java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:11:30,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:11:30,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:11:30,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:11:30,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:11:30,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:11:30,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:11:30,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:11:30,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:11:30,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:11:30,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:11:30,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:11:30,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:11:30,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:11:30,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:11:30,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:11:30,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:11:30,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:11:30,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:11:30,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:11:30,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:11:30,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:11:30,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:11:30,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:11:30,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:11:30,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:11:30,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:11:30,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:11:30,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:11:30,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:11:30,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:11:30,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:11:30,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:11:30,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:11:30,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:11:30,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:11:30,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:11:30,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:11:30,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:11:30,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:11:30,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:11:30,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:11:30,716 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:11:30,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:11:30,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:11:30,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:11:30,718 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:11:30,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:11:30,719 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:11:30,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:11:30,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:11:30,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:11:30,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:11:30,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:11:30,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:11:30,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:11:30,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:11:30,721 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:11:30,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:11:30,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:11:30,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:11:30,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:11:30,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:11:30,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:30,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:11:30,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:11:30,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:11:30,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:11:30,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:11:30,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:11:30,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:11:31,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:11:31,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:11:31,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:11:31,030 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:11:31,030 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:11:31,031 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c [2019-10-13 21:11:31,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0794276fa/d9c77bfc45434114b3159501614f63ba/FLAG6b63b1b05 [2019-10-13 21:11:31,671 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:11:31,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c [2019-10-13 21:11:31,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0794276fa/d9c77bfc45434114b3159501614f63ba/FLAG6b63b1b05 [2019-10-13 21:11:31,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0794276fa/d9c77bfc45434114b3159501614f63ba [2019-10-13 21:11:31,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:11:31,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:11:31,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:31,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:11:31,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:11:31,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:31" (1/1) ... [2019-10-13 21:11:31,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3364723e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:31, skipping insertion in model container [2019-10-13 21:11:31,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:31" (1/1) ... [2019-10-13 21:11:31,971 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:11:32,069 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:11:32,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:32,837 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:11:33,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:33,074 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:11:33,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33 WrapperNode [2019-10-13 21:11:33,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:33,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:11:33,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:11:33,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:33,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... [2019-10-13 21:11:33,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:33,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:33,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:33,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:33,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:33,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:33,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:33,355 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:33,387 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:33,387 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:33,387 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:33,387 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:33,387 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:35,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:35,945 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:35,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:35 BoogieIcfgContainer [2019-10-13 21:11:35,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:35,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:35,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:35,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:35,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:11:31" (1/3) ... [2019-10-13 21:11:35,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ec2d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:35, skipping insertion in model container [2019-10-13 21:11:35,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:33" (2/3) ... [2019-10-13 21:11:35,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ec2d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:35, skipping insertion in model container [2019-10-13 21:11:35,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:35" (3/3) ... [2019-10-13 21:11:35,957 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2019-10-13 21:11:35,970 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:35,981 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:35,993 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:36,036 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:36,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:36,037 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:36,037 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:36,037 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:36,037 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:36,037 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:36,037 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states. [2019-10-13 21:11:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 21:11:36,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:36,121 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:36,123 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1161933342, now seen corresponding path program 1 times [2019-10-13 21:11:36,140 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:36,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970371246] [2019-10-13 