/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:42:23,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:42:23,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:42:23,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:42:23,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:42:23,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:42:23,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:42:23,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:42:23,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:42:23,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:42:23,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:42:23,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:42:23,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:42:23,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:42:23,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:42:23,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:42:23,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:42:23,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:42:23,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:42:23,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:42:23,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:42:23,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:42:23,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:42:23,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:42:23,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:42:23,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:42:23,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:42:23,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:42:23,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:42:23,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:42:23,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:42:23,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:42:23,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:42:23,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:42:23,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:42:23,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:42:23,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:42:23,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:42:23,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:42:23,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:42:23,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:42:23,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:42:23,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:42:23,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:42:23,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:42:23,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:42:23,618 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:42:23,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:42:23,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:42:23,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:42:23,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:42:23,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:42:23,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:42:23,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:42:23,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:42:23,621 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:42:23,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:42:23,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:42:23,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:42:23,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:42:23,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:42:23,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:42:23,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:42:23,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:42:23,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:42:23,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:42:23,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:42:23,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:42:23,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:42:23,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:42:23,624 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 [2019-11-07 00:42:23,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:42:23,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:42:23,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:42:23,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:42:23,977 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:42:23,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2019-11-07 00:42:24,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fdc29a6d/5a1af27196644a6a813fb74407f418fd/FLAGe917208f9 [2019-11-07 00:42:24,729 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:42:24,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2019-11-07 00:42:24,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fdc29a6d/5a1af27196644a6a813fb74407f418fd/FLAGe917208f9 [2019-11-07 00:42:24,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fdc29a6d/5a1af27196644a6a813fb74407f418fd [2019-11-07 00:42:24,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:42:24,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:42:24,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:42:24,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:42:24,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:42:24,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:24" (1/1) ... [2019-11-07 00:42:24,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6deb8361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:24, skipping insertion in model container [2019-11-07 00:42:24,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:24" (1/1) ... [2019-11-07 00:42:24,902 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:42:24,981 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:42:25,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:42:25,757 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:42:25,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:42:26,069 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:42:26,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26 WrapperNode [2019-11-07 00:42:26,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:42:26,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:42:26,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:42:26,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:42:26,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... [2019-11-07 00:42:26,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:42:26,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:42:26,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:42:26,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:42:26,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:42:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:42:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:42:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:42:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:42:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:42:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:42:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:42:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:42:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:42:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:42:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:42:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:42:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:42:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:42:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:42:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:42:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:42:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:42:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:42:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:42:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:42:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:42:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:42:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:42:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:42:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:42:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:42:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:42:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 00:42:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:42:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:42:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:42:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:42:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 00:42:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:42:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:42:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:42:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 00:42:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:42:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 