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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 04:17:35,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 04:17:35,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 04:17:35,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 04:17:35,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 04:17:35,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 04:17:35,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 04:17:35,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 04:17:35,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 04:17:35,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 04:17:35,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 04:17:35,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 04:17:35,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 04:17:35,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 04:17:35,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 04:17:35,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 04:17:35,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 04:17:35,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 04:17:35,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 04:17:35,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 04:17:35,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 04:17:35,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 04:17:35,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 04:17:35,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 04:17:35,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 04:17:35,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 04:17:35,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 04:17:35,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 04:17:35,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 04:17:35,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 04:17:35,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 04:17:35,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 04:17:35,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 04:17:35,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 04:17:35,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 04:17:35,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 04:17:35,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 04:17:35,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 04:17:35,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 04:17:35,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 04:17:35,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 04:17:35,584 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 04:17:35,599 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 04:17:35,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 04:17:35,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 04:17:35,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 04:17:35,601 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 04:17:35,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 04:17:35,602 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 04:17:35,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 04:17:35,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 04:17:35,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 04:17:35,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 04:17:35,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 04:17:35,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 04:17:35,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 04:17:35,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 04:17:35,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 04:17:35,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 04:17:35,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 04:17:35,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 04:17:35,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 04:17:35,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 04:17:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 04:17:35,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 04:17:35,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 04:17:35,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 04:17:35,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 04:17:35,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 04:17:35,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 04:17:35,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 04:17:35,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 04:17:35,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 04:17:35,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 04:17:35,660 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 04:17:35,660 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 04:17:35,661 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2019-09-08 04:17:35,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525a2a78a/f2b47805c9f24b09ac4bd93496a2ab96/FLAG2567b8e88 [2019-09-08 04:17:36,417 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 04:17:36,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2019-09-08 04:17:36,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525a2a78a/f2b47805c9f24b09ac4bd93496a2ab96/FLAG2567b8e88 [2019-09-08 04:17:36,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525a2a78a/f2b47805c9f24b09ac4bd93496a2ab96 [2019-09-08 04:17:36,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 04:17:36,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 04:17:36,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 04:17:36,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 04:17:36,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 04:17:36,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:17:36" (1/1) ... [2019-09-08 04:17:36,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@940a98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:36, skipping insertion in model container [2019-09-08 04:17:36,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:17:36" (1/1) ... [2019-09-08 04:17:36,596 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 04:17:36,674 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 04:17:37,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:17:37,428 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 04:17:37,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:17:37,626 INFO L192 MainTranslator]: Completed translation [2019-09-08 04:17:37,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37 WrapperNode [2019-09-08 04:17:37,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 04:17:37,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 04:17:37,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 04:17:37,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 04:17:37,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (1/1) ... [2019-09-08 04:17:37,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 04:17:37,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 04:17:37,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 04:17:37,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 04:17:37,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (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 04:17:37,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 04:17:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 04:17:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-08 04:17:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-08 04:17:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-08 04:17:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-08 04:17:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-08 04:17:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-08 04:17:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-08 04:17:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-09-08 04:17:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-09-08 04:17:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-09-08 04:17:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-09-08 04:17:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-09-08 04:17:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-09-08 04:17:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-09-08 04:17:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-09-08 04:17:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-08 04:17:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-08 04:17:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-08 04:17:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-08 04:17:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-08 04:17:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-09-08 04:17:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-09-08 04:17:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-09-08 04:17:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-09-08 04:17:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-09-08 04:17:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-09-08 04:17:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-09-08 04:17:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-09-08 04:17:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-08 04:17:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-09-08 04:17:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-09-08 04:17:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-09-08 04:17:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-08 04:17:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-09-08 