01:10:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:49,519 INFO L93 Difference]: Finished difference Result 1315 states and 2110 transitions. [2019-10-15 01:10:49,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:49,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-15 01:10:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:49,565 INFO L225 Difference]: With dead ends: 1315 [2019-10-15 01:10:49,565 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:10:49,582 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:49,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:10:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2019-10-15 01:10:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-10-15 01:10:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1050 transitions. [2019-10-15 01:10:49,775 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1050 transitions. Word has length 93 [2019-10-15 01:10:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:49,776 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 1050 transitions. [2019-10-15 01:10:49,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1050 transitions. [2019-10-15 01:10:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:49,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:49,796 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] [2019-10-15 01:10:49,797 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash -385946519, now seen corresponding path program 1 times [2019-10-15 01:10:49,797 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:49,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176333178] [2019-10-15 01:10:49,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:49,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:49,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:50,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176333178] [2019-10-15 01:10:50,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:50,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:50,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781243906] [2019-10-15 01:10:50,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:50,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:50,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:50,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:50,035 INFO L87 Difference]: Start difference. First operand 664 states and 1050 transitions. Second operand 4 states. [2019-10-15 01:10:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:50,170 INFO L93 Difference]: Finished difference Result 1294 states and 2065 transitions. [2019-10-15 01:10:50,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:50,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:10:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:50,185 INFO L225 Difference]: With dead ends: 1294 [2019-10-15 01:10:50,185 INFO L226 Difference]: Without dead ends: 646 [2019-10-15 01:10:50,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-10-15 01:10:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2019-10-15 01:10:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2019-10-15 01:10:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1017 transitions. [2019-10-15 01:10:50,239 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1017 transitions. Word has length 94 [2019-10-15 01:10:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:50,245 INFO L462 AbstractCegarLoop]: Abstraction has 646 states and 1017 transitions. [2019-10-15 01:10:50,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1017 transitions. [2019-10-15 01:10:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:50,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:50,251 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] [2019-10-15 01:10:50,252 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1755116079, now seen corresponding path program 1 times [2019-10-15 01:10:50,252 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:50,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027620998] [2019-10-15 01:10:50,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:50,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027620998] [2019-10-15 01:10:50,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:50,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:50,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094934639] [2019-10-15 01:10:50,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:50,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:50,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:50,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:50,490 INFO L87 Difference]: Start difference. First operand 646 states and 1017 transitions. Second operand 7 states. [2019-10-15 01:10:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:50,596 INFO L93 Difference]: Finished difference Result 1263 states and 2007 transitions. [2019-10-15 01:10:50,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:50,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-15 01:10:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:50,603 INFO L225 Difference]: With dead ends: 1263 [2019-10-15 01:10:50,603 INFO L226 Difference]: Without dead ends: 640 [2019-10-15 01:10:50,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2019-10-15 01:10:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2019-10-15 01:10:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-10-15 01:10:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1004 transitions. [2019-10-15 01:10:50,639 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1004 transitions. Word has length 94 [2019-10-15 01:10:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:50,640 INFO L462 AbstractCegarLoop]: Abstraction has 640 states and 1004 transitions. [2019-10-15 01:10:50,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1004 transitions. [2019-10-15 01:10:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:50,642 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:50,642 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] [2019-10-15 01:10:50,643 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2113338455, now seen corresponding path program 1 times [2019-10-15 01:10:50,643 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:50,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035926303] [2019-10-15 01:10:50,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:50,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035926303] [2019-10-15 01:10:50,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:50,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:50,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106939176] [2019-10-15 01:10:50,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:50,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:50,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:50,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:50,820 INFO L87 Difference]: Start difference. First operand 640 states and 1004 transitions. Second operand 7 states. [2019-10-15 01:10:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:50,946 INFO L93 Difference]: Finished difference Result 1251 states and 1981 transitions. [2019-10-15 01:10:50,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:50,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:10:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:50,969 INFO L225 Difference]: With dead ends: 1251 [2019-10-15 01:10:50,970 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:10:50,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:10:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:10:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:10:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 991 transitions. [2019-10-15 01:10:51,024 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 991 transitions. Word has length 95 [2019-10-15 01:10:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:51,025 