/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:41:46,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:41:46,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:41:46,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:41:46,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:41:46,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:41:46,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:41:46,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:41:46,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:41:46,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:41:46,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:41:46,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:41:46,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:41:46,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:41:46,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:41:46,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:41:46,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:41:46,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:41:46,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:41:46,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:41:46,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:41:46,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:41:46,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:41:46,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:41:46,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:41:46,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:41:46,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:41:46,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:41:46,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:41:46,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:41:46,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:41:46,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:41:46,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:41:46,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:41:46,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:41:46,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:41:46,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:41:46,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:41:46,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:41:46,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:41:46,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:41:46,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:41:46,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:41:46,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:41:46,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:41:46,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:41:46,806 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:41:46,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:41:46,806 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:41:46,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:41:46,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:41:46,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:41:46,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:41:46,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:41:46,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:41:46,808 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:41:46,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:41:46,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:41:46,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:41:46,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:41:46,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:41:46,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:41:46,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:41:46,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:41:46,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:41:46,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:41:46,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:41:46,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:41:46,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:41:46,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:41:46,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:41:47,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:41:47,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:41:47,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:41:47,120 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:41:47,121 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:41:47,121 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-11-07 00:41:47,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f228d783f/d946e810338c47e89932722898e43b6a/FLAG4a128d437 [2019-11-07 00:41:47,837 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:41:47,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-11-07 00:41:47,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f228d783f/d946e810338c47e89932722898e43b6a/FLAG4a128d437 [2019-11-07 00:41:48,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f228d783f/d946e810338c47e89932722898e43b6a [2019-11-07 00:41:48,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:41:48,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:41:48,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:41:48,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:41:48,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:41:48,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:41:48" (1/1) ... [2019-11-07 00:41:48,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5ada37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:48, skipping insertion in model container [2019-11-07 00:41:48,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:41:48" (1/1) ... [2019-11-07 00:41:48,126 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:41:48,206 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:41:48,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:41:48,922 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:41:49,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:41:49,124 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:41:49,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49 WrapperNode [2019-11-07 00:41:49,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:41:49,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:41:49,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:41:49,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:41:49,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:41:49,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:41:49,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:41:49,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:41:49,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:41:49,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:41:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:41:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:41:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:41:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:41:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:41:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:41:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:41:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:41:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:41:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:41:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:41:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:41:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:41:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:41:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:41:49,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:41:49,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:41:49,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:41:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:41:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:41:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:41:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:41:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:41:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:41:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:41:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:41:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:41:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:41:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:41:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:41:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:41:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:41:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:41:