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 -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 04:19:38,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 04:19:38,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 04:19:38,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 04:19:38,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 04:19:38,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 04:19:38,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 04:19:38,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 04:19:38,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 04:19:38,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 04:19:38,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 04:19:38,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 04:19:38,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 04:19:38,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 04:19:38,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 04:19:38,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 04:19:38,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 04:19:38,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 04:19:38,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 04:19:38,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 04:19:38,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 04:19:38,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 04:19:38,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 04:19:38,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 04:19:38,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 04:19:38,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 04:19:38,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 04:19:38,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 04:19:38,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 04:19:38,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 04:19:38,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 04:19:38,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 04:19:38,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 04:19:38,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 04:19:38,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 04:19:38,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 04:19:38,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 04:19:38,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 04:19:38,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 04:19:38,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 04:19:38,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 04:19:38,484 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 [2019-09-08 04:19:38,509 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 04:19:38,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 04:19:38,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 04:19:38,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 04:19:38,512 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 04:19:38,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 04:19:38,513 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 04:19:38,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 04:19:38,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 04:19:38,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 04:19:38,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 04:19:38,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 04:19:38,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 04:19:38,515 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 04:19:38,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 04:19:38,516 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 04:19:38,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 04:19:38,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 04:19:38,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 04:19:38,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 04:19:38,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 04:19:38,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 04:19:38,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 04:19:38,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 04:19:38,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 04:19:38,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 04:19:38,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 04:19:38,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 04:19:38,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 04:19:38,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 04:19:38,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 04:19:38,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 04:19:38,587 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 04:19:38,587 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 04:19:38,588 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-09-08 04:19:38,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e76da26/d11f0f64a56845d08fd36e215af47a0a/FLAGb12efa3d8 [2019-09-08 04:19:39,365 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 04:19:39,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-09-08 04:19:39,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e76da26/d11f0f64a56845d08fd36e215af47a0a/FLAGb12efa3d8 [2019-09-08 04:19:39,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e76da26/d11f0f64a56845d08fd36e215af47a0a [2019-09-08 04:19:39,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 04:19:39,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 04:19:39,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 04:19:39,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 04:19:39,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 04:19:39,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:19:39" (1/1) ... [2019-09-08 04:19:39,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122e0d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:39, skipping insertion in model container [2019-09-08 04:19:39,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:19:39" (1/1) ... [2019-09-08 04:19:39,526 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 04:19:39,606 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 04:19:40,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:19:40,326 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 04:19:40,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:19:40,518 INFO L192 MainTranslator]: Completed translation [2019-09-08 04:19:40,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40 WrapperNode [2019-09-08 04:19:40,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 04:19:40,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 04:19:40,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 04:19:40,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 04:19:40,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... [2019-09-08 04:19:40,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 04:19:40,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 04:19:40,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 04:19:40,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 04:19:40,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 04:19:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 04:19:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 04:19:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-08 04:19:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-09-08 04:19:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-09-08 04:19:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-09-08 04:19:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-09-08 04:19:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-09-08 04:19:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-09-08 04:19:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-09-08 04:19:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-09-08 04:19:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-09-08 04:19:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-09-08 04:19:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-09-08 04:19:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-08 04:19:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-09-08 04:19:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-09-08 04:19:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-09-08 04:19:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-08 04:19:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-09-08 04:19:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-08 04:19:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-08 04:19:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 04:19:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-09-08 04:19:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-09-08 04:19:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:19:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:19:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-08 04:19:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-08 04:19:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-09-08 04:19:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-09-08 04:19:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-09-08 04:19:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-09-08 04:19:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-09-08 04:19:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-09-08 