21:11:36,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:36,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:36,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:36,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970371246] [2019-10-13 21:11:36,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:36,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:36,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919395580] [2019-10-13 21:11:36,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:36,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:36,926 INFO L87 Difference]: Start difference. First operand 757 states. Second operand 7 states. [2019-10-13 21:11:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:37,246 INFO L93 Difference]: Finished difference Result 1193 states and 1952 transitions. [2019-10-13 21:11:37,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:37,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-13 21:11:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:37,281 INFO L225 Difference]: With dead ends: 1193 [2019-10-13 21:11:37,281 INFO L226 Difference]: Without dead ends: 605 [2019-10-13 21:11:37,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-13 21:11:37,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2019-10-13 21:11:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-13 21:11:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 971 transitions. [2019-10-13 21:11:37,469 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 971 transitions. Word has length 115 [2019-10-13 21:11:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:37,469 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 971 transitions. [2019-10-13 21:11:37,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 971 transitions. [2019-10-13 21:11:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 21:11:37,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:37,476 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:37,476 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1514671527, now seen corresponding path program 1 times [2019-10-13 21:11:37,477 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:37,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822086396] [2019-10-13 21:11:37,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:37,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:37,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:37,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822086396] [2019-10-13 21:11:37,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:37,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:37,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459856096] [2019-10-13 21:11:37,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:37,724 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:37,724 INFO L87 Difference]: Start difference. First operand 603 states and 971 transitions. Second operand 4 states. [2019-10-13 21:11:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:37,830 INFO L93 Difference]: Finished difference Result 1172 states and 1907 transitions. [2019-10-13 21:11:37,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:37,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-13 21:11:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:37,838 INFO L225 Difference]: With dead ends: 1172 [2019-10-13 21:11:37,839 INFO L226 Difference]: Without dead ends: 585 [2019-10-13 21:11:37,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-10-13 21:11:37,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-10-13 21:11:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-10-13 21:11:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 938 transitions. [2019-10-13 21:11:37,885 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 938 transitions. Word has length 116 [2019-10-13 21:11:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:37,887 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 938 transitions. [2019-10-13 21:11:37,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 938 transitions. [2019-10-13 21:11:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 21:11:37,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:37,898 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:37,900 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1422688811, now seen corresponding path program 1 times [2019-10-13 21:11:37,904 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:37,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650475402] [2019-10-13 21:11:37,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:37,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:37,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:38,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650475402] [2019-10-13 21:11:38,196 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:38,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:38,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177026159] [2019-10-13 21:11:38,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:38,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:38,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:38,202 INFO L87 Difference]: Start difference. First operand 585 states and 938 transitions. Second operand 7 states. [2019-10-13 21:11:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:38,299 INFO L93 Difference]: Finished difference Result 1141 states and 1849 transitions. [2019-10-13 21:11:38,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:38,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-13 21:11:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:38,308 INFO L225 Difference]: With dead ends: 1141 [2019-10-13 21:11:38,308 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 21:11:38,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 21:11:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-10-13 21:11:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-13 21:11:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 925 transitions. [2019-10-13 21:11:38,348 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 925 transitions. Word has length 116 [2019-10-13 21:11:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:38,348 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 925 transitions. [2019-10-13 21:11:38,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 925 transitions. [2019-10-13 21:11:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 21:11:38,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:38,352 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:38,352 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash 877146082, now seen corresponding path program 1 times [2019-10-13 21:11:38,353 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:38,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410768509] [2019-10-13 21:11:38,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:38,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:38,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:38,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410768509] [2019-10-13 21:11:38,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:38,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:38,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496984984] [2019-10-13 21:11:38,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:38,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:38,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:38,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:38,550 INFO L87 Difference]: Start difference. First operand 579 states and 925 transitions. Second operand 7 states. [2019-10-13 21:11:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:38,649 INFO L93 Difference]: Finished difference Result 1129 states and 1823 transitions. [2019-10-13 21:11:38,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:38,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-10-13 21:11:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:38,656 INFO L225 Difference]: With dead ends: 1129 [2019-10-13 21:11:38,656 INFO L226 Difference]: Without dead ends: 573 [2019-10-13 21:11:38,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:38,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-10-13 21:11:38,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2019-10-13 21:11:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-13 21:11:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 912 transitions. [2019-10-13 21:11:38,692 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 912 transitions. Word has length 117 [2019-10-13 21:11:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:38,694 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 912 transitions. [2019-10-13 21:11:38,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 912 transitions. [2019-10-13 21:11:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 21:11:38,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:38,699 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:38,699 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:38,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1106162991, now seen corresponding path program 1 times [2019-10-13 21:11:38,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:38,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352230243] [2019-10-13 21:11:38,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:38,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:38,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:38,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352230243] [2019-10-13 