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:41:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:41:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:41:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:41:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:41:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:41:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:41:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:41:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:41:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:41:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:41:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:41:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:41:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:41:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:41:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:41:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:41:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:41:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:41:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:41:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:41:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:41:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:41:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:41:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:41:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:41:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:41:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:41:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:41:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:41:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:41:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:41:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:41:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:41:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:41:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:41:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:41:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:41:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:41:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:41:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:41:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:41:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:41:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:41:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:41:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:41:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:41:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:41:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:41:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:41:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:41:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:41:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:41:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:41:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:41:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:41:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:41:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:41:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:41:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:41:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:41:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:41:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:41:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:41:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:41:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:41:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:41:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:41:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:41:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:41:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:41:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:41:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:41:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:41:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:41:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:41:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:41:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:41:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:41:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:41:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:41:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:41:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:41:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:41:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:41:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:41:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:41:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:41:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:41:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:41:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:41:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:41:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:41:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:41:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:41:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:41:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:41:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:41:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:41:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:41:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:41:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:41:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:41:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:41:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:41:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:41:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:41:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:41:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:41:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:41:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:41:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:41:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:41:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:41:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:41:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:41:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:41:51,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:41:52,000 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:41:52,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:41:52 BoogieIcfgContainer [2019-11-07 00:41:52,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:41:52,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:41:52,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:41:52,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:41:52,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:41:48" (1/3) ... [2019-11-07 00:41:52,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb65bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:41:52, skipping insertion in model container [2019-11-07 00:41:52,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49" (2/3) ... [2019-11-07 00:41:52,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb65bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:41:52, skipping insertion in model container [2019-11-07 00:41:52,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:41:52" (3/3) ... [2019-11-07 00:41:52,011 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2019-11-07 00:41:52,021 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:41:52,032 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:41:52,044 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:41:52,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:41:52,096 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:41:52,096 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:41:52,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:41:52,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:41:52,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:41:52,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:41:52,097 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:41:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states. [2019-11-07 00:41:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-07 00:41:52,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:52,177 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:52,180 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1835526368, now