04:19:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-09-08 04:19:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-09-08 04:19:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-09-08 04:19:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-09-08 04:19:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-09-08 04:19:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-09-08 04:19:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-09-08 04:19:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-09-08 04:19:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-09-08 04:19:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-09-08 04:19:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-09-08 04:19:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-09-08 04:19:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-09-08 04:19:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-09-08 04:19:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-09-08 04:19:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-09-08 04:19:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-09-08 04:19:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-09-08 04:19:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-09-08 04:19:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-09-08 04:19:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-08 04:19:40,824 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-09-08 04:19:40,824 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-09-08 04:19:40,824 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-09-08 04:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-08 04:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-08 04:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-08 04:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-08 04:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-08 04:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-08 04:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-08 04:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-08 04:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-08 04:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-08 04:19:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-09-08 04:19:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-09-08 04:19:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-09-08 04:19:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-09-08 04:19:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-09-08 04:19:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-09-08 04:19:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-09-08 04:19:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-09-08 04:19:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 04:19:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 04:19:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-09-08 04:19:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-09-08 04:19:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-09-08 04:19:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 04:19:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-09-08 04:19:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-09-08 04:19:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-09-08 04:19:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-09-08 04:19:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-09-08 04:19:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-09-08 04:19:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-09-08 04:19:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-09-08 04:19:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-08 04:19:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-09-08 04:19:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-09-08 04:19:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-09-08 04:19:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-08 04:19:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-09-08 04:19:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-09-08 04:19:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-09-08 04:19:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-09-08 04:19:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-09-08 04:19:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-08 04:19:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-09-08 04:19:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-08 04:19:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-08 04:19:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-08 04:19:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-08 04:19:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-08 04:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-08 04:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 04:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-09-08 04:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-09-08 04:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-09-08 04:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-08 04:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-09-08 04:19:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-09-08 04:19:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-09-08 04:19:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:19:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:19:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-08 04:19:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-09-08 04:19:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-09-08 04:19:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-09-08 04:19:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-09-08 04:19:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-09-08 04:19:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-09-08 04:19:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-09-08 04:19:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-09-08 04:19:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-09-08 04:19:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-09-08 04:19:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-09-08 04:19:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-09-08 04:19:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-09-08 04:19:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-09-08 04:19:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-09-08 04:19:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-09-08 04:19:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-09-08 04:19:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-09-08 04:19:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-09-08 04:19:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-09-08 04:19:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-09-08 04:19:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-09-08 04:19:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-09-08 04:19:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-09-08 04:19:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-09-08 04:19:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-09-08 04:19:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 04:19:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-09-08 04:19:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-08 04:19:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 04:19:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 04:19:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-08 04:19:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 04:19:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 04:19:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 04:19:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 04:19:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-08 04:19:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 04:19:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-08 04:19:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-08 04:19:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 04:19:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-08 04:19:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-08 04:19:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-08 04:19:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-08 04:19:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-09-08 04:19:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 04:19:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-08 04:19:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 04:19:43,381 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 04:19:43,381 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-08 04:19:43,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:19:43 BoogieIcfgContainer [2019-09-08 04:19:43,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 04:19:43,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 04:19:43,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 04:19:43,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 04:19:43,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 04:19:39" (1/3) ... [2019-09-08 04:19:43,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:19:43, skipping insertion in model container [2019-09-08 04:19:43,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:19:40" (2/3) ... [2019-09-08 04:19:43,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:19:43, skipping