04:17:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-08 04:17:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-08 04:17:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 04:17:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-09-08 04:17:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-09-08 04:17:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-08 04:17:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-09-08 04:17:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-09-08 04:17:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-09-08 04:17:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-09-08 04:17:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-09-08 04:17:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-09-08 04:17:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-09-08 04:17:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-09-08 04:17:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-09-08 04:17:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-09-08 04:17:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-08 04:17:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-09-08 04:17:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-09-08 04:17:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:17:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:17:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-09-08 04:17:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-09-08 04:17:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-09-08 04:17:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 04:17:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 04:17:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-08 04:17:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 04:17:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 04:17:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-08 04:17:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 04:17:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 04:17:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 04:17:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 04:17:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-08 04:17:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 04:17:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-08 04:17:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-08 04:17:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 04:17:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-08 04:17:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-08 04:17:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 04:17:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-08 04:17:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-09-08 04:17:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-09-08 04:17:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-09-08 04:17:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-09-08 04:17:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-09-08 04:17:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-09-08 04:17:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-09-08 04:17:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-09-08 04:17:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-08 04:17:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-08 04:17:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-08 04:17:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-08 04:17:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-08 04:17:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 04:17:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-09-08 04:17:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-09-08 04:17:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-09-08 04:17:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-09-08 04:17:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-09-08 04:17:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-09-08 04:17:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-09-08 04:17:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-09-08 04:17:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-08 04:17:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-09-08 04:17:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-09-08 04:17:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-09-08 04:17:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-08 04:17:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-09-08 04:17:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-09-08 04:17:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-09-08 04:17:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-09-08 04:17:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-09-08 04:17:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-08 04:17:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-09-08 04:17:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-08 04:17:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-08 04:17:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-08 04:17:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 04:17:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-09-08 04:17:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-09-08 04:17:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-09-08 04:17:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-08 04:17:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-09-08 04:17:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-09-08 04:17:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-09-08 04:17:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-09-08 04:17:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-09-08 04:17:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-09-08 04:17:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-09-08 04:17:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-09-08 04:17:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-09-08 04:17:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-09-08 04:17:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-09-08 04:17:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-09-08 04:17:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-09-08 04:17:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-09-08 04:17:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-09-08 04:17:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-09-08 04:17:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-09-08 04:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-09-08 04:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-09-08 04:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-09-08 04:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-09-08 04:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-09-08 04:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 04:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-08 04:17:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 04:17:40,708 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 04:17:40,708 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-08 04:17:40,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:17:40 BoogieIcfgContainer [2019-09-08 04:17:40,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 04:17:40,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 04:17:40,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 04:17:40,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 04:17:40,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 04:17:36" (1/3) ... [2019-09-08 04:17:40,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e81bb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:17:40, skipping insertion in model container [2019-09-08 04:17:40,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:17:37" (2/3) ... [2019-09-08 04:17:40,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e81bb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:17:40, skipping insertion in model container [2019-09-08 04:17:40,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:17:40" (3/3) ... [2019-09-08 04:17:40,719 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2019-09-08 04:17:40,730 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 04:17:40,741 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 04:17:40,758 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 04:17:40,812 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 04:17:40,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 04:17:40,813 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 04:17:40,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 04:17:40,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 04:17:40,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 04:17:40,814 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 04:17:40,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 04:17:40,814 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 04:17:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2019-09-08 04:17:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-08 04:17:40,888 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:40,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:40,892 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:40,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:40,898 INFO L82 PathProgramCache]: Analyzing trace with hash 9789385, now seen corresponding path program 1 times [2019-09-08 