21:11:38,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:38,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:38,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964868353] [2019-10-13 21:11:38,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:38,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:38,905 INFO L87 Difference]: Start difference. First operand 573 states and 912 transitions. Second operand 7 states. [2019-10-13 21:11:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:39,007 INFO L93 Difference]: Finished difference Result 1117 states and 1797 transitions. [2019-10-13 21:11:39,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:39,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-13 21:11:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:39,019 INFO L225 Difference]: With dead ends: 1117 [2019-10-13 21:11:39,020 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:11:39,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:11:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-10-13 21:11:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-10-13 21:11:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 899 transitions. [2019-10-13 21:11:39,056 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 899 transitions. Word has length 118 [2019-10-13 21:11:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:39,057 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 899 transitions. [2019-10-13 21:11:39,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 899 transitions. [2019-10-13 21:11:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 21:11:39,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:39,064 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:39,064 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:39,066 INFO L82 PathProgramCache]: Analyzing trace with hash -74424208, now seen corresponding path program 1 times [2019-10-13 21:11:39,066 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:39,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931426301] [2019-10-13 21:11:39,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:39,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:39,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:39,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931426301] [2019-10-13 21:11:39,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:39,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:39,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633387274] [2019-10-13 21:11:39,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:39,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:39,324 INFO L87 Difference]: Start difference. First operand 567 states and 899 transitions. Second operand 7 states. [2019-10-13 21:11:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:39,425 INFO L93 Difference]: Finished difference Result 1105 states and 1771 transitions. [2019-10-13 21:11:39,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:39,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-13 21:11:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:39,445 INFO L225 Difference]: With dead ends: 1105 [2019-10-13 21:11:39,446 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:11:39,451 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:11:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-10-13 21:11:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-10-13 21:11:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 898 transitions. [2019-10-13 21:11:39,482 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 898 transitions. Word has length 118 [2019-10-13 21:11:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:39,483 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 898 transitions. [2019-10-13 21:11:39,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 898 transitions. [2019-10-13 21:11:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 21:11:39,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:39,487 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:39,487 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:39,488 INFO L82 PathProgramCache]: Analyzing trace with hash -423275098, now seen corresponding path program 1 times [2019-10-13 21:11:39,488 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:39,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725433556] [2019-10-13 21:11:39,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:39,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:39,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:39,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725433556] [2019-10-13 21:11:39,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:39,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:39,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958669648] [2019-10-13 21:11:39,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:39,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:39,695 INFO L87 Difference]: Start difference. First operand 567 states and 898 transitions. Second operand 5 states. [2019-10-13 21:11:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:39,781 INFO L93 Difference]: Finished difference Result 1104 states and 1768 transitions. [2019-10-13 21:11:39,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:39,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-10-13 21:11:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:39,787 INFO L225 Difference]: With dead ends: 1104 [2019-10-13 21:11:39,788 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:11:39,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:11:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-10-13 21:11:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-10-13 21:11:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 897 transitions. [2019-10-13 21:11:39,820 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 897 transitions. Word has length 119 [2019-10-13 21:11:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:39,821 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 897 transitions. [2019-10-13 21:11:39,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 897 transitions. [2019-10-13 21:11:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 21:11:39,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:39,826 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:39,826 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:39,827 INFO L82 PathProgramCache]: Analyzing trace with hash -161455577, now seen corresponding path program 1 times [2019-10-13 21:11:39,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:39,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991911609] [2019-10-13 21:11:39,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:39,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:39,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:39,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991911609] [2019-10-13 21:11:39,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:39,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:39,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213551881] [2019-10-13 21:11:39,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:39,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:39,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:39,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:40,000 INFO L87 Difference]: Start difference. First operand 567 states and 897 transitions. Second operand 5 states. [2019-10-13 21:11:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:40,075 INFO L93 Difference]: Finished difference Result 1104 states and 1766 transitions. [2019-10-13 21:11:40,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:40,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-10-13 21:11:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:40,082 INFO L225 Difference]: With dead ends: 1104 [2019-10-13 21:11:40,082 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:11:40,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:11:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-10-13 21:11:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-10-13 21:11:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 896 transitions. [2019-10-13 21:11:40,111 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 896 transitions. Word has length 120 [2019-10-13 21:11:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:40,111 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 896 transitions. [2019-10-13 21:11:40,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 896 transitions. [2019-10-13 21:11:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 21:11:40,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:40,115 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:40,115 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:40,115 INFO L82 PathProgramCache]: Analyzing trace with hash -158807839, now seen corresponding path program 1 times [2019-10-13 21:11:40,116 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:40,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608532076] [2019-10-13 21:11:40,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:40,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608532076] [2019-10-13 21:11:40,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:40,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:40,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810619362] [2019-10-13 