insertion in model container [2019-09-08 04:19:43,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:19:43" (3/3) ... [2019-09-08 04:19:43,393 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2019-09-08 04:19:43,403 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 04:19:43,418 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 04:19:43,436 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 04:19:43,492 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 04:19:43,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 04:19:43,493 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 04:19:43,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 04:19:43,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 04:19:43,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 04:19:43,493 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 04:19:43,494 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 04:19:43,494 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 04:19:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states. [2019-09-08 04:19:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-08 04:19:43,570 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:43,571 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:43,576 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash -517745057, now seen corresponding path program 1 times [2019-09-08 04:19:43,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:43,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:43,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:43,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:43,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:44,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:44,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:19:44,303 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:19:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:19:44,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:19:44,321 INFO L87 Difference]: Start difference. First operand 828 states. Second operand 7 states. [2019-09-08 04:19:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:44,634 INFO L93 Difference]: Finished difference Result 1321 states and 2124 transitions. [2019-09-08 04:19:44,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:19:44,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-09-08 04:19:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:44,678 INFO L225 Difference]: With dead ends: 1321 [2019-09-08 04:19:44,678 INFO L226 Difference]: Without dead ends: 669 [2019-09-08 04:19:44,692 INFO L628 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 [2019-09-08 04:19:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-09-08 04:19:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2019-09-08 04:19:44,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2019-09-08 04:19:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1057 transitions. [2019-09-08 04:19:44,887 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1057 transitions. Word has length 93 [2019-09-08 04:19:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:44,888 INFO L475 AbstractCegarLoop]: Abstraction has 667 states and 1057 transitions. [2019-09-08 04:19:44,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:19:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1057 transitions. [2019-09-08 04:19:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-08 04:19:44,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:44,896 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:44,897 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:44,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1718929765, now seen corresponding path program 1 times [2019-09-08 04:19:44,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:44,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:44,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:44,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:45,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:45,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:19:45,171 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:19:45,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:19:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:19:45,172 INFO L87 Difference]: Start difference. First operand 667 states and 1057 transitions. Second operand 4 states. [2019-09-08 04:19:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:45,276 INFO L93 Difference]: Finished difference Result 1300 states and 2079 transitions. [2019-09-08 04:19:45,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 04:19:45,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-09-08 04:19:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:45,285 INFO L225 Difference]: With dead ends: 1300 [2019-09-08 04:19:45,285 INFO L226 Difference]: Without dead ends: 649 [2019-09-08 04:19:45,292 INFO L628 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 [2019-09-08 04:19:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-09-08 04:19:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2019-09-08 04:19:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-09-08 04:19:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1024 transitions. [2019-09-08 04:19:45,345 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1024 transitions. Word has length 94 [2019-09-08 04:19:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:45,348 INFO L475 AbstractCegarLoop]: Abstraction has 649 states and 1024 transitions. [2019-09-08 04:19:45,348 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:19:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1024 transitions. [2019-09-08 04:19:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-08 04:19:45,357 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:45,357 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:45,357 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:45,361 INFO L82 PathProgramCache]: Analyzing trace with hash -495368691, now seen corresponding path program 1 times [2019-09-08 04:19:45,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:45,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:45,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:45,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:45,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:45,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:45,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:19:45,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:19:45,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:19:45,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:19:45,688 INFO L87 Difference]: Start difference. First operand 649 states and 1024 transitions. Second operand 7 states. [2019-09-08 04:19:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:45,782 INFO L93 Difference]: Finished difference Result 1269 states and 2021 transitions. [2019-09-08 04:19:45,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:19:45,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-09-08 04:19:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:45,788 INFO L225 Difference]: With dead ends: 1269 [2019-09-08 04:19:45,788 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:19:45,791 INFO L628 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 [2019-09-08 04:19:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:19:45,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:19:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:19:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1011 transitions. [2019-09-08 04:19:45,813 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1011 transitions. Word has length 94 [2019-09-08 04:19:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:45,814 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 1011 transitions. [2019-09-08 04:19:45,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:19:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1011 transitions. [2019-09-08 04:19:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-08 04:19:45,815 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:45,815 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:45,816 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1956512957, now seen corresponding path program 1 times [2019-09-08 04:19:45,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:45,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:45,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:45,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:45,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:45,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:45,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:19:45,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:19:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:19:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:19:45,955 INFO L87 Difference]: Start difference. First operand 643 states and 1011 transitions. Second operand 7 states. [2019-09-08 04:19:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:46,056 INFO L93 Difference]: Finished difference Result 1257 states and 1995 transitions. [2019-09-08 04:19:46,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:19:46,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-09-08 04:19:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:46,063 INFO L225 Difference]: With dead ends: 1257 [2019-09-08 04:19:46,063 INFO L226 Difference]: Without dead ends: 637 [2019-09-08 04:19:46,067 INFO L628 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 [2019-09-08 04:19:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-09-08 04:19:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2019-09-08 04:19:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2019-09-08 04:19:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 998 transitions. [2019-09-08 04:19:46,093 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 998 transitions. Word has length 95 [2019-09-08 04:19:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:46,093 INFO L475 AbstractCegarLoop]: Abstraction has 637 states and 998 transitions. [2019-09-08 04:19:46,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:19:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 998 transitions. [2019-09-08 04:19:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 04:19:46,095 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:46,095 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:46,096 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:46,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2132810737, now seen corresponding path program 1 times [2019-09-08 04:19:46,097 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:46,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:46,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:46,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:46,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:46,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:19:46,244 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:19:46,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:19:46,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:19:46,245 INFO L87 Difference]: Start difference. First operand 637 states and 998 transitions. Second operand 7 states. [2019-09-08 04:19:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:46,331 INFO L93 Difference]: Finished difference Result 1245 states and 1969 transitions. [2019-09-08 04:19:46,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:19:46,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-09-08 04:19:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:46,336 INFO L225 Difference]: With dead ends: 1245 [2019-09-08 04:19:46,337 INFO L226 Difference]: Without dead ends: 631 [2019-09-08 04:19:46,340 INFO L628 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 [2019-09-08 04:19:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-09-08 04:19:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-09-08 04:19:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 04:19:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 985 transitions. [2019-09-08 04:19:46,360 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 985 transitions. Word has length 96 [2019-09-08 04:19:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:46,360 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 985 transitions. [2019-09-08 04:19:46,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:19:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 985 transitions. [2019-09-08 04:19:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 04:19:46,362 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:46,362 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:46,362 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash -773214734, now seen corresponding path program 1 times [2019-09-08 04:19:46,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:46,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:46,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:46,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:46,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:19:46,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:19:46,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:19:46,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:19:46,602 INFO L87 Difference]: Start difference. First operand 631 states and 985 transitions. Second operand 7 states. [2019-09-08 04:19:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:46,686 INFO L93 Difference]: Finished difference Result 1233 states and 1943 transitions. [2019-09-08 04:19:46,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:19:46,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-09-08 04:19:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:46,692 INFO L225 Difference]: With dead ends: 1233 [2019-09-08 04:19:46,692 INFO L226 Difference]: Without dead ends: 631 [2019-09-08 04:19:46,695 INFO L628 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 [2019-09-08 04:19:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-09-08 04:19:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-09-08 04:19:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 04:19:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 984 transitions. [2019-09-08 04:19:46,716 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 984 transitions. Word has length 96 [2019-09-08 04:19:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:46,717 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 984 transitions. [2019-09-08 04:19:46,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:19:46,717 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 984 transitions. [2019-09-08 04:19:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-08 04:19:46,721 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:46,721 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:46,721 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:46,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2101985241, now seen corresponding path program 1 times [2019-09-08 04:19:46,722 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:46,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:46,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:46,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:46,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:46,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:19:46,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:19:46,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:19:46,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:19:46,853 INFO L87 Difference]: Start difference. First operand 631 states and 984 transitions. Second operand 5 states. [2019-09-08 04:19:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:46,929 INFO L93 Difference]: Finished difference Result 1232 states and 1940 transitions. [2019-09-08 04:19:46,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:19:46,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-09-08 04:19:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:46,936 INFO L225 Difference]: With dead ends: 1232 [2019-09-08 04:19:46,936 INFO L226 Difference]: Without dead ends: 631 [2019-09-08 04:19:46,939 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:19:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-09-08 04:19:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-09-08 04:19:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 04:19:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 983 transitions. [2019-09-08 04:19:46,962 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 983 transitions. Word has length 97 [2019-09-08 04:19:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:46,962 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 983 transitions. [2019-09-08 04:19:46,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:19:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 983 transitions. [2019-09-08 04:19:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 04:19:46,969 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:46,969 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:46,969 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:46,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1046303197, now seen corresponding path program 1 times [2019-09-08 04:19:46,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:46,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:46,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:46,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:46,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:47,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:47,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:19:47,106 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:19:47,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:19:47,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:19:47,107 INFO L87 Difference]: Start difference. First operand 631 states and 983 transitions. Second operand 5 states. [2019-09-08 04:19:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:47,176 INFO L93 Difference]: Finished difference Result 1232 states and 1938 transitions. [2019-09-08 04:19:47,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:19:47,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-09-08 04:19:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:47,181 INFO L225 Difference]: With dead ends: 1232 [2019-09-08 04:19:47,181 INFO L226 Difference]: Without dead ends: 631 [2019-09-08 04:19:47,185 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:19:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-09-08 04:19:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-09-08 04:19:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 