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 0.1.24-13a467a-m [2019-10-15 01:11:07,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:07,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:07,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:07,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:07,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:07,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:07,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:07,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:07,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:07,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:07,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:07,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:07,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:07,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:07,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:07,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:07,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:07,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:07,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:07,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:07,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:07,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:07,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:07,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:07,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:07,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:07,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:07,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:07,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:07,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:07,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:07,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:07,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:07,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:07,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:07,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:07,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:07,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:07,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:07,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:07,662 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 [2019-10-15 01:11:07,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:07,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:07,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:07,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:07,685 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:07,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:07,685 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:07,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:07,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:07,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:07,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:07,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:07,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:07,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:07,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:07,688 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:07,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:07,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:07,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:07,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:07,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:07,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:07,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:07,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:07,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:07,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:07,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:07,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:07,691 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 [2019-10-15 01:11:07,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:08,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:08,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:08,018 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:08,019 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:08,019 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-10-15 01:11:08,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b779b14/1ede783e8f744f429b474c77ebd6fcc5/FLAG958d2583e [2019-10-15 01:11:08,817 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:08,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-10-15 01:11:08,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b779b14/1ede783e8f744f429b474c77ebd6fcc5/FLAG958d2583e [2019-10-15 01:11:08,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b779b14/1ede783e8f744f429b474c77ebd6fcc5 [2019-10-15 01:11:08,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:09,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:09,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:09,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:09,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:09,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:08" (1/1) ... [2019-10-15 01:11:09,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b14516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:09, skipping insertion in model container [2019-10-15 01:11:09,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:08" (1/1) ... [2019-10-15 01:11:09,021 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:09,105 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:09,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:09,774 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:09,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:10,056 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:10,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10 WrapperNode [2019-10-15 01:11:10,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:10,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:10,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:10,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:10,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:10,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:10,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:10,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:10,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (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 [2019-10-15 01:11:10,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:10,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:10,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:10,354 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:10,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:10,356 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:10,356 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:10,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:10,356 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:11:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:11:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:11:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:11:10,371 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:10,371 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:10,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:11:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:11:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:12,895 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:12,895 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:12,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:12 BoogieIcfgContainer [2019-10-15 01:11:12,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:12,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:12,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:12,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:12,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:08" (1/3) ... [2019-10-15 01:11:12,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fffe18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:12, skipping insertion in model container [2019-10-15 01:11:12,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10" (2/3) ... [2019-10-15 01:11:12,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fffe18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:12, skipping