04:17:40,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:40,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:40,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:40,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:41,619 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 04:17:41,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:41,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:41,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:41,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:41,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:41,645 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 7 states. [2019-09-08 04:17:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:42,077 INFO L93 Difference]: Finished difference Result 1235 states and 2008 transitions. [2019-09-08 04:17:42,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:17:42,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-09-08 04:17:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:42,121 INFO L225 Difference]: With dead ends: 1235 [2019-09-08 04:17:42,122 INFO L226 Difference]: Without dead ends: 626 [2019-09-08 04:17:42,135 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 04:17:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-09-08 04:17:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 624. [2019-09-08 04:17:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-09-08 04:17:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 999 transitions. [2019-09-08 04:17:42,285 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 999 transitions. Word has length 115 [2019-09-08 04:17:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:42,286 INFO L475 AbstractCegarLoop]: Abstraction has 624 states and 999 transitions. [2019-09-08 04:17:42,286 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 999 transitions. [2019-09-08 04:17:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 04:17:42,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:42,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:42,297 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash -803565182, now seen corresponding path program 1 times [2019-09-08 04:17:42,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:42,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:42,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:42,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:42,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:42,541 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 04:17:42,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:42,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:17:42,544 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:17:42,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:17:42,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:17:42,545 INFO L87 Difference]: Start difference. First operand 624 states and 999 transitions. Second operand 4 states. [2019-09-08 04:17:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:42,657 INFO L93 Difference]: Finished difference Result 1214 states and 1963 transitions. [2019-09-08 04:17:42,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 04:17:42,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-09-08 04:17:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:42,665 INFO L225 Difference]: With dead ends: 1214 [2019-09-08 04:17:42,665 INFO L226 Difference]: Without dead ends: 606 [2019-09-08 04:17:42,671 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 04:17:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2019-09-08 04:17:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2019-09-08 04:17:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2019-09-08 04:17:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 966 transitions. [2019-09-08 04:17:42,733 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 966 transitions. Word has length 116 [2019-09-08 04:17:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:42,736 INFO L475 AbstractCegarLoop]: Abstraction has 606 states and 966 transitions. [2019-09-08 04:17:42,736 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:17:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 966 transitions. [2019-09-08 04:17:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 04:17:42,746 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:42,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:42,747 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:42,748 INFO L82 PathProgramCache]: Analyzing trace with hash -433705100, now seen corresponding path program 1 times [2019-09-08 04:17:42,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:42,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:42,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:42,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:42,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:43,083 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 04:17:43,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:43,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:43,089 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:43,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:43,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:43,090 INFO L87 Difference]: Start difference. First operand 606 states and 966 transitions. Second operand 7 states. [2019-09-08 04:17:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:43,205 INFO L93 Difference]: Finished difference Result 1183 states and 1905 transitions. [2019-09-08 04:17:43,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:17:43,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-09-08 04:17:43,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:43,212 INFO L225 Difference]: With dead ends: 1183 [2019-09-08 04:17:43,212 INFO L226 Difference]: Without dead ends: 600 [2019-09-08 04:17:43,215 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 04:17:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-09-08 04:17:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2019-09-08 04:17:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2019-09-08 04:17:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 953 transitions. [2019-09-08 04:17:43,299 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 953 transitions. Word has length 116 [2019-09-08 04:17:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:43,300 INFO L475 AbstractCegarLoop]: Abstraction has 600 states and 953 transitions. [2019-09-08 04:17:43,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 953 transitions. [2019-09-08 04:17:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 04:17:43,306 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:43,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:43,307 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:43,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1336159923, now seen corresponding path program 1 times [2019-09-08 04:17:43,307 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:43,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:43,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:43,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:43,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:43,512 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 04:17:43,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:43,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:43,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:43,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:43,516 INFO L87 Difference]: Start difference. First operand 600 states and 953 transitions. Second operand 7 states. [2019-09-08 04:17:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:43,621 INFO L93 Difference]: Finished difference Result 1171 states and 1879 transitions. [2019-09-08 04:17:43,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:17:43,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-09-08 04:17:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:43,631 INFO L225 Difference]: With dead ends: 1171 [2019-09-08 04:17:43,632 INFO L226 Difference]: Without dead ends: 594 [2019-09-08 04:17:43,638 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 04:17:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2019-09-08 04:17:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2019-09-08 04:17:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-09-08 04:17:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 940 transitions. [2019-09-08 04:17:43,668 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 940 transitions. Word has length 117 [2019-09-08 04:17:43,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:43,669 INFO L475 AbstractCegarLoop]: Abstraction has 594 states and 940 transitions. [2019-09-08 04:17:43,669 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:43,669 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 940 transitions. [2019-09-08 04:17:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 04:17:43,673 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:43,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:43,673 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:43,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:43,674 INFO L82 PathProgramCache]: Analyzing trace with hash 713483960, now seen corresponding path program 1 times [2019-09-08 04:17:43,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:43,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:43,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:43,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:43,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:43,857 