04:19:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 982 transitions. [2019-09-08 04:19:47,206 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 982 transitions. Word has length 98 [2019-09-08 04:19:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:47,206 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 982 transitions. [2019-09-08 04:19:47,206 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:19:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 982 transitions. [2019-09-08 04:19:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 04:19:47,208 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:47,208 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:47,208 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2126960382, now seen corresponding path program 1 times [2019-09-08 04:19:47,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:47,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:47,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:47,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:47,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:47,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:19:47,321 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:19:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:19:47,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:19:47,322 INFO L87 Difference]: Start difference. First operand 631 states and 982 transitions. Second operand 5 states. [2019-09-08 04:19:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:47,429 INFO L93 Difference]: Finished difference Result 1232 states and 1936 transitions. [2019-09-08 04:19:47,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:19:47,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-09-08 04:19:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:47,434 INFO L225 Difference]: With dead ends: 1232 [2019-09-08 04:19:47,435 INFO L226 Difference]: Without dead ends: 631 [2019-09-08 04:19:47,437 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:19:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-09-08 04:19:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-09-08 04:19:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 04:19:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 981 transitions. [2019-09-08 04:19:47,459 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 981 transitions. Word has length 99 [2019-09-08 04:19:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:47,459 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 981 transitions. [2019-09-08 04:19:47,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:19:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 981 transitions. [2019-09-08 04:19:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-08 04:19:47,461 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:47,461 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:47,462 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:47,462 INFO L82 PathProgramCache]: Analyzing trace with hash -714656930, now seen corresponding path program 1 times [2019-09-08 04:19:47,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:47,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:47,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:47,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:47,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:47,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:19:47,578 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:19:47,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:19:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:19:47,579 INFO L87 Difference]: Start difference. First operand 631 states and 981 transitions. Second operand 5 states. [2019-09-08 04:19:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:47,647 INFO L93 Difference]: Finished difference Result 1232 states and 1934 transitions. [2019-09-08 04:19:47,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:19:47,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-09-08 04:19:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:47,652 INFO L225 Difference]: With dead ends: 1232 [2019-09-08 04:19:47,652 INFO L226 Difference]: Without dead ends: 631 [2019-09-08 04:19:47,656 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:19:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-09-08 04:19:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-09-08 04:19:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 04:19:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 980 transitions. [2019-09-08 04:19:47,676 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 980 transitions. Word has length 100 [2019-09-08 04:19:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:47,677 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 980 transitions. [2019-09-08 04:19:47,677 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:19:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 980 transitions. [2019-09-08 04:19:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-08 04:19:47,678 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:47,679 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:47,679 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash 670014941, now seen corresponding path program 1 times [2019-09-08 04:19:47,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:47,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:47,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:47,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 04:19:47,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:19:47,840 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 04:19:47,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:19:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:48,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 04:19:48,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:19:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 04:19:48,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:19:48,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-09-08 04:19:48,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:19:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:19:48,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:19:48,451 INFO L87 Difference]: Start difference. First operand 631 states and 980 transitions. Second operand 12 states. [2019-09-08 04:19:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:54,256 INFO L93 Difference]: Finished difference Result 3551 states and 5749 transitions. [2019-09-08 04:19:54,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-08 04:19:54,257 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2019-09-08 04:19:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:54,279 INFO L225 Difference]: With dead ends: 3551 [2019-09-08 04:19:54,280 INFO L226 Difference]: Without dead ends: 2954 [2019-09-08 04:19:54,285 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2019-09-08 04:19:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2019-09-08 04:19:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2820. [2019-09-08 04:19:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2820 states. [2019-09-08 04:19:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4499 transitions. [2019-09-08 04:19:54,425 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4499 transitions. Word has length 101 [2019-09-08 04:19:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:54,425 INFO L475 AbstractCegarLoop]: Abstraction has 2820 states and 4499 transitions. [2019-09-08 04:19:54,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:19:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4499 transitions. [2019-09-08 04:19:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 04:19:54,427 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:54,427 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:54,428 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash 758547314, now seen corresponding path program 1 times [2019-09-08 04:19:54,428 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:54,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:54,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:54,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:54,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:54,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:54,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:19:54,561 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:19:54,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:19:54,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:19:54,562 INFO L87 Difference]: Start difference. First operand 2820 states and 4499 transitions. Second operand 7 states. [2019-09-08 04:19:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:57,656 INFO L93 Difference]: Finished difference Result 8346 states and 13740 transitions. [2019-09-08 04:19:57,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:19:57,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2019-09-08 04:19:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:57,716 INFO L225 Difference]: With dead ends: 8346 [2019-09-08 04:19:57,716 INFO L226 Difference]: Without dead ends: 5560 [2019-09-08 04:19:57,744 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:19:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2019-09-08 04:19:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5464. [2019-09-08 