java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:04,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:04,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:04,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:04,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:04,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:04,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:04,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:04,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:04,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:04,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:04,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:04,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:04,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:04,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:04,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:04,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:04,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:04,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:04,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:04,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:04,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:04,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:04,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:04,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:04,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:04,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:04,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:04,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:04,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:04,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:04,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:04,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:04,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:04,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:04,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:04,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:04,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:04,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:04,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:04,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:04,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:04,965 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:04,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:04,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:04,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:04,970 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:04,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:04,971 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:04,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:04,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:04,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:04,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:04,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:04,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:04,973 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:04,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:04,974 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:04,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:04,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:04,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:04,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:04,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:04,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:04,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:04,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:04,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:04,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:04,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:04,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:04,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:05,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:05,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:05,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:05,295 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:05,296 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:05,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-10-13 21:12:05,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22347f879/6455ed15c51e4a13a2a44b759bb6b8ba/FLAG2aec1dcbe [2019-10-13 21:12:06,058 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:06,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-10-13 21:12:06,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22347f879/6455ed15c51e4a13a2a44b759bb6b8ba/FLAG2aec1dcbe [2019-10-13 21:12:06,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22347f879/6455ed15c51e4a13a2a44b759bb6b8ba [2019-10-13 21:12:06,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:06,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:06,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:06,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:06,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:06,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:06" (1/1) ... [2019-10-13 21:12:06,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4be3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:06, skipping insertion in model container [2019-10-13 21:12:06,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:06" (1/1) ... [2019-10-13 21:12:06,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:06,333 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:07,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:07,068 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:07,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:07,282 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:07,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07 WrapperNode [2019-10-13 21:12:07,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:07,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:07,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:07,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:07,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:07,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:07,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:07,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:07,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:07,583 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:07,583 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:07,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:07,583 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:12:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:12:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:07,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:07,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:07,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:07,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:07,588 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:07,588 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:07,588 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:07,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:07,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:07,589 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:07,589 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:07,590 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:12:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:12:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:07,607 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:07,607 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:07,607 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:07,607 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:10,170 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:10,170 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:10,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:10 BoogieIcfgContainer [2019-10-13 21:12:10,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:10,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:10,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:10,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:10,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:06" (1/3) ... [2019-10-13 21:12:10,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0cb047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:10, skipping insertion in model container [2019-10-13 21:12:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (2/3) ... [2019-10-13 21:12:10,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0cb047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:10, skipping insertion in model container [2019-10-13 21:12:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:10" (3/3) ... [2019-10-13 21:12:10,180 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2019-10-13 21:12:10,190 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:10,201 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:10,213 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:10,252 