00:42:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:42:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:42:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:42:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:42:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:42:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:42:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:42:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:42:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:42:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:42:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:42:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:42:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:42:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:42:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:42:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:42:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:42:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:42:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:42:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:42:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:42:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:42:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:42:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:42:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:42:26,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:42:26,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:42:26,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:42:26,413 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:42:26,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:42:26,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:42:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:42:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:42:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:42:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:42:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:42:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:42:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:42:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:42:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:42:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:42:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:42:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:42:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:42:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:42:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:42:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:42:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:42:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:42:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:42:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:42:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:42:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:42:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:42:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:42:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:42:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:42:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:42:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:42:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:42:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:42:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:42:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:42:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:42:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:42:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:42:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:42:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:42:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:42:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:42:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:42:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:42:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:42:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:42:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:42:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:42:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:42:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:42:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 00:42:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:42:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:42:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:42:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 00:42:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:42:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:42:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:42:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 00:42:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:42:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 00:42:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:42:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:42:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:42:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:42:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:42:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:42:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:42:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:42:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:42:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:42:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:42:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:42:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:42:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:42:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:42:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:42:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:42:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:42:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:42:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:42:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:42:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:42:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:42:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:42:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:42:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:42:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:42:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:42:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:42:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:42:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:42:28,861 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:42:28,862 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:42:28,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:28 BoogieIcfgContainer [2019-11-07 00:42:28,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:42:28,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:42:28,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:42:28,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:42:28,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:42:24" (1/3) ... [2019-11-07 00:42:28,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f8c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:28, skipping insertion in model container [2019-11-07 00:42:28,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:26" (2/3) ... [2019-11-07 00:42:28,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f8c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:28, skipping insertion in model container [2019-11-07 00:42:28,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:28" (3/3) ... [2019-11-07 00:42:28,876 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2019-11-07 00:42:28,887 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:42:28,902 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:42:28,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:42:28,968 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:42:28,968 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:42:28,969 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:42:28,969 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:42:28,969 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:42:28,969 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:42:28,969 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:42:28,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:42:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states. [2019-11-07 00:42:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-07 00:42:29,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:29,050 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:29,053 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1311658421, now seen corresponding path program 1 times [2019-11-07 00:42:29,073 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:29,074 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359383513] [2019-11-07 00:42:29,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:29,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359383513] [2019-11-07 00:42:29,751 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:29,752 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:29,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604919391] [2019-11-07 00:42:29,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:29,763 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:29,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:29,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:29,781 INFO L87 Difference]: Start difference. First operand 817 states. Second operand 4 states. [2019-11-07 00:42:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:29,979 INFO L93 Difference]: Finished difference Result 1283 states and 2055 transitions. [2019-11-07 00:42:29,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:29,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-11-07 00:42:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:30,029 INFO L225 Difference]: With dead ends: 1283 [2019-11-07 00:42:30,029 INFO L226 Difference]: Without dead ends: 650 [2019-11-07 00:42:30,045 INFO L630 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 [2019-11-07 00:42:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-11-07 00:42:30,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-11-07 00:42:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-11-07 