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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:35,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:35,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:35,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:35,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:35,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:35,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:35,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:35,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:35,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:35,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:35,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:35,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:35,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:35,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:35,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:35,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:35,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:35,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:35,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:35,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:35,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:35,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:35,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:35,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:35,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:35,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:35,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:35,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:35,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:35,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:35,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:35,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:35,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:35,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:35,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:35,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:35,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:35,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:35,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:35,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:35,396 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 01:10:35,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:35,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:35,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:35,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:35,412 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:35,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:35,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:35,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:35,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:35,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:35,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:35,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:35,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:35,414 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:35,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:35,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:35,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:35,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:35,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:35,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:35,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:35,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:35,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:35,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:35,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:35,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:35,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:35,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:35,417 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 01:10:35,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:35,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:35,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:35,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:35,740 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:35,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product20.cil.c [2019-10-15 01:10:35,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95083b0f8/b348f591fb5b487bb91a2c852e6eba36/FLAGe7ab5e315 [2019-10-15 01:10:36,494 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:36,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product20.cil.c [2019-10-15 01:10:36,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95083b0f8/b348f591fb5b487bb91a2c852e6eba36/FLAGe7ab5e315 [2019-10-15 01:10:36,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95083b0f8/b348f591fb5b487bb91a2c852e6eba36 [2019-10-15 01:10:36,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:36,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:36,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:36,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:36,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:36,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e90759a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36, skipping insertion in model container [2019-10-15 01:10:36,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,691 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:36,777 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:37,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:37,557 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:37,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:37,735 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:37,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37 WrapperNode [2019-10-15 01:10:37,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:37,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:37,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:37,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:37,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... [2019-10-15 01:10:37,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:37,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:37,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:37,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:37,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:10:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:10:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:10:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:10:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:10:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:38,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:38,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:38,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:38,049 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:38,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:38,051 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:38,051 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:38,051 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:38,051 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:38,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:38,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:10:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:10:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:10:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:10:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:10:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:40,537 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:40,537 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:40,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:40 BoogieIcfgContainer [2019-10-15 01:10:40,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:40,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:40,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:40,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:40,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:36" (1/3) ... [2019-10-15 01:10:40,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45358fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:40, skipping insertion in model container [2019-10-15 01:10:40,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:37" (2/3) ... [2019-10-15 01:10:40,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45358fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:40, skipping insertion in model container [2019-10-15 01:10:40,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:40" (3/3) ... [2019-10-15 01:10:40,549 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2019-10-15 01:10:40,561 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:40,572 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:40,587 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:40,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:40,620 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:40,621 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:40,621 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:40,621 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:40,621 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:40,621 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:40,621 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states. [2019-10-15 01:10:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:10:40,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:40,672 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:40,674 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash 728591762, now seen corresponding path program 1 times [2019-10-15 01:10:40,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:40,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938993002] [2019-10-15 