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 991 transitions. [2019-10-15 01:10:51,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 991 transitions. [2019-10-15 01:10:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:51,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:51,027 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] [2019-10-15 01:10:51,028 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1806825461, now seen corresponding path program 1 times [2019-10-15 01:10:51,029 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:51,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743593875] [2019-10-15 01:10:51,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:51,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743593875] [2019-10-15 01:10:51,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:51,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:51,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443492292] [2019-10-15 01:10:51,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:51,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:51,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:51,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:51,276 INFO L87 Difference]: Start difference. First operand 634 states and 991 transitions. Second operand 7 states. [2019-10-15 01:10:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:51,367 INFO L93 Difference]: Finished difference Result 1239 states and 1955 transitions. [2019-10-15 01:10:51,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:51,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:10:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:51,373 INFO L225 Difference]: With dead ends: 1239 [2019-10-15 01:10:51,373 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:10:51,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:10:51,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-15 01:10:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:10:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 978 transitions. [2019-10-15 01:10:51,400 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 978 transitions. Word has length 96 [2019-10-15 01:10:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:51,400 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 978 transitions. [2019-10-15 01:10:51,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 978 transitions. [2019-10-15 01:10:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:51,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:51,402 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] [2019-10-15 01:10:51,403 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1099200010, now seen corresponding path program 1 times [2019-10-15 01:10:51,403 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:51,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562972750] [2019-10-15 01:10:51,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:51,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562972750] [2019-10-15 01:10:51,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:51,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:51,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717077009] [2019-10-15 01:10:51,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:51,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:51,556 INFO L87 Difference]: Start difference. First operand 628 states and 978 transitions. Second operand 7 states. [2019-10-15 01:10:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:51,640 INFO L93 Difference]: Finished difference Result 1227 states and 1929 transitions. [2019-10-15 01:10:51,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:51,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:10:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:51,646 INFO L225 Difference]: With dead ends: 1227 [2019-10-15 01:10:51,646 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:10:51,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:10:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-15 01:10:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:10:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 977 transitions. [2019-10-15 01:10:51,672 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 977 transitions. Word has length 96 [2019-10-15 01:10:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:51,672 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 977 transitions. [2019-10-15 01:10:51,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 977 transitions. [2019-10-15 01:10:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:10:51,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:51,674 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] [2019-10-15 01:10:51,674 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:51,675 INFO L82 PathProgramCache]: Analyzing trace with hash 918010957, now seen corresponding path program 1 times [2019-10-15 01:10:51,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:51,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266887571] [2019-10-15 01:10:51,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:51,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266887571] [2019-10-15 01:10:51,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:51,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:51,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092016428] [2019-10-15 01:10:51,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:51,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:51,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:51,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:51,899 INFO L87 Difference]: Start difference. First operand 628 states and 977 transitions. Second operand 5 states. [2019-10-15 01:10:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:51,972 INFO L93 Difference]: Finished difference Result 1226 states and 1926 transitions. [2019-10-15 01:10:51,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:51,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 01:10:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:51,977 INFO L225 Difference]: With dead ends: 1226 [2019-10-15 01:10:51,978 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:10:51,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:10:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-15 01:10:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:10:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 976 transitions. [2019-10-15 01:10:52,009 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 976 transitions. Word has length 97 [2019-10-15 01:10:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:52,010 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 976 transitions. [2019-10-15 01:10:52,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:52,010 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 976 transitions. [2019-10-15 01:10:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:10:52,014 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:52,014 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] [2019-10-15 01:10:52,014 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1933004815, now seen corresponding path program 1 times [2019-10-15 01:10:52,015 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:52,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957661310] [2019-10-15 01:10:52,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:52,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957661310] [2019-10-15 01:10:52,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:52,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:52,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018542985] [2019-10-15 01:10:52,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:52,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:52,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:52,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:52,175 