00:42:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1029 transitions. [2019-11-07 00:42:30,199 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1029 transitions. Word has length 85 [2019-11-07 00:42:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:30,200 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1029 transitions. [2019-11-07 00:42:30,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1029 transitions. [2019-11-07 00:42:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 00:42:30,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:30,209 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:30,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1025593736, now seen corresponding path program 1 times [2019-11-07 00:42:30,211 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:30,211 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673423774] [2019-11-07 00:42:30,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:30,477 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673423774] [2019-11-07 00:42:30,478 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:30,478 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:30,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645566125] [2019-11-07 00:42:30,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:30,491 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:30,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:30,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:30,492 INFO L87 Difference]: Start difference. First operand 650 states and 1029 transitions. Second operand 4 states. [2019-11-07 00:42:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:30,573 INFO L93 Difference]: Finished difference Result 1263 states and 2016 transitions. [2019-11-07 00:42:30,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:30,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 00:42:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:30,580 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:42:30,580 INFO L226 Difference]: Without dead ends: 650 [2019-11-07 00:42:30,584 INFO L630 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 [2019-11-07 00:42:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-11-07 00:42:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-11-07 00:42:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-11-07 00:42:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1028 transitions. [2019-11-07 00:42:30,617 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1028 transitions. Word has length 88 [2019-11-07 00:42:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:30,618 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1028 transitions. [2019-11-07 00:42:30,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:30,618 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1028 transitions. [2019-11-07 00:42:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 00:42:30,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:30,622 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:30,622 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:30,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1118647296, now seen corresponding path program 1 times [2019-11-07 00:42:30,623 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:30,623 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405652830] [2019-11-07 00:42:30,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:30,856 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405652830] [2019-11-07 00:42:30,856 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:30,856 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:30,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607204822] [2019-11-07 00:42:30,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:30,857 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:30,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:30,858 INFO L87 Difference]: Start difference. First operand 650 states and 1028 transitions. Second operand 4 states. [2019-11-07 00:42:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:30,932 INFO L93 Difference]: Finished difference Result 1263 states and 2015 transitions. [2019-11-07 00:42:30,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:30,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-07 00:42:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:30,938 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:42:30,938 INFO L226 Difference]: Without dead ends: 650 [2019-11-07 00:42:30,941 INFO L630 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 [2019-11-07 00:42:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-11-07 00:42:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-11-07 00:42:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-11-07 00:42:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1027 transitions. [2019-11-07 00:42:30,978 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1027 transitions. Word has length 89 [2019-11-07 00:42:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:30,979 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1027 transitions. [2019-11-07 00:42:30,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1027 transitions. [2019-11-07 00:42:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 00:42:30,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:30,981 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:30,981 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash -210310140, now seen corresponding path program 1 times [2019-11-07 00:42:30,982 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:30,982 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112851938] [2019-11-07 00:42:30,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:31,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112851938] [2019-11-07 00:42:31,169 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:31,169 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:31,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856795468] [2019-11-07 00:42:31,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:31,170 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:31,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:31,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:31,171 INFO L87 Difference]: Start difference. First operand 650 states and 1027 transitions. Second operand 4 states. [2019-11-07 00:42:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:31,243 INFO L93 Difference]: Finished difference Result 1263 states and 2014 transitions. [2019-11-07 00:42:31,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:31,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-11-07 00:42:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:31,252 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:42:31,252 INFO L226 Difference]: Without dead ends: 650 [2019-11-07 00:42:31,258 INFO L630 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 [2019-11-07 00:42:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-11-07 00:42:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-11-07 00:42:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-11-07 00:42:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1026 transitions. [2019-11-07 00:42:31,302 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1026 transitions. Word has length 90 [2019-11-07 00:42:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:31,303 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1026 transitions. [2019-11-07 00:42:31,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1026 transitions. [2019-11-07 00:42:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 00:42:31,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:31,311 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:31,312 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1623031804, now seen corresponding path program 1 times [2019-11-07 00:42:31,313 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:31,313 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168125969] [2019-11-07 00:42:31,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:31,460 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168125969] [2019-11-07 00:42:31,460 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:31,460 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:31,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576181126] [2019-11-07 00:42:31,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:31,461 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:31,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:31,462 INFO L87 Difference]: Start difference. First operand 650 states and 1026 transitions. Second operand 4 states. [2019-11-07 00:42:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:31,522 INFO L93 Difference]: Finished difference Result 1263 states and 2013 transitions. [2019-11-07 00:42:31,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:31,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-11-07 00:42:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:31,537 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:42:31,537 INFO L226 Difference]: Without dead ends: 650 [2019-11-07 00:42:31,543 INFO L630 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 [2019-11-07 00:42:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-11-07 00:42:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-11-07 00:42:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-11-07 00:42:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1025 transitions. [2019-11-07 00:42:31,569 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1025 transitions. Word has length 91 [2019-11-07 00:42:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:31,570 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1025 transitions. [2019-11-07 00:42:31,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1025 transitions. [2019-11-07 