04:19:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5464 states. [2019-09-08 04:19:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 8819 transitions. [2019-09-08 04:19:58,281 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 8819 transitions. Word has length 105 [2019-09-08 04:19:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:58,282 INFO L475 AbstractCegarLoop]: Abstraction has 5464 states and 8819 transitions. [2019-09-08 04:19:58,282 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:19:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 8819 transitions. [2019-09-08 04:19:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 04:19:58,285 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:58,286 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:58,286 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash -666141866, now seen corresponding path program 1 times [2019-09-08 04:19:58,287 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:58,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:58,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:58,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:58,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:58,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:58,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:19:58,496 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:19:58,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:19:58,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:19:58,498 INFO L87 Difference]: Start difference. First operand 5464 states and 8819 transitions. Second operand 4 states. [2019-09-08 04:19:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:58,841 INFO L93 Difference]: Finished difference Result 10914 states and 17811 transitions. [2019-09-08 04:19:58,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:19:58,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-09-08 04:19:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:58,900 INFO L225 Difference]: With dead ends: 10914 [2019-09-08 04:19:58,900 INFO L226 Difference]: Without dead ends: 5484 [2019-09-08 04:19:58,934 INFO L628 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 [2019-09-08 04:19:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2019-09-08 04:19:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5472. [2019-09-08 04:19:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5472 states. [2019-09-08 04:19:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 8805 transitions. [2019-09-08 04:19:59,189 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 8805 transitions. Word has length 106 [2019-09-08 04:19:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:59,189 INFO L475 AbstractCegarLoop]: Abstraction has 5472 states and 8805 transitions. [2019-09-08 04:19:59,189 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:19:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 8805 transitions. [2019-09-08 04:19:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 04:19:59,191 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:59,191 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:59,191 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1642093634, now seen corresponding path program 1 times [2019-09-08 04:19:59,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:59,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:59,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:59,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:59,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:19:59,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:59,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 04:19:59,405 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 04:19:59,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 04:19:59,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:19:59,406 INFO L87 Difference]: Start difference. First operand 5472 states and 8805 transitions. Second operand 8 states. [2019-09-08 04:20:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:03,390 INFO L93 Difference]: Finished difference Result 17303 states and 28035 transitions. [2019-09-08 04:20:03,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:20:03,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-09-08 04:20:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:03,510 INFO L225 Difference]: With dead ends: 17303 [2019-09-08 04:20:03,511 INFO L226 Difference]: Without dead ends: 11847 [2019-09-08 04:20:03,544 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:20:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2019-09-08 04:20:04,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 7959. [2019-09-08 04:20:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7959 states. [2019-09-08 04:20:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 12655 transitions. [2019-09-08 04:20:04,658 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 12655 transitions. Word has length 102 [2019-09-08 04:20:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:04,659 INFO L475 AbstractCegarLoop]: Abstraction has 7959 states and 12655 transitions. [2019-09-08 04:20:04,659 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 04:20:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 12655 transitions. [2019-09-08 04:20:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-08 04:20:04,660 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:04,661 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:04,661 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:04,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1143886479, now seen corresponding path program 1 times [2019-09-08 04:20:04,662 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:04,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:04,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:04,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:04,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 04:20:04,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:04,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:20:04,823 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:20:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:20:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:20:04,824 INFO L87 Difference]: Start difference. First operand 7959 states and 12655 transitions. Second operand 7 states. [2019-09-08 04:20:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:08,285 INFO L93 Difference]: Finished difference Result 23777 states and 39072 transitions. [2019-09-08 04:20:08,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:20:08,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-09-08 04:20:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:08,385 INFO L225 Difference]: With dead ends: 23777 [2019-09-08 04:20:08,385 INFO L226 Difference]: Without dead ends: 15852 [2019-09-08 04:20:08,417 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:20:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15852 states. [2019-09-08 04:20:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15852 to 15728. [2019-09-08 04:20:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15728 states. [2019-09-08 04:20:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 25470 transitions. [2019-09-08 04:20:09,135 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 25470 transitions. Word has length 113 [2019-09-08 04:20:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:09,136 INFO L475 AbstractCegarLoop]: Abstraction has 15728 states and 25470 transitions. [2019-09-08 04:20:09,136 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:20:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 25470 transitions. [2019-09-08 04:20:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-08 04:20:09,139 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:09,139 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:09,139 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash -367218449, now seen corresponding path program 1 times [2019-09-08 04:20:09,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:09,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:09,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:09,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:09,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 04:20:09,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:09,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:20:09,255 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:20:09,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:20:09,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:20:09,255 INFO L87 Difference]: Start difference. First operand 15728 states and 25470 transitions. Second operand 4 states. [2019-09-08 04:20:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:09,806 INFO L93 Difference]: Finished difference Result 31071 states and 50905 transitions. [2019-09-08 04:20:09,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:20:09,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-09-08 04:20:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:09,916 INFO L225 Difference]: With dead ends: 31071 [2019-09-08 04:20:09,916 INFO L226 Difference]: Without dead ends: 15365 [2019-09-08 04:20:09,971 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:20:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15365 states. [2019-09-08 