insertion in model container [2019-10-15 01:11:12,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:12" (3/3) ... [2019-10-15 01:11:12,906 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2019-10-15 01:11:12,917 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:12,928 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:12,939 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:12,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:12,978 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:12,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:12,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:12,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:12,978 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:12,979 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:12,979 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states. [2019-10-15 01:11:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:11:13,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:13,056 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] [2019-10-15 01:11:13,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:13,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1507991037, now seen corresponding path program 1 times [2019-10-15 01:11:13,075 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:13,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361242229] [2019-10-15 01:11:13,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:13,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:13,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:13,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361242229] [2019-10-15 01:11:13,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:13,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:13,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752643073] [2019-10-15 01:11:13,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:13,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:13,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:13,877 INFO L87 Difference]: Start difference. First operand 809 states. Second operand 7 states. [2019-10-15 01:11:14,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:14,163 INFO L93 Difference]: Finished difference Result 1297 states and 2094 transitions. [2019-10-15 01:11:14,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:14,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-15 01:11:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:14,193 INFO L225 Difference]: With dead ends: 1297 [2019-10-15 01:11:14,193 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:11:14,207 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 [2019-10-15 01:11:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:11:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2019-10-15 01:11:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-10-15 01:11:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1042 transitions. [2019-10-15 01:11:14,380 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1042 transitions. Word has length 132 [2019-10-15 01:11:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:14,381 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 1042 transitions. [2019-10-15 01:11:14,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1042 transitions. [2019-10-15 01:11:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:11:14,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:14,408 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] [2019-10-15 01:11:14,408 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:14,409 INFO L82 PathProgramCache]: Analyzing trace with hash 740042646, now seen corresponding path program 1 times [2019-10-15 01:11:14,409 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:14,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935667893] [2019-10-15 01:11:14,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:14,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935667893] [2019-10-15 01:11:14,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:14,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:14,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916901069] [2019-10-15 01:11:14,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:14,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:14,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:14,724 INFO L87 Difference]: Start difference. First operand 655 states and 1042 transitions. Second operand 4 states. [2019-10-15 01:11:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:14,815 INFO L93 Difference]: Finished difference Result 1276 states and 2049 transitions. [2019-10-15 01:11:14,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:14,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-15 01:11:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:14,823 INFO L225 Difference]: With dead ends: 1276 [2019-10-15 01:11:14,823 INFO L226 Difference]: Without dead ends: 637 [2019-10-15 01:11:14,827 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 [2019-10-15 01:11:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-15 01:11:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2019-10-15 01:11:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2019-10-15 01:11:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1009 transitions. [2019-10-15 01:11:14,867 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1009 transitions. Word has length 133 [2019-10-15 01:11:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:14,867 INFO L462 AbstractCegarLoop]: Abstraction has 637 states and 1009 transitions. [2019-10-15 01:11:14,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1009 transitions. [2019-10-15 01:11:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:11:14,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:14,873 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] [2019-10-15 01:11:14,873 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:14,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1282679504, now seen corresponding path program 1 times [2019-10-15 01:11:14,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:14,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084854044] [2019-10-15 01:11:14,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:15,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084854044] [2019-10-15 01:11:15,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:15,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:15,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457649653] [2019-10-15 01:11:15,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:15,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:15,091 INFO L87 Difference]: Start difference. First operand 637 states and 1009 transitions. Second operand 7 states. [2019-10-15 01:11:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:15,203 INFO L93 Difference]: Finished difference Result 1245 states and 1991 transitions. [2019-10-15 01:11:15,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:15,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-15 01:11:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:15,210 INFO L225 Difference]: With dead ends: 1245 [2019-10-15 01:11:15,210 INFO L226 Difference]: Without dead ends: 631 [2019-10-15 01:11:15,214 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 [2019-10-15 01:11:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-15 01:11:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-15 01:11:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-15 01:11:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 996 transitions. [2019-10-15 01:11:15,242 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 996 transitions. Word has length 133 [2019-10-15 01:11:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:15,242 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 996 transitions. [2019-10-15 01:11:15,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 996 transitions. [2019-10-15 01:11:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:11:15,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:15,248 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] [2019-10-15 01:11:15,248 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1828246713, now seen corresponding path program 1 times [2019-10-15 01:11:15,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:15,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296222309] [2019-10-15 