seen corresponding path program 1 times [2019-11-07 00:41:52,197 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:52,197 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946772709] [2019-11-07 00:41:52,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:52,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946772709] [2019-11-07 00:41:52,862 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:52,862 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:52,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071873573] [2019-11-07 00:41:52,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:52,871 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:52,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:52,889 INFO L87 Difference]: Start difference. First operand 742 states. Second operand 4 states. [2019-11-07 00:41:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:53,191 INFO L93 Difference]: Finished difference Result 1147 states and 1871 transitions. [2019-11-07 00:41:53,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:53,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-11-07 00:41:53,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:53,229 INFO L225 Difference]: With dead ends: 1147 [2019-11-07 00:41:53,229 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:41:53,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:41:53,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:41:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2019-11-07 00:41:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-11-07 00:41:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 937 transitions. [2019-11-07 00:41:53,370 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 937 transitions. Word has length 107 [2019-11-07 00:41:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:53,371 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 937 transitions. [2019-11-07 00:41:53,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 937 transitions. [2019-11-07 00:41:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-07 00:41:53,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:53,378 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:53,378 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 443776321, now seen corresponding path program 1 times [2019-11-07 00:41:53,379 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:53,379 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899272462] [2019-11-07 00:41:53,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:53,562 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899272462] [2019-11-07 00:41:53,562 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:53,562 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:53,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470317427] [2019-11-07 00:41:53,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:53,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:53,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:53,578 INFO L87 Difference]: Start difference. First operand 582 states and 937 transitions. Second operand 4 states. [2019-11-07 00:41:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:53,674 INFO L93 Difference]: Finished difference Result 1127 states and 1832 transitions. [2019-11-07 00:41:53,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:53,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2019-11-07 00:41:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:53,683 INFO L225 Difference]: With dead ends: 1127 [2019-11-07 00:41:53,684 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:41:53,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:41:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:41:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2019-11-07 00:41:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-11-07 00:41:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 936 transitions. [2019-11-07 00:41:53,730 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 936 transitions. Word has length 110 [2019-11-07 00:41:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:53,732 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 936 transitions. [2019-11-07 00:41:53,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 936 transitions. [2019-11-07 00:41:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-07 00:41:53,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:53,749 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:53,750 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash 15474447, now seen corresponding path program 1 times [2019-11-07 00:41:53,751 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:53,752 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995119200] [2019-11-07 00:41:53,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:54,006 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995119200] [2019-11-07 00:41:54,006 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:54,006 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:54,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400128770] [2019-11-07 00:41:54,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:54,007 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:54,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:54,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:54,008 INFO L87 Difference]: Start difference. First operand 582 states and 936 transitions. Second operand 4 states. [2019-11-07 00:41:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:54,122 INFO L93 Difference]: Finished difference Result 1127 states and 1831 transitions. [2019-11-07 00:41:54,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:54,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2019-11-07 00:41:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:54,130 INFO L225 Difference]: With dead ends: 1127 [2019-11-07 00:41:54,130 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:41:54,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:41:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:41:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2019-11-07 00:41:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-11-07 00:41:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 935 transitions. [2019-11-07 00:41:54,176 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 935 transitions. Word has length 111 [2019-11-07 00:41:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:54,177 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 935 transitions. [2019-11-07 00:41:54,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 935 transitions. [2019-11-07 00:41:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 00:41:54,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:54,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:54,185 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1301085565, now seen corresponding path program 1 times [2019-11-07 00:41:54,185 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:54,186 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155689175] [2019-11-07 00:41:54,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:54,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155689175] [2019-11-07 00:41:54,359 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:54,359 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:54,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312732971] [2019-11-07 00:41:54,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:54,360 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:54,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:54,361 INFO L87 Difference]: Start difference. First operand 582 states and 935 transitions. Second operand 4 states. [2019-11-07 00:41:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:54,434 INFO L93 Difference]: Finished difference Result 1127 states and 1830 transitions. [2019-11-07 00:41:54,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:54,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-11-07 00:41:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:54,442 INFO L225 Difference]: With dead ends: 1127 [2019-11-07 00:41:54,443 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:41:54,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:41:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:41:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2019-11-07 00:41:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-11-07 00:41:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 934 transitions. [2019-11-07 00:41:54,473 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 934 transitions. Word has length 112 [2019-11-07 