01:10:40,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:40,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:40,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:41,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938993002] [2019-10-15 01:10:41,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:41,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:41,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136821734] [2019-10-15 01:10:41,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:41,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:41,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:41,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:41,480 INFO L87 Difference]: Start difference. First operand 809 states. Second operand 7 states. [2019-10-15 01:10:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:41,819 INFO L93 Difference]: Finished difference Result 1283 states and 2064 transitions. [2019-10-15 01:10:41,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:41,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-15 01:10:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:41,864 INFO L225 Difference]: With dead ends: 1283 [2019-10-15 01:10:41,864 INFO L226 Difference]: Without dead ends: 650 [2019-10-15 01:10:41,878 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 01:10:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-15 01:10:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2019-10-15 01:10:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-15 01:10:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1027 transitions. [2019-10-15 01:10:42,059 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1027 transitions. Word has length 93 [2019-10-15 01:10:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:42,060 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1027 transitions. [2019-10-15 01:10:42,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1027 transitions. [2019-10-15 01:10:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:42,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:42,079 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:42,079 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:42,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2105197679, now seen corresponding path program 1 times [2019-10-15 01:10:42,080 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:42,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942568510] [2019-10-15 01:10:42,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:42,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942568510] [2019-10-15 01:10:42,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:42,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:42,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513601955] [2019-10-15 01:10:42,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:42,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:42,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:42,320 INFO L87 Difference]: Start difference. First operand 648 states and 1027 transitions. Second operand 4 states. [2019-10-15 01:10:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:42,402 INFO L93 Difference]: Finished difference Result 1262 states and 2019 transitions. [2019-10-15 01:10:42,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:42,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:10:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:42,408 INFO L225 Difference]: With dead ends: 1262 [2019-10-15 01:10:42,409 INFO L226 Difference]: Without dead ends: 630 [2019-10-15 01:10:42,413 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 01:10:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-15 01:10:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-15 01:10:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-15 01:10:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 994 transitions. [2019-10-15 01:10:42,447 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 994 transitions. Word has length 94 [2019-10-15 01:10:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:42,447 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 994 transitions. [2019-10-15 01:10:42,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 994 transitions. [2019-10-15 01:10:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:42,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:42,451 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:42,451 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:42,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:42,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1592349723, now seen corresponding path program 1 times [2019-10-15 01:10:42,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:42,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235558595] [2019-10-15 01:10:42,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:42,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235558595] [2019-10-15 01:10:42,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:42,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:42,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125566258] [2019-10-15 01:10:42,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:42,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:42,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:42,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:42,738 INFO L87 Difference]: Start difference. First operand 630 states and 994 transitions. Second operand 7 states. [2019-10-15 01:10:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:42,888 INFO L93 Difference]: Finished difference Result 1231 states and 1961 transitions. [2019-10-15 01:10:42,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:42,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-15 01:10:42,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:42,895 INFO L225 Difference]: With dead ends: 1231 [2019-10-15 01:10:42,896 INFO L226 Difference]: Without dead ends: 624 [2019-10-15 01:10:42,899 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 01:10:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-15 01:10:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2019-10-15 01:10:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-10-15 01:10:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 981 transitions. [2019-10-15 01:10:42,938 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 981 transitions. Word has length 94 [2019-10-15 01:10:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:42,940 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 981 transitions. [2019-10-15 01:10:42,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 981 transitions. [2019-10-15 01:10:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:42,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:42,944 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:42,944 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash 444231126, now seen corresponding path program 1 times [2019-10-15 01:10:42,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:42,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166192566] [2019-10-15 01:10:42,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:43,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166192566] [2019-10-15 01:10:43,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:43,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:43,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721257196] [2019-10-15 01:10:43,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:43,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:43,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:43,149 INFO L87 Difference]: Start difference. First operand 624 states and 981 transitions. Second operand 7 states. [2019-10-15 01:10:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:43,249 INFO L93 Difference]: Finished difference Result 1219 states and 1935 transitions. [2019-10-15 01:10:43,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:43,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:10:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:43,259 INFO L225 Difference]: With dead ends: 1219 [2019-10-15 01:10:43,260 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:10:43,265 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 01:10:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:10:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:10:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:10:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 968 transitions. [2019-10-15 01:10:43,292 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 968 transitions. Word has length 95 [2019-10-15 01:10:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:43,292 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 968 transitions. [2019-10-15 01:10:43,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 968 transitions. [2019-10-15 01:10:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:43,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:43,295 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:43,295 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:43,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1352448671, now seen corresponding path program 1 times [2019-10-15 01:10:43,296 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:43,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964573650] [2019-10-15 01:10:43,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:43,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964573650] [2019-10-15 01:10:43,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:43,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:43,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772481816] [2019-10-15 01:10:43,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:43,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:43,503 INFO L87 