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:10,252 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:10,253 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:10,253 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:10,253 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:10,253 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:10,253 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:10,253 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states. [2019-10-13 21:12:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 21:12:10,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:10,341 INFO L380 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] [2019-10-13 21:12:10,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:10,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1507991037, now seen corresponding path program 1 times [2019-10-13 21:12:10,358 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:10,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973586006] [2019-10-13 21:12:10,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:10,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:10,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:11,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973586006] [2019-10-13 21:12:11,162 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:11,162 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:11,163 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876604771] [2019-10-13 21:12:11,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:11,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:11,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:11,191 INFO L87 Difference]: Start difference. First operand 809 states. Second operand 7 states. [2019-10-13 21:12:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:11,484 INFO L93 Difference]: Finished difference Result 1297 states and 2094 transitions. [2019-10-13 21:12:11,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:11,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-13 21:12:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:11,524 INFO L225 Difference]: With dead ends: 1297 [2019-10-13 21:12:11,524 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:12:11,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:12:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2019-10-13 21:12:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-10-13 21:12:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1042 transitions. [2019-10-13 21:12:11,715 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1042 transitions. Word has length 132 [2019-10-13 21:12:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:11,716 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 1042 transitions. [2019-10-13 21:12:11,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1042 transitions. [2019-10-13 21:12:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 21:12:11,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:11,736 INFO L380 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] [2019-10-13 21:12:11,737 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 740042646, now seen corresponding path program 1 times [2019-10-13 21:12:11,737 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:11,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958575815] [2019-10-13 21:12:11,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:12,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958575815] [2019-10-13 21:12:12,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:12,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179677250] [2019-10-13 21:12:12,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:12,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:12,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:12,035 INFO L87 Difference]: Start difference. First operand 655 states and 1042 transitions. Second operand 4 states. [2019-10-13 21:12:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:12,128 INFO L93 Difference]: Finished difference Result 1276 states and 2049 transitions. [2019-10-13 21:12:12,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:12,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-13 21:12:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:12,143 INFO L225 Difference]: With dead ends: 1276 [2019-10-13 21:12:12,144 INFO L226 Difference]: Without dead ends: 637 [2019-10-13 21:12:12,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-13 21:12:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2019-10-13 21:12:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2019-10-13 21:12:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1009 transitions. [2019-10-13 21:12:12,181 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1009 transitions. Word has length 133 [2019-10-13 21:12:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,182 INFO L462 AbstractCegarLoop]: Abstraction has 637 states and 1009 transitions. [2019-10-13 21:12:12,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1009 transitions. [2019-10-13 21:12:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 21:12:12,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,188 INFO L380 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] [2019-10-13 21:12:12,188 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1282679504, now seen corresponding path program 1 times [2019-10-13 21:12:12,189 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817524575] [2019-10-13 21:12:12,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:12,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817524575] [2019-10-13 21:12:12,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:12,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020348596] [2019-10-13 21:12:12,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:12,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:12,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:12,415 INFO L87 Difference]: Start difference. First operand 637 states and 1009 transitions. Second operand 7 states. [2019-10-13 21:12:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:12,535 INFO L93 Difference]: Finished difference Result 1245 states and 1991 transitions. [2019-10-13 21:12:12,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:12,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-13 21:12:12,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:12,546 INFO L225 Difference]: With dead ends: 1245 [2019-10-13 21:12:12,547 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:12,551 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 996 transitions. [2019-10-13 21:12:12,603 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 996 transitions. Word has length 133 [2019-10-13 21:12:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,604 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 996 transitions. [2019-10-13 21:12:12,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 996 transitions. [2019-10-13 21:12:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 21:12:12,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,611 INFO L380 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] [2019-10-13 21:12:12,612 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1828246713, now seen corresponding path program 1 times [2019-10-13 21:12:12,612 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002661286] [2019-10-13 21:12:12,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:12,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002661286] [2019-10-13 21:12:12,893 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:12,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24665846] [2019-10-13 21:12:12,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:12,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:12,896 INFO L87 Difference]: Start difference. First operand 631 states and 996 transitions. Second operand 7 states. [2019-10-13 21:12:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,013 INFO L93 Difference]: Finished difference Result 1233 states and 1965 transitions. [2019-10-13 21:12:13,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-13 21:12:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,021 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:12:13,021 INFO L226 Difference]: Without dead ends: 625 [2019-10-13 21:12:13,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-13 21:12:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2019-10-13 21:12:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-13 21:12:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 983 transitions. [2019-10-13 21:12:13,052 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 983 transitions. Word has length 134 [2019-10-13 21:12:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,053 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 983 transitions. [2019-10-13 21:12:13,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 983 transitions. [2019-10-13 21:12:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 21:12:13,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,058 INFO L380 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] [2019-10-13 