01:11:15,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:15,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296222309] [2019-10-15 01:11:15,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:15,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:15,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901211375] [2019-10-15 01:11:15,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:15,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:15,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:15,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:15,496 INFO L87 Difference]: Start difference. First operand 631 states and 996 transitions. Second operand 7 states. [2019-10-15 01:11:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:15,586 INFO L93 Difference]: Finished difference Result 1233 states and 1965 transitions. [2019-10-15 01:11:15,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:15,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-15 01:11:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:15,592 INFO L225 Difference]: With dead ends: 1233 [2019-10-15 01:11:15,592 INFO L226 Difference]: Without dead ends: 625 [2019-10-15 01:11:15,595 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 [2019-10-15 01:11:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-15 01:11:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2019-10-15 01:11:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-15 01:11:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 983 transitions. [2019-10-15 01:11:15,619 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 983 transitions. Word has length 134 [2019-10-15 01:11:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:15,620 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 983 transitions. [2019-10-15 01:11:15,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 983 transitions. [2019-10-15 01:11:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:11:15,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:15,624 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] [2019-10-15 01:11:15,625 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1089888596, now seen corresponding path program 1 times [2019-10-15 01:11:15,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:15,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145528431] [2019-10-15 01:11:15,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:15,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145528431] [2019-10-15 01:11:15,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:15,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:15,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361669413] [2019-10-15 01:11:15,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:15,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:15,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:15,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:15,778 INFO L87 Difference]: Start difference. First operand 625 states and 983 transitions. Second operand 7 states. [2019-10-15 01:11:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:15,864 INFO L93 Difference]: Finished difference Result 1221 states and 1939 transitions. [2019-10-15 01:11:15,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:15,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-15 01:11:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:15,870 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:11:15,870 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:11:15,873 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 [2019-10-15 01:11:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:11:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:11:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:11:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 970 transitions. [2019-10-15 01:11:15,897 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 970 transitions. Word has length 135 [2019-10-15 01:11:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:15,898 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 970 transitions. [2019-10-15 01:11:15,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 970 transitions. [2019-10-15 01:11:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:11:15,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:15,903 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] [2019-10-15 01:11:15,904 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:15,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1231176309, now seen corresponding path program 1 times [2019-10-15 01:11:15,904 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:15,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388571134] [2019-10-15 01:11:15,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:16,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388571134] [2019-10-15 01:11:16,125 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,125 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:16,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702974292] [2019-10-15 01:11:16,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:16,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:16,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:16,127 INFO L87 Difference]: Start difference. First operand 619 states and 970 transitions. Second operand 7 states. [2019-10-15 01:11:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:16,214 INFO L93 Difference]: Finished difference Result 1209 states and 1913 transitions. [2019-10-15 01:11:16,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:16,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-15 01:11:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:16,220 INFO L225 Difference]: With dead ends: 1209 [2019-10-15 01:11:16,220 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:11:16,224 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 [2019-10-15 01:11:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:11:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:11:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:11:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 969 transitions. [2019-10-15 01:11:16,247 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 969 transitions. Word has length 135 [2019-10-15 01:11:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,248 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 969 transitions. [2019-10-15 01:11:16,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 969 transitions. [2019-10-15 01:11:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:11:16,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,252 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] [2019-10-15 01:11:16,253 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1930370187, now seen corresponding path program 1 times [2019-10-15 01:11:16,253 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702364691] [2019-10-15 01:11:16,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:16,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702364691] [2019-10-15 01:11:16,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:16,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480164676] [2019-10-15 01:11:16,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:16,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:16,393 INFO L87 Difference]: Start difference. First operand 619 states and 969 transitions. Second operand 5 states. [2019-10-15 01:11:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:16,476 INFO L93 Difference]: Finished difference Result 1208 states and 1910 transitions. [2019-10-15 01:11:16,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:16,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-10-15 01:11:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:16,482 INFO L225 Difference]: With dead ends: 1208 [2019-10-15 01:11:16,483 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:11:16,486 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 [2019-10-15 01:11:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:11:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:11:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:11:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 968 transitions. [2019-10-15 01:11:16,511 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 968 transitions. Word has length 136 [2019-10-15 01:11:16,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,512 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 