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 04:17:43,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:43,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:43,858 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:43,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:43,860 INFO L87 Difference]: Start difference. First operand 594 states and 940 transitions. Second operand 7 states. [2019-09-08 04:17:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:43,971 INFO L93 Difference]: Finished difference Result 1159 states and 1853 transitions. [2019-09-08 04:17:43,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:17:43,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-09-08 04:17:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:43,988 INFO L225 Difference]: With dead ends: 1159 [2019-09-08 04:17:43,988 INFO L226 Difference]: Without dead ends: 588 [2019-09-08 04:17:43,994 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 04:17:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-09-08 04:17:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-09-08 04:17:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-09-08 04:17:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 927 transitions. [2019-09-08 04:17:44,020 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 927 transitions. Word has length 118 [2019-09-08 04:17:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:44,020 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 927 transitions. [2019-09-08 04:17:44,020 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 927 transitions. [2019-09-08 04:17:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 04:17:44,026 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:44,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:44,027 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash -467103239, now seen corresponding path program 1 times [2019-09-08 04:17:44,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:44,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:44,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:44,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:44,193 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 04:17:44,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:44,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:44,194 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:44,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:44,195 INFO L87 Difference]: Start difference. First operand 588 states and 927 transitions. Second operand 7 states. [2019-09-08 04:17:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:44,294 INFO L93 Difference]: Finished difference Result 1147 states and 1827 transitions. [2019-09-08 04:17:44,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:17:44,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-09-08 04:17:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:44,315 INFO L225 Difference]: With dead ends: 1147 [2019-09-08 04:17:44,315 INFO L226 Difference]: Without dead ends: 588 [2019-09-08 04:17:44,319 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 04:17:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-09-08 04:17:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-09-08 04:17:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-09-08 04:17:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 926 transitions. [2019-09-08 04:17:44,350 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 926 transitions. Word has length 118 [2019-09-08 04:17:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:44,352 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 926 transitions. [2019-09-08 04:17:44,353 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 926 transitions. [2019-09-08 04:17:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-08 04:17:44,357 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:44,357 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, 1, 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 04:17:44,357 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash -211092783, now seen corresponding path program 1 times [2019-09-08 04:17:44,358 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:44,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:44,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:44,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:44,555 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 04:17:44,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:44,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:17:44,556 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:17:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:17:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:17:44,557 INFO L87 Difference]: Start difference. First operand 588 states and 926 transitions. Second operand 5 states. [2019-09-08 04:17:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:44,635 INFO L93 Difference]: Finished difference Result 1146 states and 1824 transitions. [2019-09-08 04:17:44,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:44,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-09-08 04:17:44,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:44,640 INFO L225 Difference]: With dead ends: 1146 [2019-09-08 04:17:44,640 INFO L226 Difference]: Without dead ends: 588 [2019-09-08 04:17:44,643 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 04:17:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-09-08 04:17:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-09-08 04:17:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-09-08 04:17:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 925 transitions. [2019-09-08 04:17:44,667 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 925 transitions. Word has length 119 [2019-09-08 04:17:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:44,667 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 925 transitions. [2019-09-08 04:17:44,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:17:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 925 transitions. [2019-09-08 04:17:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-08 04:17:44,670 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:44,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:44,671 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:44,671 INFO L82 PathProgramCache]: Analyzing trace with hash 644803690, now seen corresponding path program 1 times [2019-09-08 04:17:44,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:44,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:44,794 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 04:17:44,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:44,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:17:44,796 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:17:44,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:17:44,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:17:44,796 INFO L87 Difference]: Start difference. First operand 588 states and 925 transitions. Second operand 5 states. [2019-09-08 04:17:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:44,866 INFO L93 Difference]: Finished difference Result 1146 states and 1822 transitions. [2019-09-08 04:17:44,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:44,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-09-08 04:17:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:44,871 INFO L225 Difference]: With dead ends: 1146 [2019-09-08 04:17:44,872 INFO L226 Difference]: Without dead ends: 588 [2019-09-08 04:17:44,875 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 04:17:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-09-08 04:17:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-09-08 04:17:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-09-08 04:17:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 924 transitions. [2019-09-08 04:17:44,896 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 924 transitions. Word has length 120 [2019-09-08 04:17:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:44,897 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 924 transitions. [2019-09-08 04:17:44,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:17:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 924 transitions. [2019-09-08 04:17:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-08 04:17:44,900 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:44,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:44,900 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1883967756, now seen corresponding path program 1 times [2019-09-08 04:17:44,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:44,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:44,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:44,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:45,011 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 04:17:45,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:45,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:17:45,012 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:17:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:17:45,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:17:45,013 INFO L87 Difference]: Start difference. First operand 588 states and 924 transitions. Second operand 5 states. [2019-09-08 04:17:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:45,077 INFO L93 Difference]: Finished difference Result 1146 states and 