00:42:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:42:31,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:31,573 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:31,573 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:31,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1591560576, now seen corresponding path program 1 times [2019-11-07 00:42:31,574 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:31,574 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552266862] [2019-11-07 00:42:31,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:31,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552266862] [2019-11-07 00:42:31,877 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:31,878 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:42:31,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526311561] [2019-11-07 00:42:31,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:42:31,880 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:31,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:42:31,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:42:31,881 INFO L87 Difference]: Start difference. First operand 650 states and 1025 transitions. Second operand 10 states. [2019-11-07 00:42:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:32,105 INFO L93 Difference]: Finished difference Result 1221 states and 1933 transitions. [2019-11-07 00:42:32,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:42:32,106 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-11-07 00:42:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:32,111 INFO L225 Difference]: With dead ends: 1221 [2019-11-07 00:42:32,111 INFO L226 Difference]: Without dead ends: 659 [2019-11-07 00:42:32,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:42:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-11-07 00:42:32,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2019-11-07 00:42:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-11-07 00:42:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1034 transitions. [2019-11-07 00:42:32,150 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1034 transitions. Word has length 92 [2019-11-07 00:42:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:32,152 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1034 transitions. [2019-11-07 00:42:32,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:42:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1034 transitions. [2019-11-07 00:42:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:42:32,156 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:32,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:32,156 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:32,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1571223201, now seen corresponding path program 1 times [2019-11-07 00:42:32,156 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:32,156 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981682800] [2019-11-07 00:42:32,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:32,260 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981682800] [2019-11-07 00:42:32,260 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:32,260 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:32,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489924117] [2019-11-07 00:42:32,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:32,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:32,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:32,262 INFO L87 Difference]: Start difference. First operand 657 states and 1034 transitions. Second operand 4 states. [2019-11-07 00:42:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:32,322 INFO L93 Difference]: Finished difference Result 1269 states and 2019 transitions. [2019-11-07 00:42:32,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:32,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-11-07 00:42:32,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:32,329 INFO L225 Difference]: With dead ends: 1269 [2019-11-07 00:42:32,329 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 00:42:32,333 INFO L630 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 [2019-11-07 00:42:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 00:42:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-11-07 00:42:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-11-07 00:42:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1011 transitions. [2019-11-07 00:42:32,356 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1011 transitions. Word has length 92 [2019-11-07 00:42:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:32,357 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1011 transitions. [2019-11-07 00:42:32,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1011 transitions. [2019-11-07 00:42:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:42:32,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:32,361 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:32,361 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash -120264268, now seen corresponding path program 1 times [2019-11-07 00:42:32,362 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:32,362 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219928586] [2019-11-07 00:42:32,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:32,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219928586] [2019-11-07 00:42:32,488 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:32,488 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:32,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462643499] [2019-11-07 00:42:32,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:32,489 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:32,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:32,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:32,491 INFO L87 Difference]: Start difference. First operand 644 states and 1011 transitions. Second operand 6 states. [2019-11-07 00:42:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:32,787 INFO L93 Difference]: Finished difference Result 1209 states and 1911 transitions. [2019-11-07 00:42:32,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:32,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-11-07 00:42:32,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:32,793 INFO L225 Difference]: With dead ends: 1209 [2019-11-07 00:42:32,793 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 00:42:32,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 00:42:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-11-07 00:42:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-11-07 00:42:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1007 transitions. [2019-11-07 00:42:32,827 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1007 transitions. Word has length 93 [2019-11-07 00:42:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:32,827 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1007 transitions. [2019-11-07 00:42:32,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1007 transitions. [2019-11-07 00:42:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:42:32,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:32,829 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:32,830 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1667290269, now seen corresponding path program 1 times [2019-11-07 00:42:32,830 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:32,830 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064293931] [2019-11-07 00:42:32,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:32,985 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064293931] [2019-11-07 00:42:32,985 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:32,986 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:32,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236575502] [2019-11-07 00:42:32,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:32,986 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:32,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:32,987 INFO L87 Difference]: Start difference. First operand 644 states and 1007 transitions. Second operand 6 states. [2019-11-07 00:42:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:33,267 INFO L93 Difference]: Finished difference Result 1209 states and 1907 transitions. [2019-11-07 00:42:33,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:33,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-11-07 00:42:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:33,275 INFO L225 Difference]: With dead ends: 1209 [2019-11-07 00:42:33,275 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 00:42:33,281 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 00:42:33,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-11-07 00:42:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-11-07 00:42:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1003 transitions. [2019-11-07 00:42:33,321 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1003 transitions. Word has length 94 [2019-11-07 00:42:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:33,322 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1003 transitions. [2019-11-07 00:42:33,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1003 transitions. [2019-11-07 00:42:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:42:33,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:33,325 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:33,325 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:33,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1875714457, now seen corresponding path program 1 times [2019-11-07 00:42:33,326 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:33,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541940878] [2019-11-07 