968 transitions. [2019-10-15 01:11:16,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 968 transitions. [2019-10-15 01:11:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:11:16,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,517 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] [2019-10-15 01:11:16,517 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash 871571742, now seen corresponding path program 1 times [2019-10-15 01:11:16,518 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459376459] [2019-10-15 01:11:16,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:16,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459376459] [2019-10-15 01:11:16,645 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:16,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363951161] [2019-10-15 01:11:16,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:16,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:16,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:16,647 INFO L87 Difference]: Start difference. First operand 619 states and 968 transitions. Second operand 5 states. [2019-10-15 01:11:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:16,724 INFO L93 Difference]: Finished difference Result 1208 states and 1908 transitions. [2019-10-15 01:11:16,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:16,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-10-15 01:11:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:16,731 INFO L225 Difference]: With dead ends: 1208 [2019-10-15 01:11:16,731 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:11:16,735 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 [2019-10-15 01:11:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:11:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:11:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:11:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 967 transitions. [2019-10-15 01:11:16,763 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 967 transitions. Word has length 137 [2019-10-15 01:11:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,764 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 967 transitions. [2019-10-15 01:11:16,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 967 transitions. [2019-10-15 01:11:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:11:16,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,771 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] [2019-10-15 01:11:16,771 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1780748582, now seen corresponding path program 1 times [2019-10-15 01:11:16,772 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145174027] [2019-10-15 01:11:16,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:16,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145174027] [2019-10-15 01:11:16,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:17,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510271421] [2019-10-15 01:11:17,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:17,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:17,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:17,001 INFO L87 Difference]: Start difference. First operand 619 states and 967 transitions. Second operand 5 states. [2019-10-15 01:11:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,073 INFO L93 Difference]: Finished difference Result 1208 states and 1906 transitions. [2019-10-15 01:11:17,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:17,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-15 01:11:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,078 INFO L225 Difference]: With dead ends: 1208 [2019-10-15 01:11:17,078 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:11:17,082 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 [2019-10-15 01:11:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:11:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:11:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:11:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 966 transitions. [2019-10-15 01:11:17,104 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 966 transitions. Word has length 138 [2019-10-15 01:11:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,105 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 966 transitions. [2019-10-15 01:11:17,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 966 transitions. [2019-10-15 01:11:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:11:17,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,109 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] [2019-10-15 01:11:17,109 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1716506909, now seen corresponding path program 1 times [2019-10-15 01:11:17,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457514493] [2019-10-15 01:11:17,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:17,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457514493] [2019-10-15 01:11:17,241 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:17,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:17,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046439511] [2019-10-15 01:11:17,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:17,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:17,243 INFO L87 Difference]: Start difference. First operand 619 states and 966 transitions. Second operand 5 states. [2019-10-15 01:11:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,318 INFO L93 Difference]: Finished difference Result 1208 states and 1904 transitions. [2019-10-15 01:11:17,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:17,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-15 01:11:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,326 INFO L225 Difference]: With dead ends: 1208 [2019-10-15 01:11:17,326 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:11:17,331 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 [2019-10-15 01:11:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:11:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:11:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:11:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 965 transitions. [2019-10-15 01:11:17,360 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 965 transitions. Word has length 139 [2019-10-15 01:11:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,360 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 965 transitions. [2019-10-15 01:11:17,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 965 transitions. [2019-10-15 01:11:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:11:17,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,366 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] [2019-10-15 01:11:17,366 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash 956778047, now seen corresponding path program 1 times [2019-10-15 01:11:17,367 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806827795] [2019-10-15 01:11:17,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:11:17,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806827795] [2019-10-15 01:11:17,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194294735] [2019-10-15 01:11:17,715 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 [2019-10-15 01:11:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:11:18,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:18,423 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:18,591 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:18,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 01:11:18,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272133590] [2019-10-15 01:11:18,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:18,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:18,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:18,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:11:18,594 INFO L87 Difference]: Start difference. First operand 619 states and 965 transitions. Second operand 3 states. [2019-10-15 01:11:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,699 INFO L93 Difference]: Finished difference Result 1736 states and 2755 transitions. [2019-10-15 01:11:18,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:18,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-15 01:11:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,709 INFO L225 Difference]: With dead ends: 1736 [2019-10-15 01:11:18,710 INFO L226 Difference]: Without