04:20:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15365 to 15325. [2019-09-08 04:20:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15325 states. [2019-09-08 04:20:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 24770 transitions. [2019-09-08 04:20:10,612 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 24770 transitions. Word has length 114 [2019-09-08 04:20:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:10,612 INFO L475 AbstractCegarLoop]: Abstraction has 15325 states and 24770 transitions. [2019-09-08 04:20:10,613 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:20:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 24770 transitions. [2019-09-08 04:20:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 04:20:10,614 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:10,614 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:10,615 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:10,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1428052665, now seen corresponding path program 1 times [2019-09-08 04:20:10,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:10,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:10,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:10,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:10,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 04:20:10,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:10,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:20:10,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:20:10,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:20:10,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:20:10,789 INFO L87 Difference]: Start difference. First operand 15325 states and 24770 transitions. Second operand 7 states. [2019-09-08 04:20:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:14,241 INFO L93 Difference]: Finished difference Result 45999 states and 77531 transitions. [2019-09-08 04:20:14,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:20:14,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-09-08 04:20:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:14,468 INFO L225 Difference]: With dead ends: 45999 [2019-09-08 04:20:14,468 INFO L226 Difference]: Without dead ends: 30708 [2019-09-08 04:20:14,554 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:20:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30708 states. [2019-09-08 04:20:16,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30708 to 30524. [2019-09-08 04:20:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30524 states. [2019-09-08 04:20:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30524 states to 30524 states and 50920 transitions. [2019-09-08 04:20:16,799 INFO L78 Accepts]: Start accepts. Automaton has 30524 states and 50920 transitions. Word has length 123 [2019-09-08 04:20:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:16,800 INFO L475 AbstractCegarLoop]: Abstraction has 30524 states and 50920 transitions. [2019-09-08 04:20:16,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:20:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 30524 states and 50920 transitions. [2019-09-08 04:20:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-08 04:20:16,802 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:16,802 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:16,802 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:16,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1466168961, now seen corresponding path program 1 times [2019-09-08 04:20:16,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:16,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:16,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:16,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:16,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 04:20:16,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:16,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:20:16,910 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:20:16,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:20:16,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:20:16,910 INFO L87 Difference]: Start difference. First operand 30524 states and 50920 transitions. Second operand 4 states. [2019-09-08 04:20:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:17,890 INFO L93 Difference]: Finished difference Result 60711 states and 102842 transitions. [2019-09-08 04:20:17,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:20:17,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-09-08 04:20:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:18,080 INFO L225 Difference]: With dead ends: 60711 [2019-09-08 04:20:18,080 INFO L226 Difference]: Without dead ends: 30209 [2019-09-08 04:20:18,221 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:20:18,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30209 states. [2019-09-08 04:20:20,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30209 to 30133. [2019-09-08 04:20:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30133 states. [2019-09-08 04:20:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30133 states to 30133 states and 50187 transitions. [2019-09-08 04:20:21,110 INFO L78 Accepts]: Start accepts. Automaton has 30133 states and 50187 transitions. Word has length 124 [2019-09-08 04:20:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:21,111 INFO L475 AbstractCegarLoop]: Abstraction has 30133 states and 50187 transitions. [2019-09-08 04:20:21,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:20:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 30133 states and 50187 transitions. [2019-09-08 04:20:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-08 04:20:21,113 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:21,113 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:21,113 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:21,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1490383573, now seen corresponding path program 1 times [2019-09-08 04:20:21,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:21,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:21,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:21,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:21,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-09-08 04:20:21,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:21,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:20:21,290 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:20:21,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:20:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:20:21,291 INFO L87 Difference]: Start difference. First operand 30133 states and 50187 transitions. Second operand 7 states. [2019-09-08 04:20:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:25,225 INFO L93 Difference]: Finished difference Result 90603 states and 160308 transitions. [2019-09-08 04:20:25,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:20:25,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-09-08 04:20:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:25,523 INFO L225 Difference]: With dead ends: 90603 [2019-09-08 04:20:25,523 INFO L226 Difference]: Without dead ends: 60504 [2019-09-08 04:20:25,638 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:20:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60504 states. [2019-09-08 04:20:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60504 to 60220. [2019-09-08 04:20:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60220 states. [2019-09-08 04:20:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60220 states to 60220 states and 106104 transitions. [2019-09-08 04:20:28,141 INFO L78 Accepts]: Start accepts. Automaton has 60220 states and 106104 transitions. Word has length 134 [2019-09-08 04:20:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:28,141 INFO L475 AbstractCegarLoop]: Abstraction has 60220 states and 106104 transitions. [2019-09-08 04:20:28,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:20:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 60220 states and 106104 transitions. [2019-09-08 04:20:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-08 04:20:28,142 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:28,143 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:28,143 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:28,143 INFO L82 PathProgramCache]: Analyzing trace with hash 132792825, now seen corresponding path program 1 times [2019-09-08 04:20:28,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:28,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:28,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:28,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:28,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 04:20:28,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:28,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:20:28,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:20:28,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:20:28,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:20:28,249 INFO L87 Difference]: Start difference. First operand 60220 states and 106104 transitions. Second operand 4 states. [2019-09-08 04:20:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:30,248 INFO L93 Difference]: Finished difference Result 119860 states and 216020 transitions. [2019-09-08 