21:12:13,058 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1089888596, now seen corresponding path program 1 times [2019-10-13 21:12:13,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433226348] [2019-10-13 21:12:13,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:13,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433226348] [2019-10-13 21:12:13,241 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,242 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047317574] [2019-10-13 21:12:13,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,243 INFO L87 Difference]: Start difference. First operand 625 states and 983 transitions. Second operand 7 states. [2019-10-13 21:12:13,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,335 INFO L93 Difference]: Finished difference Result 1221 states and 1939 transitions. [2019-10-13 21:12:13,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-13 21:12:13,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,342 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:12:13,342 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:12:13,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:12:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-13 21:12:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:12:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 970 transitions. [2019-10-13 21:12:13,372 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 970 transitions. Word has length 135 [2019-10-13 21:12:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,372 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 970 transitions. [2019-10-13 21:12:13,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 970 transitions. [2019-10-13 21:12:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 21:12:13,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,377 INFO L380 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] [2019-10-13 21:12:13,378 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1231176309, now seen corresponding path program 1 times [2019-10-13 21:12:13,379 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931664888] [2019-10-13 21:12:13,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:13,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931664888] [2019-10-13 21:12:13,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662141079] [2019-10-13 21:12:13,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,541 INFO L87 Difference]: Start difference. First operand 619 states and 970 transitions. Second operand 7 states. [2019-10-13 21:12:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,688 INFO L93 Difference]: Finished difference Result 1209 states and 1913 transitions. [2019-10-13 21:12:13,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-13 21:12:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,699 INFO L225 Difference]: With dead ends: 1209 [2019-10-13 21:12:13,699 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:12:13,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:12:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-13 21:12:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:12:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 969 transitions. [2019-10-13 21:12:13,734 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 969 transitions. Word has length 135 [2019-10-13 21:12:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,734 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 969 transitions. [2019-10-13 21:12:13,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 969 transitions. [2019-10-13 21:12:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 21:12:13,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,739 INFO L380 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] [2019-10-13 21:12:13,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1930370187, now seen corresponding path program 1 times [2019-10-13 21:12:13,740 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779437930] [2019-10-13 21:12:13,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:13,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779437930] [2019-10-13 21:12:13,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:13,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696749287] [2019-10-13 21:12:13,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:13,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:13,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:13,924 INFO L87 Difference]: Start difference. First operand 619 states and 969 transitions. Second operand 5 states. [2019-10-13 21:12:14,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,006 INFO L93 Difference]: Finished difference Result 1208 states and 1910 transitions. [2019-10-13 21:12:14,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-10-13 21:12:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,012 INFO L225 Difference]: With dead ends: 1208 [2019-10-13 21:12:14,013 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:12:14,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:12:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-13 21:12:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:12:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 968 transitions. [2019-10-13 21:12:14,047 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 968 transitions. Word has length 136 [2019-10-13 21:12:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,048 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 968 transitions. [2019-10-13 21:12:14,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 968 transitions. [2019-10-13 21:12:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 21:12:14,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,057 INFO L380 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] [2019-10-13 21:12:14,058 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,058 INFO L82 PathProgramCache]: Analyzing trace with hash 871571742, now seen corresponding path program 1 times [2019-10-13 21:12:14,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966240967] [2019-10-13 21:12:14,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:14,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966240967] [2019-10-13 21:12:14,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,285 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383412731] [2019-10-13 21:12:14,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,286 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,287 INFO L87 Difference]: Start difference. First operand 619 states and 968 transitions. Second operand 5 states. [2019-10-13 21:12:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,381 INFO L93 Difference]: Finished difference Result 1208 states and 1908 transitions. [2019-10-13 21:12:14,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-10-13 21:12:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,390 INFO L225 Difference]: With dead ends: 1208 [2019-10-13 21:12:14,390 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:12:14,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:12:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-13 21:12:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:12:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 967 transitions. [2019-10-13 21:12:14,429 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 967 transitions. Word has length 137 [2019-10-13 21:12:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,430 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 967 transitions. [2019-10-13 21:12:14,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 967 transitions. [2019-10-13 21:12:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 21:12:14,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,434 INFO L380 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] [2019-10-13 21:12:14,435 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1780748582, now seen corresponding path program 1 times [2019-10-13 21:12:14,436 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729860185] [2019-10-13 21:12:14,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:14,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729860185] [2019-10-13 21:12:14,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740302053] [2019-10-13 21:12:14,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,648 INFO L87 Difference]: Start difference. First operand 619 states and 967 transitions. Second operand 5 states. [2019-10-13 21:12:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,718 INFO L93 Difference]: Finished difference Result 1208 states and 1906 transitions. [2019-10-13 21:12:14,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-13 21:12:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,724 INFO L225 Difference]: With dead ends: 1208 [2019-10-13 21:12:14,725 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:12:14,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:12:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-13 21:12:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:12:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 966 transitions. [2019-10-13 21:12:14,755 