21:11:40,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:40,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:40,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:40,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:40,331 INFO L87 Difference]: Start difference. First operand 567 states and 896 transitions. Second operand 5 states. [2019-10-13 21:11:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:40,412 INFO L93 Difference]: Finished difference Result 1104 states and 1764 transitions. [2019-10-13 21:11:40,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:40,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-10-13 21:11:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:40,418 INFO L225 Difference]: With dead ends: 1104 [2019-10-13 21:11:40,418 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:11:40,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:11:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-10-13 21:11:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-10-13 21:11:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 895 transitions. [2019-10-13 21:11:40,452 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 895 transitions. Word has length 121 [2019-10-13 21:11:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:40,453 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 895 transitions. [2019-10-13 21:11:40,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 895 transitions. [2019-10-13 21:11:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 21:11:40,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:40,459 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:40,459 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash 399449218, now seen corresponding path program 1 times [2019-10-13 21:11:40,460 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:40,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085197825] [2019-10-13 21:11:40,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:40,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085197825] [2019-10-13 21:11:40,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:40,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:40,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397848346] [2019-10-13 21:11:40,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:40,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:40,618 INFO L87 Difference]: Start difference. First operand 567 states and 895 transitions. Second operand 5 states. [2019-10-13 21:11:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:40,696 INFO L93 Difference]: Finished difference Result 1104 states and 1762 transitions. [2019-10-13 21:11:40,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:40,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-10-13 21:11:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:40,705 INFO L225 Difference]: With dead ends: 1104 [2019-10-13 21:11:40,705 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:11:40,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:11:40,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-10-13 21:11:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-10-13 21:11:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 894 transitions. [2019-10-13 21:11:40,742 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 894 transitions. Word has length 122 [2019-10-13 21:11:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:40,743 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 894 transitions. [2019-10-13 21:11:40,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 894 transitions. [2019-10-13 21:11:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 21:11:40,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:40,748 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:40,749 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1001725980, now seen corresponding path program 1 times [2019-10-13 21:11:40,750 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:40,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41503096] [2019-10-13 21:11:40,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:41,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41503096] [2019-10-13 21:11:41,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838938404] [2019-10-13 21:11:41,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:41,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:41,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:41,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:42,015 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:42,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:42,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716724282] [2019-10-13 21:11:42,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:42,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:42,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:42,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:42,018 INFO L87 Difference]: Start difference. First operand 567 states and 894 transitions. Second operand 3 states. [2019-10-13 21:11:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:42,108 INFO L93 Difference]: Finished difference Result 1577 states and 2540 transitions. [2019-10-13 21:11:42,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:42,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-13 21:11:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:42,117 INFO L225 Difference]: With dead ends: 1577 [2019-10-13 21:11:42,118 INFO L226 Difference]: Without dead ends: 1044 [2019-10-13 21:11:42,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-13 21:11:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1031. [2019-10-13 21:11:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 21:11:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1649 transitions. [2019-10-13 21:11:42,172 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1649 transitions. Word has length 123 [2019-10-13 21:11:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:42,175 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1649 transitions. [2019-10-13 21:11:42,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1649 transitions. [2019-10-13 21:11:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 21:11:42,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:42,180 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:42,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:42,388 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:42,389 INFO L82 PathProgramCache]: Analyzing trace with hash -134098458, now seen corresponding path program 1 times [2019-10-13 21:11:42,389 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:42,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684139880] [2019-10-13 21:11:42,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:42,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684139880] [2019-10-13 21:11:42,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582097978] [2019-10-13 21:11:42,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:43,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:43,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:43,426 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:43,554 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:43,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:43,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337047936] [2019-10-13 21:11:43,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:43,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:43,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:43,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:43,557 INFO L87 Difference]: Start difference. First operand 1031 states and 1649 transitions. Second operand 3 states. [2019-10-13 21:11:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:43,660 INFO L93 Difference]: Finished difference Result 2505 states and 4052 transitions. [2019-10-13 21:11:43,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:43,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-10-13 21:11:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:43,674 INFO L225 Difference]: With dead ends: 2505 [2019-10-13 21:11:43,674 INFO L226 Difference]: Without dead ends: 1508 [2019-10-13 21:11:43,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2019-10-13 21:11:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1459. [2019-10-13 21:11:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2019-10-13 21:11:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2357 transitions. [2019-10-13 21:11:43,761 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2357 transitions. Word has length 124 [2019-10-13 21:11:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:43,762 INFO L462 AbstractCegarLoop]: Abstraction has 1459 states and 2357 transitions. [2019-10-13 21:11:43,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2357 transitions. [2019-10-13 21:11:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 21:11:43,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:43,768 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:43,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:43,977 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -267534477, now seen corresponding path program 1 times [2019-10-13 21:11:43,978 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:43,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664334088] [2019-10-13 21:11:43,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:44,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664334088] [2019-10-13 