1820 transitions. [2019-09-08 04:17:45,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:45,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-09-08 04:17:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:45,082 INFO L225 Difference]: With dead ends: 1146 [2019-09-08 04:17:45,082 INFO L226 Difference]: Without dead ends: 588 [2019-09-08 04:17:45,085 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 04:17:45,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-09-08 04:17:45,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-09-08 04:17:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-09-08 04:17:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 923 transitions. [2019-09-08 04:17:45,107 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 923 transitions. Word has length 121 [2019-09-08 04:17:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:45,107 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 923 transitions. [2019-09-08 04:17:45,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:17:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 923 transitions. [2019-09-08 04:17:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-08 04:17:45,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:45,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:45,111 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2119525317, now seen corresponding path program 1 times [2019-09-08 04:17:45,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:45,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:45,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:45,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:45,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:45,274 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 04:17:45,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:45,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:17:45,276 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:17:45,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:17:45,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:17:45,277 INFO L87 Difference]: Start difference. First operand 588 states and 923 transitions. Second operand 5 states. [2019-09-08 04:17:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:45,353 INFO L93 Difference]: Finished difference Result 1146 states and 1818 transitions. [2019-09-08 04:17:45,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:45,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-09-08 04:17:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:45,360 INFO L225 Difference]: With dead ends: 1146 [2019-09-08 04:17:45,360 INFO L226 Difference]: Without dead ends: 588 [2019-09-08 04:17:45,364 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 04:17:45,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-09-08 04:17:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-09-08 04:17:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-09-08 04:17:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 922 transitions. [2019-09-08 04:17:45,400 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 922 transitions. Word has length 122 [2019-09-08 04:17:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:45,402 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 922 transitions. [2019-09-08 04:17:45,402 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:17:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 922 transitions. [2019-09-08 04:17:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 04:17:45,407 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:45,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:45,408 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1308052295, now seen corresponding path program 1 times [2019-09-08 04:17:45,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:45,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:45,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:45,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:45,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:45,625 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 04:17:45,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:45,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 04:17:45,626 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 04:17:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 04:17:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:17:45,626 INFO L87 Difference]: Start difference. First operand 588 states and 922 transitions. Second operand 8 states. [2019-09-08 04:17:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:48,311 INFO L93 Difference]: Finished difference Result 2139 states and 3411 transitions. [2019-09-08 04:17:48,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:17:48,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2019-09-08 04:17:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:48,329 INFO L225 Difference]: With dead ends: 2139 [2019-09-08 04:17:48,330 INFO L226 Difference]: Without dead ends: 1585 [2019-09-08 04:17:48,337 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 04:17:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2019-09-08 04:17:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1573. [2019-09-08 04:17:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2019-09-08 04:17:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2469 transitions. [2019-09-08 04:17:48,439 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2469 transitions. Word has length 123 [2019-09-08 04:17:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:48,442 INFO L475 AbstractCegarLoop]: Abstraction has 1573 states and 2469 transitions. [2019-09-08 04:17:48,442 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 04:17:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2469 transitions. [2019-09-08 04:17:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-08 04:17:48,446 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:48,446 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, 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 04:17:48,446 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1202656165, now seen corresponding path program 1 times [2019-09-08 04:17:48,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:48,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:48,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:48,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:48,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:48,657 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 04:17:48,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:17:48,658 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 04:17:48,685 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 04:17:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:49,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 04:17:49,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:17:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream Closed [2019-09-08 04:17:49,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:17:49,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-09-08 04:17:49,266 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:17:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:17:49,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:17:49,266 INFO L87 Difference]: Start difference. First operand 1573 states and 2469 transitions. Second operand 12 states. [2019-09-08 04:17:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:55,803 INFO L93 Difference]: Finished difference Result 7687 states and 12611 transitions. [2019-09-08 04:17:55,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-08 04:17:55,804 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2019-09-08 04:17:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:55,864 INFO L225 Difference]: With dead ends: 7687 [2019-09-08 04:17:55,864 INFO L226 Difference]: Without dead ends: 6148 [2019-09-08 04:17:55,889 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2019-09-08 04:17:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2019-09-08 04:17:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 3962. [2019-09-08 04:17:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3962 states. [2019-09-08 04:17:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 6300 transitions. [2019-09-08 04:17:56,215 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 6300 transitions. Word has length 128 [2019-09-08 04:17:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:56,215 INFO L475 AbstractCegarLoop]: Abstraction has 3962 states and 6300 transitions. [2019-09-08 04:17:56,215 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:17:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 6300 transitions. [2019-09-08 04:17:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-09-08 04:17:56,219 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:56,219 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, 1, 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 04:17:56,219 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:56,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1118227935, now seen corresponding path program 1 times [2019-09-08 04:17:56,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:56,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:56,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:56,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:56,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:56,368 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 