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 966 transitions. Word has length 138 [2019-10-13 21:12:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,755 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 966 transitions. [2019-10-13 21:12:14,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 966 transitions. [2019-10-13 21:12:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 21:12:14,761 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,761 INFO L380 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] [2019-10-13 21:12:14,762 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1716506909, now seen corresponding path program 1 times [2019-10-13 21:12:14,763 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,763 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307920648] [2019-10-13 21:12:14,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:14,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307920648] [2019-10-13 21:12:14,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216582761] [2019-10-13 21:12:14,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,910 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,910 INFO L87 Difference]: Start difference. First operand 619 states and 966 transitions. Second operand 5 states. [2019-10-13 21:12:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,970 INFO L93 Difference]: Finished difference Result 1208 states and 1904 transitions. [2019-10-13 21:12:14,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-13 21:12:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,976 INFO L225 Difference]: With dead ends: 1208 [2019-10-13 21:12:14,976 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:12:14,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:12:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-13 21:12:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:12:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 965 transitions. [2019-10-13 21:12:15,002 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 965 transitions. Word has length 139 [2019-10-13 21:12:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,003 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 965 transitions. [2019-10-13 21:12:15,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 965 transitions. [2019-10-13 21:12:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 21:12:15,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,007 INFO L380 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] [2019-10-13 21:12:15,007 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash 956778047, now seen corresponding path program 1 times [2019-10-13 21:12:15,008 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427295210] [2019-10-13 21:12:15,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:12:15,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427295210] [2019-10-13 21:12:15,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536991622] [2019-10-13 21:12:15,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:15,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:16,036 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:16,199 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:16,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 21:12:16,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058579448] [2019-10-13 21:12:16,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:16,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:16,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:12:16,202 INFO L87 Difference]: Start difference. First operand 619 states and 965 transitions. Second operand 3 states. [2019-10-13 21:12:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,295 INFO L93 Difference]: Finished difference Result 1736 states and 2755 transitions. [2019-10-13 21:12:16,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:16,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-13 21:12:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,307 INFO L225 Difference]: With dead ends: 1736 [2019-10-13 21:12:16,307 INFO L226 Difference]: Without dead ends: 1151 [2019-10-13 21:12:16,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:12:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2019-10-13 21:12:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1138. [2019-10-13 21:12:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-10-13 21:12:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1793 transitions. [2019-10-13 21:12:16,395 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1793 transitions. Word has length 140 [2019-10-13 21:12:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:16,399 INFO L462 AbstractCegarLoop]: Abstraction has 1138 states and 1793 transitions. [2019-10-13 21:12:16,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1793 transitions. [2019-10-13 21:12:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 21:12:16,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:16,406 INFO L380 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] [2019-10-13 21:12:16,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:16,623 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:16,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1267544599, now seen corresponding path program 1 times [2019-10-13 21:12:16,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:16,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379509626] [2019-10-13 21:12:16,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:12:16,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379509626] [2019-10-13 21:12:16,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747029497] [2019-10-13 21:12:16,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:17,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:17,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:17,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:12:17,785 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:17,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 21:12:17,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846516900] [2019-10-13 21:12:17,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:17,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:17,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:17,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:12:17,787 INFO L87 Difference]: Start difference. First operand 1138 states and 1793 transitions. Second operand 3 states. [2019-10-13 21:12:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:17,889 INFO L93 Difference]: Finished difference Result 2774 states and 4413 transitions. [2019-10-13 21:12:17,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:17,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2019-10-13 21:12:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:17,902 INFO L225 Difference]: With dead ends: 2774 [2019-10-13 21:12:17,902 INFO L226 Difference]: Without dead ends: 1670 [2019-10-13 21:12:17,909 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:12:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2019-10-13 21:12:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1621. [2019-10-13 21:12:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2019-10-13 21:12:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2574 transitions. [2019-10-13 21:12:17,988 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2574 transitions. Word has length 141 [2019-10-13 21:12:17,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:17,988 INFO L462 AbstractCegarLoop]: Abstraction has 1621 states and 2574 transitions. [2019-10-13 21:12:17,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2574 transitions. [2019-10-13 21:12:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 21:12:17,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:17,997 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:18,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:18,206 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1231946461, now seen corresponding path program 1 times [2019-10-13 21:12:18,207 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:18,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304016722] [2019-10-13 21:12:18,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:18,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:18,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:12:18,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304016722] [2019-10-13 21:12:18,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523987552] [2019-10-13 21:12:18,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:19,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:12:19,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:12:19,149 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:12:19,292 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:19,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-13 21:12:19,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703486461] [2019-10-13 21:12:19,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:19,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:19,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:19,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:19,297 