00:41:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:54,474 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 934 transitions. [2019-11-07 00:41:54,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 934 transitions. [2019-11-07 00:41:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 00:41:54,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:54,479 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:54,479 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash -116575413, now seen corresponding path program 1 times [2019-11-07 00:41:54,480 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:54,481 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192123677] [2019-11-07 00:41:54,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:54,621 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192123677] [2019-11-07 00:41:54,621 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:54,621 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:54,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281741291] [2019-11-07 00:41:54,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:54,623 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:54,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:54,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:54,624 INFO L87 Difference]: Start difference. First operand 582 states and 934 transitions. Second operand 4 states. [2019-11-07 00:41:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:54,690 INFO L93 Difference]: Finished difference Result 1127 states and 1829 transitions. [2019-11-07 00:41:54,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:54,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-11-07 00:41:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:54,702 INFO L225 Difference]: With dead ends: 1127 [2019-11-07 00:41:54,702 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:41:54,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:41:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:41:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2019-11-07 00:41:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-11-07 00:41:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 933 transitions. [2019-11-07 00:41:54,734 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 933 transitions. Word has length 113 [2019-11-07 00:41:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:54,735 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 933 transitions. [2019-11-07 00:41:54,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 933 transitions. [2019-11-07 00:41:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 00:41:54,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:54,741 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:54,741 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash 563674553, now seen corresponding path program 1 times [2019-11-07 00:41:54,742 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:54,742 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787967461] [2019-11-07 00:41:54,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:54,998 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787967461] [2019-11-07 00:41:54,999 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,000 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:41:55,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422422746] [2019-11-07 00:41:55,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:41:55,001 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:41:55,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:41:55,002 INFO L87 Difference]: Start difference. First operand 582 states and 933 transitions. Second operand 10 states. [2019-11-07 00:41:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:55,226 INFO L93 Difference]: Finished difference Result 1085 states and 1749 transitions. [2019-11-07 00:41:55,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:41:55,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2019-11-07 00:41:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:55,236 INFO L225 Difference]: With dead ends: 1085 [2019-11-07 00:41:55,238 INFO L226 Difference]: Without dead ends: 591 [2019-11-07 00:41:55,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:41:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-07 00:41:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2019-11-07 00:41:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:41:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 942 transitions. [2019-11-07 00:41:55,277 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 942 transitions. Word has length 114 [2019-11-07 00:41:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:55,278 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 942 transitions. [2019-11-07 00:41:55,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:41:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 942 transitions. [2019-11-07 00:41:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 00:41:55,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:55,286 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:55,286 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash 983191384, now seen corresponding path program 1 times [2019-11-07 00:41:55,287 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:55,287 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025957124] [2019-11-07 00:41:55,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:55,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025957124] [2019-11-07 00:41:55,399 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,399 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:55,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845936098] [2019-11-07 00:41:55,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:55,400 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:55,401 INFO L87 Difference]: Start difference. First operand 589 states and 942 transitions. Second operand 4 states. [2019-11-07 00:41:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:55,462 INFO L93 Difference]: Finished difference Result 1133 states and 1835 transitions. [2019-11-07 00:41:55,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:55,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-11-07 00:41:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:55,469 INFO L225 Difference]: With dead ends: 1133 [2019-11-07 00:41:55,469 INFO L226 Difference]: Without dead ends: 576 [2019-11-07 00:41:55,472 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:41:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-07 00:41:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-11-07 00:41:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-11-07 00:41:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 919 transitions. [2019-11-07 00:41:55,494 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 919 transitions. Word has length 114 [2019-11-07 00:41:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:55,494 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 919 transitions. [2019-11-07 00:41:55,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 919 transitions. [2019-11-07 00:41:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-07 00:41:55,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:55,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:55,499 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:55,499 INFO L82 PathProgramCache]: Analyzing trace with hash 881745063, now seen corresponding path program 1 times [2019-11-07 00:41:55,499 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:55,499 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875444516] [2019-11-07 00:41:55,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:55,633 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875444516] [2019-11-07 00:41:55,633 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,633 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:55,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836224708] [2019-11-07 00:41:55,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:55,634 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:55,635 INFO L87 Difference]: Start difference. First operand 576 states and 919 transitions. Second operand 6 states. [2019-11-07 00:41:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:55,889 INFO L93 Difference]: Finished difference Result 1073 states and 1727 transitions. [2019-11-07 00:41:55,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:55,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2019-11-07 00:41:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:55,895 INFO L225 Difference]: With dead ends: 1073 [2019-11-07 00:41:55,895 INFO L226 Difference]: Without dead ends: 