04:17:56,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:56,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:56,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:56,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:56,370 INFO L87 Difference]: Start difference. First operand 3962 states and 6300 transitions. Second operand 7 states. [2019-09-08 04:17:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:59,238 INFO L93 Difference]: Finished difference Result 11728 states and 19070 transitions. [2019-09-08 04:17:59,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:17:59,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-09-08 04:17:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:59,312 INFO L225 Difference]: With dead ends: 11728 [2019-09-08 04:17:59,312 INFO L226 Difference]: Without dead ends: 7800 [2019-09-08 04:17:59,345 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 04:17:59,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7800 states. [2019-09-08 04:17:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7800 to 7712. [2019-09-08 04:17:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7712 states. [2019-09-08 04:17:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 12402 transitions. [2019-09-08 04:17:59,876 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 12402 transitions. Word has length 131 [2019-09-08 04:17:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:59,876 INFO L475 AbstractCegarLoop]: Abstraction has 7712 states and 12402 transitions. [2019-09-08 04:17:59,876 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 12402 transitions. [2019-09-08 04:17:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-08 04:17:59,879 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:59,880 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, 1, 1, 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 04:17:59,880 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:59,881 INFO L82 PathProgramCache]: Analyzing trace with hash -580532883, now seen corresponding path program 1 times [2019-09-08 04:17:59,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:59,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:59,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:59,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:59,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:00,016 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 04:18:00,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:00,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:18:00,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:18:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:18:00,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:18:00,019 INFO L87 Difference]: Start difference. First operand 7712 states and 12402 transitions. Second operand 4 states. [2019-09-08 04:18:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:00,337 INFO L93 Difference]: Finished difference Result 15065 states and 24490 transitions. [2019-09-08 04:18:00,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:18:00,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-09-08 04:18:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:00,412 INFO L225 Difference]: With dead ends: 15065 [2019-09-08 04:18:00,412 INFO L226 Difference]: Without dead ends: 7375 [2019-09-08 04:18:00,452 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 04:18:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2019-09-08 04:18:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 7353. [2019-09-08 04:18:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7353 states. [2019-09-08 04:18:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 11794 transitions. [2019-09-08 04:18:00,826 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 11794 transitions. Word has length 132 [2019-09-08 04:18:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:00,827 INFO L475 AbstractCegarLoop]: Abstraction has 7353 states and 11794 transitions. [2019-09-08 04:18:00,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:18:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 11794 transitions. [2019-09-08 04:18:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-08 04:18:00,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:00,834 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, 1, 1, 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 04:18:00,834 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash 568064234, now seen corresponding path program 1 times [2019-09-08 04:18:00,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:00,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:00,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:00,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:00,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:01,029 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 04:18:01,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:01,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:18:01,032 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:18:01,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:18:01,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:18:01,032 INFO L87 Difference]: Start difference. First operand 7353 states and 11794 transitions. Second operand 7 states. [2019-09-08 04:18:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:04,609 INFO L93 Difference]: Finished difference Result 21983 states and 36155 transitions. [2019-09-08 04:18:04,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:18:04,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2019-09-08 04:18:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:04,721 INFO L225 Difference]: With dead ends: 21983 [2019-09-08 04:18:04,722 INFO L226 Difference]: Without dead ends: 14664 [2019-09-08 04:18:04,763 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 04:18:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14664 states. [2019-09-08 04:18:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14664 to 14540. [2019-09-08 04:18:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14540 states. [2019-09-08 04:18:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14540 states to 14540 states and 23692 transitions. [2019-09-08 04:18:05,501 INFO L78 Accepts]: Start accepts. Automaton has 14540 states and 23692 transitions. Word has length 140 [2019-09-08 04:18:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:05,502 INFO L475 AbstractCegarLoop]: Abstraction has 14540 states and 23692 transitions. [2019-09-08 04:18:05,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:18:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 14540 states and 23692 transitions. [2019-09-08 04:18:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-08 04:18:05,508 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:05,508 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, 1, 1, 1, 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 04:18:05,509 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:05,509 INFO L82 PathProgramCache]: Analyzing trace with hash 245962364, now seen corresponding path program 1 times [2019-09-08 04:18:05,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:05,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:05,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:05,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:05,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:05,653 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 04:18:05,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:05,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:18:05,657 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:18:05,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:18:05,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:18:05,657 INFO L87 Difference]: Start difference. First operand 14540 states and 23692 transitions. Second operand 4 states. [2019-09-08 04:18:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:06,171 INFO L93 Difference]: Finished difference Result 28771 states and 47448 transitions. [2019-09-08 04:18:06,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:18:06,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-09-08 04:18:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:06,270 INFO L225 Difference]: With dead ends: 28771 [2019-09-08 04:18:06,271 INFO L226 Difference]: Without dead ends: 14253 [2019-09-08 04:18:06,337 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 04:18:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2019-09-08 04:18:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 14213. [2019-09-08 04:18:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14213 states. [2019-09-08 04:18:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14213 states to 14213 states and 23111 transitions. [2019-09-08 04:18:07,934 INFO L78 Accepts]: Start accepts. Automaton has 14213 states and 23111 transitions. Word has length 141 [2019-09-08 04:18:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:07,934 INFO L475 AbstractCegarLoop]: Abstraction has 14213 states and 23111 transitions. [2019-09-08 04:18:07,934 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:18:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 14213 states and 23111 transitions. [2019-09-08 04:18:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-09-08 04:18:07,938 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:07,938 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, 1, 1, 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 