INFO L87 Difference]: Start difference. First operand 1621 states and 2574 transitions. Second operand 5 states. [2019-10-13 21:12:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:21,477 INFO L93 Difference]: Finished difference Result 7486 states and 12106 transitions. [2019-10-13 21:12:21,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:21,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-13 21:12:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:21,533 INFO L225 Difference]: With dead ends: 7486 [2019-10-13 21:12:21,534 INFO L226 Difference]: Without dead ends: 5899 [2019-10-13 21:12:21,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2019-10-13 21:12:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 5779. [2019-10-13 21:12:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5779 states. [2019-10-13 21:12:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5779 states to 5779 states and 9174 transitions. [2019-10-13 21:12:21,810 INFO L78 Accepts]: Start accepts. Automaton has 5779 states and 9174 transitions. Word has length 143 [2019-10-13 21:12:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:21,811 INFO L462 AbstractCegarLoop]: Abstraction has 5779 states and 9174 transitions. [2019-10-13 21:12:21,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5779 states and 9174 transitions. [2019-10-13 21:12:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:12:21,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:21,820 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:22,028 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:22,029 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:22,030 INFO L82 PathProgramCache]: Analyzing trace with hash 137846317, now seen corresponding path program 1 times [2019-10-13 21:12:22,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:22,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008127201] [2019-10-13 21:12:22,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:22,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:22,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:12:22,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008127201] [2019-10-13 21:12:22,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019343834] [2019-10-13 21:12:22,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:22,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:12:22,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:12:22,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:12:23,012 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:23,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-13 21:12:23,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966695383] [2019-10-13 21:12:23,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:23,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:23,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:23,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:23,014 INFO L87 Difference]: Start difference. First operand 5779 states and 9174 transitions. Second operand 3 states. [2019-10-13 21:12:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:23,425 INFO L93 Difference]: Finished difference Result 16044 states and 25748 transitions. [2019-10-13 21:12:23,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:23,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:12:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:23,530 INFO L225 Difference]: With dead ends: 16044 [2019-10-13 21:12:23,530 INFO L226 Difference]: Without dead ends: 10340 [2019-10-13 21:12:23,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10340 states. [2019-10-13 21:12:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10340 to 10237. [2019-10-13 21:12:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10237 states. [2019-10-13 21:12:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10237 states to 10237 states and 16296 transitions. [2019-10-13 21:12:24,125 INFO L78 Accepts]: Start accepts. Automaton has 10237 states and 16296 transitions. Word has length 149 [2019-10-13 21:12:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:24,126 INFO L462 AbstractCegarLoop]: Abstraction has 10237 states and 16296 transitions. [2019-10-13 21:12:24,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 10237 states and 16296 transitions. [2019-10-13 21:12:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:12:24,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:24,136 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:24,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:24,344 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:24,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1425532853, now seen corresponding path program 1 times [2019-10-13 21:12:24,345 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:24,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705764331] [2019-10-13 21:12:24,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:24,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:24,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:12:25,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705764331] [2019-10-13 21:12:25,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253565261] [2019-10-13 21:12:25,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:25,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:12:25,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:12:26,097 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:26,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:26,493 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:26,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-10-13 21:12:26,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106174427] [2019-10-13 21:12:26,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:12:26,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:12:26,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:26,496 INFO L87 Difference]: Start difference. First operand 10237 states and 16296 transitions. Second operand 15 states. [2019-10-13 21:12:33,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:33,456 INFO L93 Difference]: Finished difference Result 23122 states and 37223 transitions. [2019-10-13 21:12:33,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 21:12:33,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2019-10-13 21:12:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:33,553 INFO L225 Difference]: With dead ends: 23122 [2019-10-13 21:12:33,553 INFO L226 Difference]: Without dead ends: 12903 [2019-10-13 21:12:33,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 285 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:12:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2019-10-13 21:12:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 12822. [2019-10-13 21:12:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12822 states. [2019-10-13 21:12:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 20446 transitions. [2019-10-13 21:12:34,171 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 20446 transitions. Word has length 148 [2019-10-13 21:12:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:34,173 INFO L462 AbstractCegarLoop]: Abstraction has 12822 states and 20446 transitions. [2019-10-13 21:12:34,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:12:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 20446 transitions. [2019-10-13 21:12:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 21:12:34,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:34,183 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:34,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:34,391 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:34,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1349992585, now seen corresponding path program 1 times [2019-10-13 21:12:34,392 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:34,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021645317] [2019-10-13 21:12:34,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:34,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:34,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:12:34,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021645317] [2019-10-13 21:12:34,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149777365] [2019-10-13 21:12:34,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:35,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:12:35,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:12:35,275 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:35,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:35,798 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:35,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-10-13 21:12:35,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054946653] [2019-10-13 21:12:35,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:12:35,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:35,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:12:35,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:35,800 INFO L87 Difference]: Start difference. First operand 12822 states and 20446 transitions. Second operand 15 states.