576 [2019-11-07 00:41:55,898 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:41:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-07 00:41:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-11-07 00:41:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-11-07 00:41:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 915 transitions. [2019-11-07 00:41:55,921 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 915 transitions. Word has length 115 [2019-11-07 00:41:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:55,921 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 915 transitions. [2019-11-07 00:41:55,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 915 transitions. [2019-11-07 00:41:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-07 00:41:55,925 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:55,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:55,926 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:55,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2138395236, now seen corresponding path program 1 times [2019-11-07 00:41:55,926 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:55,927 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327019764] [2019-11-07 00:41:55,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:56,108 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327019764] [2019-11-07 00:41:56,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:56,110 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:56,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101238458] [2019-11-07 00:41:56,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:56,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:56,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:56,112 INFO L87 Difference]: Start difference. First operand 576 states and 915 transitions. Second operand 6 states. [2019-11-07 00:41:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:56,320 INFO L93 Difference]: Finished difference Result 1073 states and 1723 transitions. [2019-11-07 00:41:56,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:56,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-11-07 00:41:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:56,326 INFO L225 Difference]: With dead ends: 1073 [2019-11-07 00:41:56,326 INFO L226 Difference]: Without dead ends: 576 [2019-11-07 00:41:56,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:41:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-07 00:41:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-11-07 00:41:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-11-07 00:41:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 911 transitions. [2019-11-07 00:41:56,360 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 911 transitions. Word has length 116 [2019-11-07 00:41:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:56,361 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 911 transitions. [2019-11-07 00:41:56,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 911 transitions. [2019-11-07 00:41:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 00:41:56,366 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:56,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:56,367 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash 603126668, now seen corresponding path program 1 times [2019-11-07 00:41:56,367 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:56,368 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914633774] [2019-11-07 00:41:56,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:56,523 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914633774] [2019-11-07 00:41:56,524 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:56,524 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:56,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670591451] [2019-11-07 00:41:56,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:56,525 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:56,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:56,526 INFO L87 Difference]: Start difference. First operand 576 states and 911 transitions. Second operand 6 states. [2019-11-07 00:41:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:56,708 INFO L93 Difference]: Finished difference Result 1073 states and 1719 transitions. [2019-11-07 00:41:56,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:56,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2019-11-07 00:41:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:56,714 INFO L225 Difference]: With dead ends: 1073 [2019-11-07 00:41:56,714 INFO L226 Difference]: Without dead ends: 576 [2019-11-07 00:41:56,717 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:41:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-07 00:41:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-11-07 00:41:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-11-07 00:41:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 907 transitions. [2019-11-07 00:41:56,743 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 907 transitions. Word has length 117 [2019-11-07 00:41:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:56,743 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 907 transitions. [2019-11-07 00:41:56,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 907 transitions. [2019-11-07 00:41:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 00:41:56,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:56,748 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:56,748 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1057986572, now seen corresponding path program 1 times [2019-11-07 00:41:56,749 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:56,749 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528413036] [2019-11-07 00:41:56,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:56,907 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528413036] [2019-11-07 00:41:56,907 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:56,907 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:41:56,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161318685] [2019-11-07 00:41:56,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:41:56,908 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:41:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:41:56,909 INFO L87 Difference]: Start difference. First operand 576 states and 907 transitions. Second operand 7 states. [2019-11-07 00:41:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:56,999 INFO L93 Difference]: Finished difference Result 1073 states and 1715 transitions. [2019-11-07 00:41:57,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:41:57,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-11-07 00:41:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,005 INFO L225 Difference]: With dead ends: 1073 [2019-11-07 00:41:57,005 INFO L226 Difference]: Without dead ends: 555 [2019-11-07 00:41:57,008 INFO L630 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 [2019-11-07 00:41:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-07 00:41:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2019-11-07 00:41:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2019-11-07 00:41:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 873 transitions. [2019-11-07 00:41:57,033 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 873 transitions. Word has length 117 [2019-11-07 00:41:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,033 INFO L462 AbstractCegarLoop]: Abstraction has 555 states and 873 transitions. [2019-11-07 00:41:57,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:41:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 873 transitions. [2019-11-07 00:41:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 00:41:57,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:57,038 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:57,038 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:57,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1567550433, now seen corresponding path program 1 times [2019-11-07 00:41:57,039 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:57,039 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921541140] [2019-11-07 00:41:57,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:57,215 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921541140] [2019-11-07 00:41:57,216 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:57,216 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:57,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497101441] [2019-11-07 00:41:57,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:57,217 