04:18:07,939 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 418409551, now seen corresponding path program 1 times [2019-09-08 04:18:07,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:07,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:07,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:07,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:07,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:08,100 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 04:18:08,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:08,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:18:08,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:18:08,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:18:08,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:18:08,102 INFO L87 Difference]: Start difference. First operand 14213 states and 23111 transitions. Second operand 7 states. [2019-09-08 04:18:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:11,204 INFO L93 Difference]: Finished difference Result 42679 states and 71684 transitions. [2019-09-08 04:18:11,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:18:11,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2019-09-08 04:18:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:11,352 INFO L225 Difference]: With dead ends: 42679 [2019-09-08 04:18:11,352 INFO L226 Difference]: Without dead ends: 28500 [2019-09-08 04:18:11,426 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 04:18:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28500 states. [2019-09-08 04:18:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28500 to 28316. [2019-09-08 04:18:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28316 states. [2019-09-08 04:18:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28316 states to 28316 states and 47222 transitions. [2019-09-08 04:18:12,731 INFO L78 Accepts]: Start accepts. Automaton has 28316 states and 47222 transitions. Word has length 150 [2019-09-08 04:18:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:12,731 INFO L475 AbstractCegarLoop]: Abstraction has 28316 states and 47222 transitions. [2019-09-08 04:18:12,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:18:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 28316 states and 47222 transitions. [2019-09-08 04:18:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-08 04:18:12,735 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:12,735 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, 1, 1, 1, 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 04:18:12,735 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:12,736 INFO L82 PathProgramCache]: Analyzing trace with hash -7319953, now seen corresponding path program 1 times [2019-09-08 04:18:12,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:12,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:12,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:12,841 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 04:18:12,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:12,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:18:12,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:18:12,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:18:12,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:18:12,843 INFO L87 Difference]: Start difference. First operand 28316 states and 47222 transitions. Second operand 4 states. [2019-09-08 04:18:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:13,675 INFO L93 Difference]: Finished difference Result 56373 states and 95543 transitions. [2019-09-08 04:18:13,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:18:13,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-09-08 04:18:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:13,819 INFO L225 Difference]: With dead ends: 56373 [2019-09-08 04:18:13,819 INFO L226 Difference]: Without dead ends: 28079 [2019-09-08 04:18:13,901 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 04:18:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28079 states. [2019-09-08 04:18:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28079 to 28003. [2019-09-08 04:18:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28003 states. [2019-09-08 04:18:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28003 states to 28003 states and 46624 transitions. [2019-09-08 04:18:16,166 INFO L78 Accepts]: Start accepts. Automaton has 28003 states and 46624 transitions. Word has length 151 [2019-09-08 04:18:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:16,167 INFO L475 AbstractCegarLoop]: Abstraction has 28003 states and 46624 transitions. [2019-09-08 04:18:16,167 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:18:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 28003 states and 46624 transitions. [2019-09-08 04:18:16,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-08 04:18:16,170 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:16,171 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, 1, 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 04:18:16,171 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:16,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1886003740, now seen corresponding path program 1 times [2019-09-08 04:18:16,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:16,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:16,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:16,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:16,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:16,306 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 04:18:16,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:16,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:18:16,307 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:18:16,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:18:16,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:18:16,307 INFO L87 Difference]: Start difference. First operand 28003 states and 46624 transitions. Second operand 7 states. [2019-09-08 04:18:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:19,929 INFO L93 Difference]: Finished difference Result 84221 states and 147117 transitions. [2019-09-08 04:18:19,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:18:19,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2019-09-08 04:18:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:20,213 INFO L225 Difference]: With dead ends: 84221 [2019-09-08 04:18:20,213 INFO L226 Difference]: Without dead ends: 56252 [2019-09-08 04:18:20,674 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 04:18:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56252 states. [2019-09-08 04:18:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56252 to 55968. [2019-09-08 04:18:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55968 states. [2019-09-08 04:18:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55968 states to 55968 states and 97390 transitions. [2019-09-08 04:18:24,841 INFO L78 Accepts]: Start accepts. Automaton has 55968 states and 97390 transitions. Word has length 161 [2019-09-08 04:18:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:24,841 INFO L475 AbstractCegarLoop]: Abstraction has 55968 states and 97390 transitions. [2019-09-08 04:18:24,841 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:18:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 55968 states and 97390 transitions. [2019-09-08 04:18:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-09-08 04:18:24,844 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:24,845 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, 1, 1, 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 04:18:24,845 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1665494790, now seen corresponding path program 1 times [2019-09-08 04:18:24,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:24,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:24,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:24,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:24,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:24,961 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 04:18:24,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:24,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:18:24,962 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:18:24,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:18:24,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:18:24,963 INFO L87 Difference]: Start difference. First operand 55968 states and 97390 transitions. Second operand 4 states. [2019-09-08 04:18:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:27,004 INFO L93 Difference]: Finished difference Result 111526 states and 198863 transitions. [2019-09-08 04:18:27,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:18:27,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-09-08 04:18:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:27,333 INFO L225 Difference]: With dead ends: 111526 [2019-09-08 04:18:27,333 INFO L226 Difference]: Without dead ends: 55574 [2019-09-08 04:18:27,571 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 04:18:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55574 states. [2019-09-08 04:18:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55574 to 55430. [2019-09-08 04:18:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55430 states. [2019-09-08 04:18:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55430 states to 55430 states and 96240 transitions. [2019-09-08 