00:42:33,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:33,478 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541940878] [2019-11-07 00:42:33,479 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:33,479 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:33,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378568076] [2019-11-07 00:42:33,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:33,481 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:33,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:33,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:33,482 INFO L87 Difference]: Start difference. First operand 644 states and 1003 transitions. Second operand 6 states. [2019-11-07 00:42:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:33,680 INFO L93 Difference]: Finished difference Result 1209 states and 1903 transitions. [2019-11-07 00:42:33,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:33,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-07 00:42:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:33,686 INFO L225 Difference]: With dead ends: 1209 [2019-11-07 00:42:33,686 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 00:42:33,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 00:42:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-11-07 00:42:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-11-07 00:42:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 999 transitions. [2019-11-07 00:42:33,727 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 999 transitions. Word has length 95 [2019-11-07 00:42:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:33,728 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 999 transitions. [2019-11-07 00:42:33,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 999 transitions. [2019-11-07 00:42:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:42:33,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:33,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:33,730 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:33,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1371398631, now seen corresponding path program 1 times [2019-11-07 00:42:33,730 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:33,731 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348152440] [2019-11-07 00:42:33,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:33,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348152440] [2019-11-07 00:42:33,952 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:33,952 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:42:33,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638064763] [2019-11-07 00:42:33,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:42:33,953 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:33,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:42:33,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:42:33,954 INFO L87 Difference]: Start difference. First operand 644 states and 999 transitions. Second operand 7 states. [2019-11-07 00:42:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:34,035 INFO L93 Difference]: Finished difference Result 1209 states and 1899 transitions. [2019-11-07 00:42:34,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:42:34,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-11-07 00:42:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:34,040 INFO L225 Difference]: With dead ends: 1209 [2019-11-07 00:42:34,041 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:42:34,044 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:42:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:42:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:42:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 965 transitions. [2019-11-07 00:42:34,064 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 965 transitions. Word has length 95 [2019-11-07 00:42:34,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:34,064 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 965 transitions. [2019-11-07 00:42:34,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:42:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 965 transitions. [2019-11-07 00:42:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:42:34,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:34,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:34,066 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:34,066 INFO L82 PathProgramCache]: Analyzing trace with hash 914472, now seen corresponding path program 1 times [2019-11-07 00:42:34,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:34,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262427899] [2019-11-07 00:42:34,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:34,171 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262427899] [2019-11-07 00:42:34,171 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:34,171 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:34,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116702243] [2019-11-07 00:42:34,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:34,172 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:34,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:34,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:34,173 INFO L87 Difference]: Start difference. First operand 623 states and 965 transitions. Second operand 6 states. [2019-11-07 00:42:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:34,270 INFO L93 Difference]: Finished difference Result 1188 states and 1865 transitions. [2019-11-07 00:42:34,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:34,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-11-07 00:42:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:34,276 INFO L225 Difference]: With dead ends: 1188 [2019-11-07 00:42:34,276 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:42:34,279 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:42:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:42:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:42:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 964 transitions. [2019-11-07 00:42:34,299 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 964 transitions. Word has length 96 [2019-11-07 00:42:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:34,300 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 964 transitions. [2019-11-07 00:42:34,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 964 transitions. [2019-11-07 00:42:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:42:34,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:34,302 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:34,302 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1972860286, now seen corresponding path program 1 times [2019-11-07 00:42:34,303 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:34,303 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438241548] [2019-11-07 00:42:34,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:34,409 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438241548] [2019-11-07 00:42:34,409 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:34,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:34,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127688324] [2019-11-07 00:42:34,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:34,410 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:34,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:34,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:34,411 INFO L87 Difference]: Start difference. First operand 623 states and 964 transitions. Second operand 6 states. [2019-11-07 00:42:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:34,526 INFO L93 Difference]: Finished difference Result 1188 states and 1864 transitions. [2019-11-07 00:42:34,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:34,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 00:42:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:34,532 INFO L225 Difference]: With dead ends: 1188 [2019-11-07 00:42:34,533 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:42:34,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:42:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:42:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:42:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 963 transitions. [2019-11-07 00:42:34,561 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 963 transitions. Word has length 97 [2019-11-07 00:42:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:34,561 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 963 transitions. [2019-11-07 00:42:34,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 963 transitions. [2019-11-07 00:42:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:42:34,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:34,563 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:34,563 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1360125715, now seen corresponding path program 1 times [2019-11-07 00:42:34,564 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:34,564 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233016139] [2019-11-07 00:42:34,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:34,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233016139] [2019-11-07 00:42:34,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:34,808 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:34,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142426245] [2019-11-07 00:42:34,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:34,808 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:34,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:34,809 INFO L87 Difference]: Start difference. First operand 623 states and 963 transitions. Second operand 12 states. [2019-11-07 00:42:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:35,002 