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:57,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:57,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:57,217 INFO L87 Difference]: Start difference. First operand 555 states and 873 transitions. Second operand 6 states. [2019-11-07 00:41:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:57,358 INFO L93 Difference]: Finished difference Result 1052 states and 1681 transitions. [2019-11-07 00:41:57,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:57,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2019-11-07 00:41:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,366 INFO L225 Difference]: With dead ends: 1052 [2019-11-07 00:41:57,366 INFO L226 Difference]: Without dead ends: 555 [2019-11-07 00:41:57,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:41:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-07 00:41:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2019-11-07 00:41:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2019-11-07 00:41:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 872 transitions. [2019-11-07 00:41:57,398 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 872 transitions. Word has length 118 [2019-11-07 00:41:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,399 INFO L462 AbstractCegarLoop]: Abstraction has 555 states and 872 transitions. [2019-11-07 00:41:57,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 872 transitions. [2019-11-07 00:41:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 00:41:57,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:57,405 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:57,406 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1018460559, now seen corresponding path program 1 times [2019-11-07 00:41:57,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:57,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548223044] [2019-11-07 00:41:57,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:57,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548223044] [2019-11-07 00:41:57,585 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:57,586 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:57,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186962925] [2019-11-07 00:41:57,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:57,587 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:57,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:57,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:57,588 INFO L87 Difference]: Start difference. First operand 555 states and 872 transitions. Second operand 6 states. [2019-11-07 00:41:57,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:57,724 INFO L93 Difference]: Finished difference Result 1052 states and 1680 transitions. [2019-11-07 00:41:57,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:57,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-11-07 00:41:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,732 INFO L225 Difference]: With dead ends: 1052 [2019-11-07 00:41:57,733 INFO L226 Difference]: Without dead ends: 555 [2019-11-07 00:41:57,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:41:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-07 00:41:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2019-11-07 00:41:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2019-11-07 00:41:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 871 transitions. [2019-11-07 00:41:57,762 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 871 transitions. Word has length 119 [2019-11-07 00:41:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,763 INFO L462 AbstractCegarLoop]: Abstraction has 555 states and 871 transitions. [2019-11-07 00:41:57,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 871 transitions. [2019-11-07 00:41:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 00:41:57,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:57,767 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:57,767 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1998799322, now seen corresponding path program 1 times [2019-11-07 00:41:57,768 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:57,768 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567584482] [2019-11-07 00:41:57,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:57,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567584482] [2019-11-07 00:41:57,989 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:57,989 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:41:57,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389342687] [2019-11-07 00:41:57,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:41:57,990 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:57,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:41:57,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:41:57,991 INFO L87 Difference]: Start difference. First operand 555 states and 871 transitions. Second operand 12 states. [2019-11-07 00:41:58,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:58,173 INFO L93 Difference]: Finished difference Result 1053 states and 1679 transitions. [2019-11-07 00:41:58,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:41:58,173 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2019-11-07 00:41:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:58,178 INFO L225 Difference]: With dead ends: 1053 [2019-11-07 00:41:58,179 INFO L226 Difference]: Without dead ends: 555 [2019-11-07 00:41:58,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:41:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-07 00:41:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2019-11-07 00:41:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2019-11-07 00:41:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 870 transitions. [2019-11-07 00:41:58,278 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 870 transitions. Word has length 120 [2019-11-07 00:41:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:58,279 INFO L462 AbstractCegarLoop]: Abstraction has 555 states and 870 transitions. [2019-11-07 00:41:58,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:41:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 870 transitions. [2019-11-07 00:41:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 00:41:58,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:58,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:41:58,283 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:58,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:58,284 INFO L82 PathProgramCache]: Analyzing trace with hash 504527096, now seen corresponding path program 1 times [2019-11-07 00:41:58,284 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:58,284 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658461679] [2019-11-07 00:41:58,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:41:58,455 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658461679] [2019-11-07 00:41:58,455 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:58,455 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:41:58,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548318555] [2019-11-07 00:41:58,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:41:58,456 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:58,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:41:58,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:41:58,457 INFO L87 Difference]: Start difference. First operand 555 states and 870 transitions. Second operand 9 states. [2019-11-07 00:42:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:02,163 INFO L93 Difference]: Finished difference Result 1050 states and 1693 transitions. [2019-11-07 00:42:02,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:42:02,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2019-11-07 00:42:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:02,171 INFO L225 Difference]: With dead ends: 1050 [2019-11-07 00:42:02,171 INFO L226 Difference]: Without dead ends: 561 [2019-11-07 00:42:02,176 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:42:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2019-11-07 00:42:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 559. [2019-11-07 00:42:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2019-11-07 00:42:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 889 transitions. [2019-11-07 00:42:02,227 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 889 transitions. Word has length 121 [2019-11-07 00:42:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:02,227 INFO L462 AbstractCegarLoop]: Abstraction has 559 states and 889 transitions. [2019-11-07 00:42:02,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:42:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 