dead ends: 1151 [2019-10-15 01:11:18,714 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:11:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2019-10-15 01:11:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1138. [2019-10-15 01:11:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-10-15 01:11:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1793 transitions. [2019-10-15 01:11:18,777 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1793 transitions. Word has length 140 [2019-10-15 01:11:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,781 INFO L462 AbstractCegarLoop]: Abstraction has 1138 states and 1793 transitions. [2019-10-15 01:11:18,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1793 transitions. [2019-10-15 01:11:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 01:11:18,788 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,789 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] [2019-10-15 01:11:18,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:18,996 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1327258357, now seen corresponding path program 1 times [2019-10-15 01:11:18,997 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144158888] [2019-10-15 01:11:18,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:11:19,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144158888] [2019-10-15 01:11:19,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135708328] [2019-10-15 01:11:19,219 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 [2019-10-15 01:11:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:19,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:11:19,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:20,022 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:11:20,150 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:20,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 01:11:20,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916402617] [2019-10-15 01:11:20,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:20,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:20,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:20,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:20,153 INFO L87 Difference]: Start difference. First operand 1138 states and 1793 transitions. Second operand 3 states. [2019-10-15 01:11:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:20,285 INFO L93 Difference]: Finished difference Result 2255 states and 3590 transitions. [2019-10-15 01:11:20,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:20,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-15 01:11:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:20,294 INFO L225 Difference]: With dead ends: 2255 [2019-10-15 01:11:20,295 INFO L226 Difference]: Without dead ends: 1151 [2019-10-15 01:11:20,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2019-10-15 01:11:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1138. [2019-10-15 01:11:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-10-15 01:11:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1790 transitions. [2019-10-15 01:11:20,383 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1790 transitions. Word has length 144 [2019-10-15 01:11:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:20,384 INFO L462 AbstractCegarLoop]: Abstraction has 1138 states and 1790 transitions. [2019-10-15 01:11:20,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1790 transitions. [2019-10-15 01:11:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:11:20,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:20,390 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] [2019-10-15 01:11:20,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:20,607 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1267544599, now seen corresponding path program 1 times [2019-10-15 01:11:20,608 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:20,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111673259] [2019-10-15 01:11:20,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:11:20,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111673259] [2019-10-15 01:11:20,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88515236] [2019-10-15 01:11:20,797 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 [2019-10-15 01:11:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:21,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:11:21,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:21,646 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:11:21,811 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:21,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 01:11:21,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911115785] [2019-10-15 01:11:21,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:21,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:21,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:21,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:11:21,819 INFO L87 Difference]: Start difference. First operand 1138 states and 1790 transitions. Second operand 3 states. [2019-10-15 01:11:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:21,950 INFO L93 Difference]: Finished difference Result 2774 states and 4407 transitions. [2019-10-15 01:11:21,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:21,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2019-10-15 01:11:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:21,963 INFO L225 Difference]: With dead ends: 2774 [2019-10-15 01:11:21,964 INFO L226 Difference]: Without dead ends: 1670 [2019-10-15 01:11:21,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:11:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2019-10-15 01:11:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1621. [2019-10-15 01:11:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2019-10-15 01:11:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2573 transitions. [2019-10-15 01:11:22,061 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2573 transitions. Word has length 141 [2019-10-15 01:11:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,064 INFO L462 AbstractCegarLoop]: Abstraction has 1621 states and 2573 transitions. [2019-10-15 01:11:22,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2573 transitions. [2019-10-15 01:11:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:11:22,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,074 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] [2019-10-15 01:11:22,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:22,290 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1231946461, now seen corresponding path program 1 times [2019-10-15 01:11:22,291 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911435663] [2019-10-15 01:11:22,291 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,291 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:11:22,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911435663] [2019-10-15 01:11:22,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913698360] [2019-10-15 01:11:22,528 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 [2019-10-15 01:11:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:11:23,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:11:23,280 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:11:23,431 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:23,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-15 01:11:23,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940006754] [2019-10-15 01:11:23,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:23,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:23,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:23,438 INFO L87 Difference]: Start difference. First operand 1621 states and 2573 transitions. Second operand 5 states. [2019-10-15 01:11:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,506 INFO L93 Difference]: Finished difference Result 7486 states and 12101 transitions. [2019-10-15 01:11:25,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:25,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-15 01:11:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,557 INFO L225 Difference]: With dead ends: 7486 [2019-10-15 01:11:25,558 INFO L226 Difference]: Without dead ends: 5899 [2019-10-15 01:11:25,574 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 [2019-10-15 01:11:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2019-10-15 