Difference]: Start difference. First operand 618 states and 968 transitions. Second operand 7 states. [2019-10-15 01:10:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:43,650 INFO L93 Difference]: Finished difference Result 1207 states and 1909 transitions. [2019-10-15 01:10:43,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:43,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:10:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:43,669 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:10:43,669 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:10:43,675 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 01:10:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:10:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:10:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:10:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 955 transitions. [2019-10-15 01:10:43,848 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 955 transitions. Word has length 96 [2019-10-15 01:10:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:43,849 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 955 transitions. [2019-10-15 01:10:43,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 955 transitions. [2019-10-15 01:10:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:43,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:43,854 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:43,854 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:43,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1553576800, now seen corresponding path program 1 times [2019-10-15 01:10:43,856 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:43,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991177959] [2019-10-15 01:10:43,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,858 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:44,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991177959] [2019-10-15 01:10:44,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:44,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:44,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28431416] [2019-10-15 01:10:44,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:44,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:44,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:44,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:44,022 INFO L87 Difference]: Start difference. First operand 612 states and 955 transitions. Second operand 7 states. [2019-10-15 01:10:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:44,109 INFO L93 Difference]: Finished difference Result 1195 states and 1883 transitions. [2019-10-15 01:10:44,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:44,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:10:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:44,118 INFO L225 Difference]: With dead ends: 1195 [2019-10-15 01:10:44,118 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:10:44,122 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 01:10:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:10:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:10:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:10:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 954 transitions. [2019-10-15 01:10:44,146 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 954 transitions. Word has length 96 [2019-10-15 01:10:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:44,147 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 954 transitions. [2019-10-15 01:10:44,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 954 transitions. [2019-10-15 01:10:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:10:44,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,149 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:44,149 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1582577178, now seen corresponding path program 1 times [2019-10-15 01:10:44,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905500324] [2019-10-15 01:10:44,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:44,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905500324] [2019-10-15 01:10:44,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:44,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:44,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834154207] [2019-10-15 01:10:44,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:44,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:44,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:44,280 INFO L87 Difference]: Start difference. First operand 612 states and 954 transitions. Second operand 5 states. [2019-10-15 01:10:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:44,356 INFO L93 Difference]: Finished difference Result 1194 states and 1880 transitions. [2019-10-15 01:10:44,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:44,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 01:10:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:44,362 INFO L225 Difference]: With dead ends: 1194 [2019-10-15 01:10:44,362 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:10:44,366 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 01:10:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:10:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:10:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:10:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 953 transitions. [2019-10-15 01:10:44,390 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 953 transitions. Word has length 97 [2019-10-15 01:10:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:44,391 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 953 transitions. [2019-10-15 01:10:44,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 953 transitions. [2019-10-15 01:10:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:10:44,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,393 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:44,393 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1643629033, now seen corresponding path program 1 times [2019-10-15 01:10:44,394 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891352365] [2019-10-15 01:10:44,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:44,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891352365] [2019-10-15 01:10:44,518 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:44,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:44,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167465296] [2019-10-15 01:10:44,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:44,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:44,519 INFO L87 Difference]: Start difference. First operand 612 states and 953 transitions. Second operand 5 states. [2019-10-15 01:10:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:44,637 INFO L93 Difference]: Finished difference Result 1194 states and 1878 transitions. [2019-10-15 01:10:44,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:44,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-15 01:10:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:44,642 INFO L225 Difference]: With dead ends: 1194 [2019-10-15 01:10:44,642 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:10:44,646 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 01:10:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:10:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:10:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:10:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 952 transitions. [2019-10-15 01:10:44,670 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 952 transitions. Word has length 98 [2019-10-15 01:10:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:44,670 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 952 transitions. [2019-10-15 01:10:44,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 952 transitions. [2019-10-15 01:10:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:10:44,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,672 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:44,672 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,673 INFO L82 PathProgramCache]: Analyzing trace with hash -205792939, now seen corresponding path program 1 times [2019-10-15 01:10:44,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431261149] [2019-10-15 01:10:44,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:44,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431261149] [2019-10-15 01:10:44,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:44,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:44,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539103038] [2019-10-15 01:10:44,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:44,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:44,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:44,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:44,803 INFO L87 Difference]: Start difference. First operand 612 states and 952 transitions. Second operand 5 states. [2019-10-15 01:10:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:44,869 INFO L93 Difference]: Finished difference Result 1194 states and 1876 transitions. [2019-10-15 01:10:44,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:44,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-15 01:10:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:44,875 INFO L225 Difference]: With dead ends: 1194 [2019-10-15 01:10:44,875 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:10:44,878 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 01:10:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:10:44,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:10:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:10:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 951 transitions. [2019-10-15 01:10:44,900 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 951 transitions. Word