889 transitions. [2019-11-07 00:42:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 00:42:02,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:02,232 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:02,232 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:02,232 INFO L82 PathProgramCache]: Analyzing trace with hash -250381492, now seen corresponding path program 1 times [2019-11-07 00:42:02,232 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:02,233 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906725810] [2019-11-07 00:42:02,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:02,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906725810] [2019-11-07 00:42:02,468 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:02,468 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:42:02,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012922700] [2019-11-07 00:42:02,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:42:02,471 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:02,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:42:02,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:02,472 INFO L87 Difference]: Start difference. First operand 559 states and 889 transitions. Second operand 8 states. [2019-11-07 00:42:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:08,416 INFO L93 Difference]: Finished difference Result 1962 states and 3248 transitions. [2019-11-07 00:42:08,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:42:08,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2019-11-07 00:42:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:08,430 INFO L225 Difference]: With dead ends: 1962 [2019-11-07 00:42:08,430 INFO L226 Difference]: Without dead ends: 1469 [2019-11-07 00:42:08,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:42:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2019-11-07 00:42:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1430. [2019-11-07 00:42:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2019-11-07 00:42:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2296 transitions. [2019-11-07 00:42:08,502 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2296 transitions. Word has length 122 [2019-11-07 00:42:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:08,503 INFO L462 AbstractCegarLoop]: Abstraction has 1430 states and 2296 transitions. [2019-11-07 00:42:08,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:42:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2296 transitions. [2019-11-07 00:42:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:42:08,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:08,506 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:08,506 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:08,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1214123081, now seen corresponding path program 1 times [2019-11-07 00:42:08,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:08,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718362747] [2019-11-07 00:42:08,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:08,686 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718362747] [2019-11-07 00:42:08,687 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:08,687 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:42:08,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248493860] [2019-11-07 00:42:08,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:42:08,688 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:42:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:42:08,689 INFO L87 Difference]: Start difference. First operand 1430 states and 2296 transitions. Second operand 9 states. [2019-11-07 00:42:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:16,222 INFO L93 Difference]: Finished difference Result 4504 states and 7422 transitions. [2019-11-07 00:42:16,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 00:42:16,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2019-11-07 00:42:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:16,260 INFO L225 Difference]: With dead ends: 4504 [2019-11-07 00:42:16,261 INFO L226 Difference]: Without dead ends: 3140 [2019-11-07 00:42:16,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:42:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2019-11-07 00:42:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2917. [2019-11-07 00:42:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2019-11-07 00:42:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4711 transitions. [2019-11-07 00:42:16,461 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4711 transitions. Word has length 128 [2019-11-07 00:42:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:16,462 INFO L462 AbstractCegarLoop]: Abstraction has 2917 states and 4711 transitions. [2019-11-07 00:42:16,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:42:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4711 transitions. [2019-11-07 00:42:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:42:16,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:16,465 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:16,465 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1206363722, now seen corresponding path program 1 times [2019-11-07 00:42:16,466 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:16,466 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600056800] [2019-11-07 00:42:16,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:16,613 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600056800] [2019-11-07 00:42:16,613 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:16,613 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:42:16,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810205398] [2019-11-07 00:42:16,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:42:16,614 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:16,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:42:16,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:16,615 INFO L87 Difference]: Start difference. First operand 2917 states and 4711 transitions. Second operand 5 states. [2019-11-07 00:42:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:19,224 INFO L93 Difference]: Finished difference Result 6396 states and 10301 transitions. [2019-11-07 00:42:19,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:19,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-11-07 00:42:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:19,255 INFO L225 Difference]: With dead ends: 6396 [2019-11-07 00:42:19,255 INFO L226 Difference]: Without dead ends: 4288 [2019-11-07 00:42:19,267 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:42:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2019-11-07 00:42:19,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 4261. [2019-11-07 00:42:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4261 states. [2019-11-07 00:42:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 6797 transitions. [2019-11-07 00:42:19,536 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 6797 transitions. Word has length 128 [2019-11-07 00:42:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:19,537 INFO L462 AbstractCegarLoop]: Abstraction has 4261 states and 6797 transitions. [2019-11-07 00:42:19,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:42:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 6797 transitions. [2019-11-07 00:42:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:42:19,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:19,543 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:19,544 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:19,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1039215732, now seen corresponding path program 1 times [2019-11-07 00:42:19,545 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:19,545 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726520670] [2019-11-07 00:42:19,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:19,729 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726520670] [2019-11-07 00:42:19,729 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:19,730 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:42:19,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257074847] [2019-11-07 00:42:19,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:42:19,731 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:19,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:42:19,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:42:19,731 INFO L87 Difference]: Start difference. First operand 4261 states and 6797 transitions. Second operand 7 states.