04:20:30,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:20:30,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-09-08 04:20:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:30,550 INFO L225 Difference]: With dead ends: 119860 [2019-09-08 04:20:30,550 INFO L226 Difference]: Without dead ends: 59656 [2019-09-08 04:20:30,759 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:20:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59656 states. [2019-09-08 04:20:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59656 to 59512. [2019-09-08 04:20:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59512 states. [2019-09-08 04:20:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59512 states to 59512 states and 104611 transitions. [2019-09-08 04:20:35,239 INFO L78 Accepts]: Start accepts. Automaton has 59512 states and 104611 transitions. Word has length 135 [2019-09-08 04:20:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:35,240 INFO L475 AbstractCegarLoop]: Abstraction has 59512 states and 104611 transitions. [2019-09-08 04:20:35,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:20:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 59512 states and 104611 transitions. [2019-09-08 04:20:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-08 04:20:35,241 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:35,241 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:35,241 INFO L418 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:35,242 INFO L82 PathProgramCache]: Analyzing trace with hash 537484694, now seen corresponding path program 1 times [2019-09-08 04:20:35,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:35,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:35,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:35,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:35,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-08 04:20:35,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:20:35,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:20:35,754 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:20:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:20:35,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:20:35,755 INFO L87 Difference]: Start difference. First operand 59512 states and 104611 transitions. Second operand 7 states. [2019-09-08 04:20:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:41,520 INFO L93 Difference]: Finished difference Result 136007 states and 263378 transitions. [2019-09-08 04:20:41,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:20:41,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-09-08 04:20:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:41,976 INFO L225 Difference]: With dead ends: 136007 [2019-09-08 04:20:41,976 INFO L226 Difference]: Without dead ends: 76529 [2019-09-08 04:20:42,259 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-08 04:20:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76529 states. [2019-09-08 04:20:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76529 to 67667. [2019-09-08 04:20:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67667 states. [2019-09-08 04:20:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67667 states to 67667 states and 119012 transitions. [2019-09-08 04:20:45,010 INFO L78 Accepts]: Start accepts. Automaton has 67667 states and 119012 transitions. Word has length 136 [2019-09-08 04:20:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:45,011 INFO L475 AbstractCegarLoop]: Abstraction has 67667 states and 119012 transitions. [2019-09-08 04:20:45,011 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:20:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 67667 states and 119012 transitions. [2019-09-08 04:20:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-09-08 04:20:45,023 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:45,024 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:20:45,024 INFO L418 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:45,025 INFO L82 PathProgramCache]: Analyzing trace with hash -526315685, now seen corresponding path program 1 times [2019-09-08 04:20:45,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:45,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:45,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:45,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:45,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2019-09-08 04:20:45,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:20:45,300 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:20:45,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:45,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 4123 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 04:20:45,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:20:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-08 04:20:46,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:20:46,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-09-08 04:20:46,142 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 04:20:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 04:20:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-09-08 04:20:46,142 INFO L87 Difference]: Start difference. First operand 67667 states and 119012 transitions. Second operand 17 states. [2019-09-08 04:21:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:21:25,983 INFO L93 Difference]: Finished difference Result 266824 states and 599873 transitions. [2019-09-08 04:21:25,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2019-09-08 04:21:25,984 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 311 [2019-09-08 04:21:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:21:32,550 INFO L225 Difference]: With dead ends: 266824 [2019-09-08 04:21:32,550 INFO L226 Difference]: Without dead ends: 199004 [2019-09-08 04:21:33,027 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1227, Invalid=8085, Unknown=0, NotChecked=0, Total=9312 [2019-09-08 04:21:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199004 states. [2019-09-08 04:21:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199004 to 170897. [2019-09-08 04:21:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170897 states. [2019-09-08 04:21:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170897 states to 170897 states and 312891 transitions. [2019-09-08 04:21:42,713 INFO L78 Accepts]: Start accepts. Automaton has 170897 states and 312891 transitions. Word has length 311 [2019-09-08 04:21:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:21:42,714 INFO L475 AbstractCegarLoop]: Abstraction has 170897 states and 312891 transitions. [2019-09-08 04:21:42,714 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 04:21:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 170897 states and 312891 transitions. [2019-09-08 04:21:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2019-09-08 04:21:42,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:21:42,775 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:21:42,775 INFO L418 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:21:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:21:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash 653474479, now seen corresponding path program 1 times [2019-09-08 04:21:42,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:21:42,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:21:42,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:21:42,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:21:42,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:21:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:21:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-09-08 04:21:43,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:21:43,119 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 04:21:43,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:21:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:21:48,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 4352 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-08 04:21:48,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:21:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-09-08 04:21:48,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:21:48,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2019-09-08 04:21:48,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 04:21:48,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 04:21:48,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2019-09-08 04:21:48,903 INFO L87 Difference]: Start difference. First operand 170897 states and 312891 transitions. Second operand 26 states. [2019-09-08 04:23:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:23:47,741 INFO L93 Difference]: Finished difference Result 897292 states and 2265926 transitions. [2019-09-08 04:23:47,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-09-08 04:23:47,742 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 303 [2019-09-08 04:23:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:24:10,656 INFO L225 Difference]: With dead ends: 897292 [2019-09-08 04:24:10,656 INFO L226 Difference]: Without dead ends: 725447 [2019-09-08 04:24:22,329 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4722 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1282, Invalid=13724, Unknown=0, NotChecked=0, Total=15006 [2019-09-08 04:24:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725447 states.