01:11:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 5779. [2019-10-15 01:11:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5779 states. [2019-10-15 01:11:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5779 states to 5779 states and 9170 transitions. [2019-10-15 01:11:25,880 INFO L78 Accepts]: Start accepts. Automaton has 5779 states and 9170 transitions. Word has length 143 [2019-10-15 01:11:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,880 INFO L462 AbstractCegarLoop]: Abstraction has 5779 states and 9170 transitions. [2019-10-15 01:11:25,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5779 states and 9170 transitions. [2019-10-15 01:11:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:11:25,893 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,893 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] [2019-10-15 01:11:26,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:26,104 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1919348945, now seen corresponding path program 1 times [2019-10-15 01:11:26,105 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711815884] [2019-10-15 01:11:26,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:11:26,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711815884] [2019-10-15 01:11:26,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788297897] [2019-10-15 01:11:26,302 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 [2019-10-15 01:11:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:11:26,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:11:26,945 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:11:27,064 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:27,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 01:11:27,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915773229] [2019-10-15 01:11:27,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:27,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:27,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:27,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:27,067 INFO L87 Difference]: Start difference. First operand 5779 states and 9170 transitions. Second operand 3 states. [2019-10-15 01:11:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:27,430 INFO L93 Difference]: Finished difference Result 16044 states and 25737 transitions. [2019-10-15 01:11:27,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:27,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:11:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:27,525 INFO L225 Difference]: With dead ends: 16044 [2019-10-15 01:11:27,526 INFO L226 Difference]: Without dead ends: 10340 [2019-10-15 01:11:27,563 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 [2019-10-15 01:11:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10340 states. [2019-10-15 01:11:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10340 to 10237. [2019-10-15 01:11:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10237 states. [2019-10-15 01:11:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10237 states to 10237 states and 16289 transitions. [2019-10-15 01:11:28,739 INFO L78 Accepts]: Start accepts. Automaton has 10237 states and 16289 transitions. Word has length 149 [2019-10-15 01:11:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:28,740 INFO L462 AbstractCegarLoop]: Abstraction has 10237 states and 16289 transitions. [2019-10-15 01:11:28,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10237 states and 16289 transitions. [2019-10-15 01:11:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:11:28,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:28,748 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] [2019-10-15 01:11:28,955 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:28,956 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:28,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:28,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1364501101, now seen corresponding path program 1 times [2019-10-15 01:11:28,957 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:28,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505569794] [2019-10-15 01:11:28,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:28,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:28,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:11:29,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505569794] [2019-10-15 01:11:29,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74803203] [2019-10-15 01:11:29,124 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 [2019-10-15 01:11:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:29,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 01:11:29,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 01:11:29,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:29,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:30,164 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:30,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-10-15 01:11:30,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281459036] [2019-10-15 01:11:30,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:11:30,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:11:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:11:30,167 INFO L87 Difference]: Start difference. First operand 10237 states and 16289 transitions. Second operand 15 states. [2019-10-15 01:11:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:37,111 INFO L93 Difference]: Finished difference Result 23122 states and 37207 transitions. [2019-10-15 01:11:37,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 01:11:37,116 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 149 [2019-10-15 01:11:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:37,203 INFO L225 Difference]: With dead ends: 23122 [2019-10-15 01:11:37,204 INFO L226 Difference]: Without dead ends: 12903 [2019-10-15 01:11:37,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 287 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-10-15 01:11:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2019-10-15 01:11:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 12822. [2019-10-15 01:11:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12822 states. [2019-10-15 01:11:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 20437 transitions. [2019-10-15 01:11:37,799 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 20437 transitions. Word has length 149 [2019-10-15 01:11:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:37,800 INFO L462 AbstractCegarLoop]: Abstraction has 12822 states and 20437 transitions. [2019-10-15 01:11:37,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:11:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 20437 transitions. [2019-10-15 01:11:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 01:11:37,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:37,808 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] [2019-10-15 01:11:38,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:38,017 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1349992585, now seen corresponding path program 1 times [2019-10-15 01:11:38,018 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:38,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532178972] [2019-10-15 01:11:38,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:38,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:38,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:11:38,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532178972] [2019-10-15 01:11:38,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845700210] [2019-10-15 01:11:38,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:38,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 01:11:38,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 01:11:39,018 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:39,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:39,369 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:39,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-10-15 01:11:39,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456565018] [2019-10-15 01:11:39,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:11:39,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:39,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:11:39,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:11:39,371 INFO L87 Difference]: Start difference. First operand 12822 states and 20437 transitions. Second operand 15 states.