INFO L87 Difference]: Start difference. First operand 628 states and 976 transitions. Second operand 5 states. [2019-10-15 01:10:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:52,258 INFO L93 Difference]: Finished difference Result 1226 states and 1924 transitions. [2019-10-15 01:10:52,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:52,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-15 01:10:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:52,267 INFO L225 Difference]: With dead ends: 1226 [2019-10-15 01:10:52,267 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:10:52,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:10:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-15 01:10:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:10:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 975 transitions. [2019-10-15 01:10:52,297 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 975 transitions. Word has length 98 [2019-10-15 01:10:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:52,301 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 975 transitions. [2019-10-15 01:10:52,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 975 transitions. [2019-10-15 01:10:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:10:52,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:52,303 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] [2019-10-15 01:10:52,303 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash 432757288, now seen corresponding path program 1 times [2019-10-15 01:10:52,304 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:52,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605717727] [2019-10-15 01:10:52,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:52,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605717727] [2019-10-15 01:10:52,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:52,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:52,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118201622] [2019-10-15 01:10:52,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:52,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:52,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:52,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:52,440 INFO L87 Difference]: Start difference. First operand 628 states and 975 transitions. Second operand 5 states. [2019-10-15 01:10:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:52,523 INFO L93 Difference]: Finished difference Result 1226 states and 1922 transitions. [2019-10-15 01:10:52,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:52,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-15 01:10:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:52,532 INFO L225 Difference]: With dead ends: 1226 [2019-10-15 01:10:52,532 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:10:52,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:10:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-15 01:10:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:10:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 974 transitions. [2019-10-15 01:10:52,583 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 974 transitions. Word has length 99 [2019-10-15 01:10:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:52,583 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 974 transitions. [2019-10-15 01:10:52,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 974 transitions. [2019-10-15 01:10:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:10:52,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:52,585 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] [2019-10-15 01:10:52,585 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:52,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1309876268, now seen corresponding path program 1 times [2019-10-15 01:10:52,586 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:52,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304128798] [2019-10-15 01:10:52,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:52,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304128798] [2019-10-15 01:10:52,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:52,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:52,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955384366] [2019-10-15 01:10:52,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:52,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:52,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:52,825 INFO L87 Difference]: Start difference. First operand 628 states and 974 transitions. Second operand 5 states. [2019-10-15 01:10:52,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:52,935 INFO L93 Difference]: Finished difference Result 1226 states and 1920 transitions. [2019-10-15 01:10:52,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:52,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 01:10:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:52,948 INFO L225 Difference]: With dead ends: 1226 [2019-10-15 01:10:52,949 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:10:52,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:10:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-15 01:10:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:10:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 973 transitions. [2019-10-15 01:10:53,009 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 973 transitions. Word has length 100 [2019-10-15 01:10:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:53,010 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 973 transitions. [2019-10-15 01:10:53,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 973 transitions. [2019-10-15 01:10:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:10:53,014 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:53,014 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] [2019-10-15 01:10:53,014 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1011268605, now seen corresponding path program 1 times [2019-10-15 01:10:53,015 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:53,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242486062] [2019-10-15 01:10:53,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:53,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:53,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:53,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242486062] [2019-10-15 01:10:53,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535562635] [2019-10-15 01:10:53,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:53,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:53,910 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:54,018 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:54,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:54,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263021200] [2019-10-15 01:10:54,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:54,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:54,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:54,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:54,020 INFO L87 Difference]: Start difference. First operand 628 states and 973 transitions. Second operand 3 states. [2019-10-15 01:10:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:54,121 INFO L93 Difference]: Finished difference Result 1763 states and 2779 transitions. [2019-10-15 01:10:54,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:54,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-15 01:10:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:54,131 INFO L225 Difference]: With dead ends: 1763 [2019-10-15 01:10:54,132 INFO L226 Difference]: Without dead ends: 1169 [2019-10-15 01:10:54,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-15 01:10:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1156. [2019-10-15 