21:11:44,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:44,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:44,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676973726] [2019-10-13 21:11:44,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:44,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:44,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:44,134 INFO L87 Difference]: Start difference. First operand 1459 states and 2357 transitions. Second operand 7 states. [2019-10-13 21:11:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:46,906 INFO L93 Difference]: Finished difference Result 4299 states and 7110 transitions. [2019-10-13 21:11:46,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:11:46,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2019-10-13 21:11:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:46,931 INFO L225 Difference]: With dead ends: 4299 [2019-10-13 21:11:46,931 INFO L226 Difference]: Without dead ends: 2874 [2019-10-13 21:11:46,944 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:11:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2019-10-13 21:11:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2804. [2019-10-13 21:11:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2804 states. [2019-10-13 21:11:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4625 transitions. [2019-10-13 21:11:47,116 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4625 transitions. Word has length 126 [2019-10-13 21:11:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:47,117 INFO L462 AbstractCegarLoop]: Abstraction has 2804 states and 4625 transitions. [2019-10-13 21:11:47,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4625 transitions. [2019-10-13 21:11:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 21:11:47,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:47,128 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:47,128 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash -340723709, now seen corresponding path program 1 times [2019-10-13 21:11:47,129 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:47,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553782921] [2019-10-13 21:11:47,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:47,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:47,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:47,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553782921] [2019-10-13 21:11:47,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63731452] [2019-10-13 21:11:47,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:48,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:11:48,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:48,074 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:48,223 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:48,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [11] total 14 [2019-10-13 21:11:48,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818030778] [2019-10-13 21:11:48,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:48,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:48,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:11:48,228 INFO L87 Difference]: Start difference. First operand 2804 states and 4625 transitions. Second operand 5 states. [2019-10-13 21:11:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:50,582 INFO L93 Difference]: Finished difference Result 12876 states and 21499 transitions. [2019-10-13 21:11:50,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:50,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-10-13 21:11:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:50,685 INFO L225 Difference]: With dead ends: 12876 [2019-10-13 21:11:50,686 INFO L226 Difference]: Without dead ends: 10107 [2019-10-13 21:11:50,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:11:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2019-10-13 21:11:51,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 9987. [2019-10-13 21:11:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2019-10-13 21:11:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 16352 transitions. [2019-10-13 21:11:51,225 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 16352 transitions. Word has length 127 [2019-10-13 21:11:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:51,225 INFO L462 AbstractCegarLoop]: Abstraction has 9987 states and 16352 transitions. [2019-10-13 21:11:51,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 16352 transitions. [2019-10-13 21:11:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 21:11:51,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:51,235 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:51,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:51,442 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash 474491256, now seen corresponding path program 1 times [2019-10-13 21:11:51,444 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:51,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014632524] [2019-10-13 21:11:51,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:51,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014632524] [2019-10-13 21:11:51,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24134494] [2019-10-13 21:11:51,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:52,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:11:52,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:52,376 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:52,494 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:52,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 11 [2019-10-13 21:11:52,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448736551] [2019-10-13 21:11:52,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:52,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:52,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:52,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:11:52,497 INFO L87 Difference]: Start difference. First operand 9987 states and 16352 transitions. Second operand 3 states. [2019-10-13 21:11:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:53,222 INFO L93 Difference]: Finished difference Result 27678 states and 45753 transitions. [2019-10-13 21:11:53,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:53,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-10-13 21:11:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:53,406 INFO L225 Difference]: With dead ends: 27678 [2019-10-13 21:11:53,406 INFO L226 Difference]: Without dead ends: 17810 [2019-10-13 21:11:53,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:11:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2019-10-13 21:11:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 17644. [2019-10-13 21:11:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17644 states. [2019-10-13 21:11:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17644 states to 17644 states and 28913 transitions. [2019-10-13 21:11:55,318 INFO L78 Accepts]: Start accepts. Automaton has 17644 states and 28913 transitions. Word has length 132 [2019-10-13 21:11:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,318 INFO L462 AbstractCegarLoop]: Abstraction has 17644 states and 28913 transitions. [2019-10-13 21:11:55,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17644 states and 28913 transitions. [2019-10-13 21:11:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 21:11:55,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,326 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:55,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:55,535 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,536 INFO L82 PathProgramCache]: Analyzing trace with hash -805372422, now seen corresponding path program 1 times [2019-10-13 21:11:55,536 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625957180] [2019-10-13 21:11:55,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:55,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625957180] [2019-10-13 21:11:55,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466346729] [2019-10-13 21:11:55,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:56,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:11:56,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:56,351 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:56,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:11:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:56,611 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:56,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 21:11:56,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135617640] [2019-10-13 21:11:56,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:11:56,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:11:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:11:56,613 INFO L87 Difference]: Start difference. First operand 17644 states and 28913 transitions. Second operand 11 states. [2019-10-13 21:12:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:00,991 INFO L93 Difference]: Finished difference Result 44110 states and 73008 transitions. [2019-10-13 21:12:00,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:12:00,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 132 [2019-10-13 21:12:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:01,235 INFO L225 Difference]: With dead ends: 44110 [2019-10-13 21:12:01,235 INFO L226 Difference]: Without dead ends: 26500 [2019-10-13 21:12:01,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:12:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26500 states.