04:18:29,763 INFO L78 Accepts]: Start accepts. Automaton has 55430 states and 96240 transitions. Word has length 162 [2019-09-08 04:18:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:29,764 INFO L475 AbstractCegarLoop]: Abstraction has 55430 states and 96240 transitions. [2019-09-08 04:18:29,764 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:18:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 55430 states and 96240 transitions. [2019-09-08 04:18:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-09-08 04:18:29,766 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:29,766 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, 1, 1, 1, 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 04:18:29,767 INFO L418 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash 751071345, now seen corresponding path program 1 times [2019-09-08 04:18:29,767 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:29,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:29,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:29,952 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 04:18:29,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:29,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 04:18:29,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:18:29,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:18:29,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:18:29,954 INFO L87 Difference]: Start difference. First operand 55430 states and 96240 transitions. Second operand 12 states. [2019-09-08 04:18:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:39,972 INFO L93 Difference]: Finished difference Result 189162 states and 346712 transitions. [2019-09-08 04:18:39,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 04:18:39,974 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 163 [2019-09-08 04:18:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:40,682 INFO L225 Difference]: With dead ends: 189162 [2019-09-08 04:18:40,683 INFO L226 Difference]: Without dead ends: 133766 [2019-09-08 04:18:41,005 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 04:18:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133766 states. [2019-09-08 04:18:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133766 to 133434. [2019-09-08 04:18:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133434 states. [2019-09-08 04:18:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133434 states to 133434 states and 233350 transitions. [2019-09-08 04:18:49,382 INFO L78 Accepts]: Start accepts. Automaton has 133434 states and 233350 transitions. Word has length 163 [2019-09-08 04:18:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:49,383 INFO L475 AbstractCegarLoop]: Abstraction has 133434 states and 233350 transitions. [2019-09-08 04:18:49,383 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:18:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 133434 states and 233350 transitions. [2019-09-08 04:18:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-08 04:18:49,385 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:49,385 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, 1, 1, 1, 1, 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 04:18:49,385 INFO L418 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1850666730, now seen corresponding path program 1 times [2019-09-08 04:18:49,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:49,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:49,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:49,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:49,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:49,565 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 04:18:49,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:18:49,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 04:18:49,566 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:18:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:18:49,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:18:49,566 INFO L87 Difference]: Start difference. First operand 133434 states and 233350 transitions. Second operand 12 states. [2019-09-08 04:19:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:08,934 INFO L93 Difference]: Finished difference Result 437403 states and 791869 transitions. [2019-09-08 04:19:08,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 04:19:08,935 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 164 [2019-09-08 04:19:08,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:11,471 INFO L225 Difference]: With dead ends: 437403 [2019-09-08 04:19:11,471 INFO L226 Difference]: Without dead ends: 303971 [2019-09-08 04:19:12,485 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 04:19:12,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303971 states. [2019-09-08 04:19:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303971 to 299167. [2019-09-08 04:19:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299167 states. [2019-09-08 04:19:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299167 states to 299167 states and 520477 transitions. [2019-09-08 04:19:34,573 INFO L78 Accepts]: Start accepts. Automaton has 299167 states and 520477 transitions. Word has length 164 [2019-09-08 04:19:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:34,574 INFO L475 AbstractCegarLoop]: Abstraction has 299167 states and 520477 transitions. [2019-09-08 04:19:34,574 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:19:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 299167 states and 520477 transitions. [2019-09-08 04:19:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-09-08 04:19:34,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:34,578 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, 1, 1, 1, 1, 1, 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 04:19:34,578 INFO L418 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:34,578 INFO L82 PathProgramCache]: Analyzing trace with hash -403875443, now seen corresponding path program 1 times [2019-09-08 04:19:34,579 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:34,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:34,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:34,788 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 04:19:34,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:19:34,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 04:19:34,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:19:34,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:19:34,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:19:34,793 INFO L87 Difference]: Start difference. First operand 299167 states and 520477 transitions. Second operand 12 states. [2019-09-08 04:20:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:17,545 INFO L93 Difference]: Finished difference Result 837296 states and 1499048 transitions. [2019-09-08 04:20:17,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 04:20:17,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2019-09-08 04:20:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:32,498 INFO L225 Difference]: With dead ends: 837296 [2019-09-08 04:20:32,498 INFO L226 Difference]: Without dead ends: 537419 [2019-09-08 04:20:36,397 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 04:20:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537419 states. [2019-09-08 04:21:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537419 to 526659. [2019-09-08 04:21:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526659 states. [2019-09-08 04:21:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526659 states to 526659 states and 911097 transitions. [2019-09-08 04:21:29,627 INFO L78 Accepts]: Start accepts. Automaton has 526659 states and 911097 transitions. Word has length 165 [2019-09-08 04:21:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:21:29,628 INFO L475 AbstractCegarLoop]: Abstraction has 526659 states and 911097 transitions. [2019-09-08 04:21:29,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:21:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 526659 states and 911097 transitions. [2019-09-08 04:21:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-08 04:21:29,630 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:21:29,630 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, 1, 1, 1, 1, 1, 1, 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 04:21:29,630 INFO L418 AbstractCegarLoop]: === Iteration 24 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:21:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:21:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1993274482, now seen corresponding path program 1 times [2019-09-08 04:21:29,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:21:29,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:21:29,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:21:29,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:21:29,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:21:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:21:29,808 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 04:21:29,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:21:29,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 04:21:29,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:21:29,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:21:29,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:21:29,814 INFO L87 Difference]: Start difference. First operand 526659 states and 911097 transitions. Second operand 12 states.