01:10:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2019-10-15 01:10:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1809 transitions. [2019-10-15 01:10:54,206 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1809 transitions. Word has length 101 [2019-10-15 01:10:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:54,209 INFO L462 AbstractCegarLoop]: Abstraction has 1156 states and 1809 transitions. [2019-10-15 01:10:54,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1809 transitions. [2019-10-15 01:10:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:10:54,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:54,211 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] [2019-10-15 01:10:54,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:54,427 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash 522332344, now seen corresponding path program 1 times [2019-10-15 01:10:54,427 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:54,427 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829832399] [2019-10-15 01:10:54,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:54,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:54,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:54,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829832399] [2019-10-15 01:10:54,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:54,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:54,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189895422] [2019-10-15 01:10:54,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:54,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:54,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:54,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:54,570 INFO L87 Difference]: Start difference. First operand 1156 states and 1809 transitions. Second operand 7 states. [2019-10-15 01:10:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:57,726 INFO L93 Difference]: Finished difference Result 3402 states and 5472 transitions. [2019-10-15 01:10:57,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:57,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2019-10-15 01:10:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:57,751 INFO L225 Difference]: With dead ends: 3402 [2019-10-15 01:10:57,751 INFO L226 Difference]: Without dead ends: 2280 [2019-10-15 01:10:57,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:10:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2019-10-15 01:10:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2214. [2019-10-15 01:10:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2019-10-15 01:10:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3549 transitions. [2019-10-15 01:10:57,873 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3549 transitions. Word has length 105 [2019-10-15 01:10:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:57,873 INFO L462 AbstractCegarLoop]: Abstraction has 2214 states and 3549 transitions. [2019-10-15 01:10:57,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3549 transitions. [2019-10-15 01:10:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:10:57,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:57,875 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] [2019-10-15 01:10:57,876 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2018828006, now seen corresponding path program 1 times [2019-10-15 01:10:57,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:57,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810209630] [2019-10-15 01:10:57,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:57,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:57,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:58,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810209630] [2019-10-15 01:10:58,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893327482] [2019-10-15 01:10:58,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:58,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:58,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:58,682 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:58,779 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:58,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:58,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615892766] [2019-10-15 01:10:58,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:58,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:58,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:58,782 INFO L87 Difference]: Start difference. First operand 2214 states and 3549 transitions. Second operand 3 states. [2019-10-15 01:10:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:58,932 INFO L93 Difference]: Finished difference Result 5462 states and 8838 transitions. [2019-10-15 01:10:58,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:58,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-15 01:10:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:58,957 INFO L225 Difference]: With dead ends: 5462 [2019-10-15 01:10:58,958 INFO L226 Difference]: Without dead ends: 3282 [2019-10-15 01:10:58,970 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2019-10-15 01:10:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3182. [2019-10-15 01:10:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3182 states. [2019-10-15 01:10:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 5119 transitions. [2019-10-15 01:10:59,145 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 5119 transitions. Word has length 102 [2019-10-15 01:10:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:59,146 INFO L462 AbstractCegarLoop]: Abstraction has 3182 states and 5119 transitions. [2019-10-15 01:10:59,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 5119 transitions. [2019-10-15 01:10:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:10:59,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:59,148 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] [2019-10-15 01:10:59,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:59,355 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:59,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1548757580, now seen corresponding path program 1 times [2019-10-15 01:10:59,356 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:59,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912900120] [2019-10-15 01:10:59,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:59,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:59,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:59,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912900120] [2019-10-15 01:10:59,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945840329] [2019-10-15 01:10:59,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:00,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:11:00,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:00,293 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:00,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:00,575 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:00,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-15 01:11:00,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163355364] [2019-10-15 01:11:00,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:11:00,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:00,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:11:00,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:11:00,580 INFO L87 Difference]: Start difference. First operand 3182 states and 5119 transitions. Second operand 11 states. [2019-10-15 01:11:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:05,579 INFO L93 Difference]: Finished difference Result 14248 states and 23312 transitions. [2019-10-15 01:11:05,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 01:11:05,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-15 01:11:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:05,668 INFO