INFO L93 Difference]: Finished difference Result 1189 states and 1863 transitions. [2019-11-07 00:42:35,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:42:35,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-11-07 00:42:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:35,007 INFO L225 Difference]: With dead ends: 1189 [2019-11-07 00:42:35,008 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:42:35,011 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:42:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:42:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:42:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:42:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 962 transitions. [2019-11-07 00:42:35,032 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 962 transitions. Word has length 98 [2019-11-07 00:42:35,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:35,032 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 962 transitions. [2019-11-07 00:42:35,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:42:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 962 transitions. [2019-11-07 00:42:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:42:35,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:35,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:35,034 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:35,035 INFO L82 PathProgramCache]: Analyzing trace with hash 372702175, now seen corresponding path program 1 times [2019-11-07 00:42:35,035 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:35,035 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678934531] [2019-11-07 00:42:35,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:35,187 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678934531] [2019-11-07 00:42:35,188 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:35,188 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:35,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058676989] [2019-11-07 00:42:35,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:35,189 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:35,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:35,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:35,189 INFO L87 Difference]: Start difference. First operand 623 states and 962 transitions. Second operand 6 states. [2019-11-07 00:42:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:39,193 INFO L93 Difference]: Finished difference Result 1847 states and 2936 transitions. [2019-11-07 00:42:39,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:39,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-11-07 00:42:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:39,206 INFO L225 Difference]: With dead ends: 1847 [2019-11-07 00:42:39,206 INFO L226 Difference]: Without dead ends: 1290 [2019-11-07 00:42:39,210 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-11-07 00:42:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1165. [2019-11-07 00:42:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-11-07 00:42:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1844 transitions. [2019-11-07 00:42:39,266 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1844 transitions. Word has length 99 [2019-11-07 00:42:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:39,266 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1844 transitions. [2019-11-07 00:42:39,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1844 transitions. [2019-11-07 00:42:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:42:39,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:39,273 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:39,273 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1417866634, now seen corresponding path program 1 times [2019-11-07 00:42:39,274 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:39,274 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400331184] [2019-11-07 00:42:39,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:42:39,428 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400331184] [2019-11-07 00:42:39,428 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132180701] [2019-11-07 00:42:39,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:42:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:40,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 00:42:40,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:42:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:42:40,164 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:42:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:42:41,272 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:42:41,272 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-11-07 00:42:41,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107637504] [2019-11-07 00:42:41,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:42:41,274 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:41,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:42:41,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:42:41,275 INFO L87 Difference]: Start difference. First operand 1165 states and 1844 transitions. Second operand 5 states. [2019-11-07 00:42:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:42,544 INFO L93 Difference]: Finished difference Result 2280 states and 3703 transitions. [2019-11-07 00:42:42,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:42,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-11-07 00:42:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:42,559 INFO L225 Difference]: With dead ends: 2280 [2019-11-07 00:42:42,560 INFO L226 Difference]: Without dead ends: 1181 [2019-11-07 00:42:42,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 302 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:42:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-11-07 00:42:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2019-11-07 00:42:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2019-11-07 00:42:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1870 transitions. [2019-11-07 00:42:42,638 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1870 transitions. Word has length 158 [2019-11-07 00:42:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:42,638 INFO L462 AbstractCegarLoop]: Abstraction has 1181 states and 1870 transitions. [2019-11-07 00:42:42,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:42:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1870 transitions. [2019-11-07 00:42:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 00:42:42,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:42,647 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:42,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:42:42,858 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:42,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1476873735, now seen corresponding path program 1 times [2019-11-07 00:42:42,859 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:42,859 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086202046] [2019-11-07 00:42:42,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:42:43,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086202046] [2019-11-07 00:42:43,159 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:43,159 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:43,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495449192] [2019-11-07 00:42:43,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:43,160 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:43,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:43,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:43,161 INFO L87 Difference]: Start difference. First operand 1181 states and 1870 transitions. Second operand 12 states. [2019-11-07 00:42:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:57,838 INFO L93 Difference]: Finished difference Result 3914 states and 6204 transitions. [2019-11-07 00:42:57,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:42:57,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2019-11-07 00:42:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:57,864 INFO L225 Difference]: With dead ends: 3914 [2019-11-07 00:42:57,864 INFO L226 Difference]: Without dead ends: 2799 [2019-11-07 00:42:57,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:42:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2019-11-07 00:42:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2741. [2019-11-07 00:42:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2019-11-07 00:42:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4299 transitions. [2019-11-07 00:42:58,027 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4299 transitions. Word has length 159 [2019-11-07 00:42:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:58,027 INFO L462 AbstractCegarLoop]: Abstraction has 2741 states and 4299 transitions. [2019-11-07 00:42:58,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:42:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4299 transitions. [2019-11-07 00:42:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 00:42:58,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:58,034 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:58,034 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:58,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1813348040, now seen corresponding path program 1 times [2019-11-07 00:42:58,035 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:58,035 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834433682] [2019-11-07 00:42:58,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:42:58,196 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834433682] [2019-11-07 00:42:58,196 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191170251] [2019-11-07 00:42:58,196 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