L225 Difference]: With dead ends: 14248 [2019-10-15 01:11:05,668 INFO L226 Difference]: Without dead ends: 11100 [2019-10-15 01:11:05,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:11:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2019-10-15 01:11:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 10980. [2019-10-15 01:11:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10980 states. [2019-10-15 01:11:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 17536 transitions. [2019-10-15 01:11:06,148 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 17536 transitions. Word has length 105 [2019-10-15 01:11:06,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:06,148 INFO L462 AbstractCegarLoop]: Abstraction has 10980 states and 17536 transitions. [2019-10-15 01:11:06,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:11:06,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 17536 transitions. [2019-10-15 01:11:06,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:11:06,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:06,151 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] [2019-10-15 01:11:06,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:06,362 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:06,362 INFO L82 PathProgramCache]: Analyzing trace with hash 30313455, now seen corresponding path program 1 times [2019-10-15 01:11:06,362 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:06,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098963254] [2019-10-15 01:11:06,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:06,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:06,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:06,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098963254] [2019-10-15 01:11:06,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:06,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:06,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670818082] [2019-10-15 01:11:06,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:06,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:06,491 INFO L87 Difference]: Start difference. First operand 10980 states and 17536 transitions. Second operand 4 states. [2019-10-15 01:11:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:06,986 INFO L93 Difference]: Finished difference Result 21944 states and 35353 transitions. [2019-10-15 01:11:06,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:06,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-15 01:11:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:07,069 INFO L225 Difference]: With dead ends: 21944 [2019-10-15 01:11:07,069 INFO L226 Difference]: Without dead ends: 10998 [2019-10-15 01:11:07,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2019-10-15 01:11:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10962. [2019-10-15 01:11:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10962 states. [2019-10-15 01:11:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 17435 transitions. [2019-10-15 01:11:07,541 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 17435 transitions. Word has length 105 [2019-10-15 01:11:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:07,542 INFO L462 AbstractCegarLoop]: Abstraction has 10962 states and 17435 transitions. [2019-10-15 01:11:07,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 17435 transitions. [2019-10-15 01:11:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:11:07,544 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:07,544 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:07,545 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:07,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1061987221, now seen corresponding path program 1 times [2019-10-15 01:11:07,545 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:07,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363768332] [2019-10-15 01:11:07,546 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:07,546 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:07,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:07,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363768332] [2019-10-15 01:11:07,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:07,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:07,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463583930] [2019-10-15 01:11:07,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:07,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:07,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:07,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:07,681 INFO L87 Difference]: Start difference. First operand 10962 states and 17435 transitions. Second operand 7 states. [2019-10-15 01:11:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:11,053 INFO L93 Difference]: Finished difference Result 32902 states and 54000 transitions. [2019-10-15 01:11:11,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:11,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 01:11:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:11,215 INFO L225 Difference]: With dead ends: 32902 [2019-10-15 01:11:11,216 INFO L226 Difference]: Without dead ends: 21974 [2019-10-15 01:11:12,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21974 states. [2019-10-15 01:11:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21974 to 21788. [2019-10-15 01:11:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21788 states. [2019-10-15 01:11:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21788 states to 21788 states and 35353 transitions. [2019-10-15 01:11:13,004 INFO L78 Accepts]: Start accepts. Automaton has 21788 states and 35353 transitions. Word has length 113 [2019-10-15 01:11:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:13,006 INFO L462 AbstractCegarLoop]: Abstraction has 21788 states and 35353 transitions. [2019-10-15 01:11:13,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand 21788 states and 35353 transitions. [2019-10-15 01:11:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 01:11:13,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:13,009 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:13,009 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1342674105, now seen corresponding path program 1 times [2019-10-15 01:11:13,009 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:13,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395255815] [2019-10-15 01:11:13,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:13,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:13,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:11:13,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395255815] [2019-10-15 01:11:13,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:13,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:13,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500580457] [2019-10-15 01:11:13,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:13,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:13,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:13,135 INFO L87 Difference]: Start difference. First operand 21788 states and 35353 transitions. Second operand 4 states. [2019-10-15 01:11:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:14,110 INFO L93 Difference]: Finished difference Result 43650 states and 71572 transitions. [2019-10-15 01:11:14,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:14,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-10-15 01:11:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:14,263 INFO L225 Difference]: With dead ends: 43650 [2019-10-15 01:11:14,263 INFO L226 Difference]: Without dead ends: 21893 [2019-10-15 01:11:14,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21893 states. [2019-10-15 01:11:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21893 to 21819. [2019-10-15 01:11:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21819 states.