has length 99 [2019-10-15 01:10:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:44,901 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 951 transitions. [2019-10-15 01:10:44,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 951 transitions. [2019-10-15 01:10:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:10:44,902 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,903 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:44,903 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1150361404, now seen corresponding path program 1 times [2019-10-15 01:10:44,904 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334153709] [2019-10-15 01:10:44,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:45,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334153709] [2019-10-15 01:10:45,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:45,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:45,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063880698] [2019-10-15 01:10:45,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:45,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:45,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:45,033 INFO L87 Difference]: Start difference. First operand 612 states and 951 transitions. Second operand 5 states. [2019-10-15 01:10:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:45,110 INFO L93 Difference]: Finished difference Result 1194 states and 1874 transitions. [2019-10-15 01:10:45,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:45,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 01:10:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:45,118 INFO L225 Difference]: With dead ends: 1194 [2019-10-15 01:10:45,118 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:10:45,123 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 01:10:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:10:45,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:10:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:10:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 950 transitions. [2019-10-15 01:10:45,151 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 950 transitions. Word has length 100 [2019-10-15 01:10:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:45,152 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 950 transitions. [2019-10-15 01:10:45,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 950 transitions. [2019-10-15 01:10:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:10:45,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:45,155 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:45,155 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:45,156 INFO L82 PathProgramCache]: Analyzing trace with hash 185725072, now seen corresponding path program 1 times [2019-10-15 01:10:45,156 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:45,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668854456] [2019-10-15 01:10:45,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:45,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668854456] [2019-10-15 01:10:45,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:45,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:10:45,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593608135] [2019-10-15 01:10:45,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:10:45,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:10:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:45,366 INFO L87 Difference]: Start difference. First operand 612 states and 950 transitions. Second operand 8 states. [2019-10-15 01:10:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:48,820 INFO L93 Difference]: Finished difference Result 2235 states and 3531 transitions. [2019-10-15 01:10:48,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:10:48,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-10-15 01:10:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:48,840 INFO L225 Difference]: With dead ends: 2235 [2019-10-15 01:10:48,840 INFO L226 Difference]: Without dead ends: 1657 [2019-10-15 01:10:48,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:10:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2019-10-15 01:10:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1645. [2019-10-15 01:10:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2019-10-15 01:10:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2558 transitions. [2019-10-15 01:10:48,967 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2558 transitions. Word has length 101 [2019-10-15 01:10:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:48,969 INFO L462 AbstractCegarLoop]: Abstraction has 1645 states and 2558 transitions. [2019-10-15 01:10:48,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:10:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2558 transitions. [2019-10-15 01:10:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:10:48,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,972 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:48,973 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,973 INFO L82 PathProgramCache]: Analyzing trace with hash 962074000, now seen corresponding path program 1 times [2019-10-15 01:10:48,974 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826791032] [2019-10-15 01:10:48,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:49,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826791032] [2019-10-15 01:10:49,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579636777] [2019-10-15 01:10:49,238 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 01:10:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:49,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:49,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:49,974 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:50,136 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:50,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:50,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967742665] [2019-10-15 01:10:50,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:50,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:50,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:50,139 INFO L87 Difference]: Start difference. First operand 1645 states and 2558 transitions. Second operand 3 states. [2019-10-15 01:10:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:50,332 INFO L93 Difference]: Finished difference Result 4748 states and 7510 transitions. [2019-10-15 01:10:50,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:50,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-15 01:10:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:50,376 INFO L225 Difference]: With dead ends: 4748 [2019-10-15 01:10:50,376 INFO L226 Difference]: Without dead ends: 3137 [2019-10-15 01:10:50,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2019-10-15 01:10:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 3031. [2019-10-15 01:10:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3031 states. [2019-10-15 01:10:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4766 transitions. [2019-10-15 01:10:50,623 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4766 transitions. Word has length 101 [2019-10-15 01:10:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:50,624 INFO L462 AbstractCegarLoop]: Abstraction has 3031 states and 4766 transitions. [2019-10-15 01:10:50,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4766 transitions. [2019-10-15 01:10:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:10:50,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:50,627 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:50,842 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:50,842 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1335385152, now seen corresponding path program 1 times [2019-10-15 01:10:50,843 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:50,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566855469] [2019-10-15 01:10:50,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:51,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566855469] [2019-10-15 01:10:51,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748454154] [2019-10-15 01:10:51,193 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 01:10:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:52,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:52,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:52,095 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:52,253 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:52,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:52,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102157192] [2019-10-15 01:10:52,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:52,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:52,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:52,257 INFO L87 Difference]: Start difference. First operand 3031 states and 4766 transitions. Second operand 3 states. [2019-10-15 01:10:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:52,554 INFO L93 Difference]: Finished difference Result 6656 states and 10537 transitions. [2019-10-15 01:10:52,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:52,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-15 01:10:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:52,597 INFO L225 Difference]: With dead ends: 6656 [2019-10-15 01:10:52,597 INFO L226 Difference]: Without dead ends: 3659 [2019-10-15 01:10:52,623 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2019-10-15 01:10:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3565. [2019-10-15 01:10:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3565 states. [2019-10-15 01:10:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5611 transitions. [2019-10-15 01:10:52,834 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 5611 transitions. Word has length 102 [2019-10-15 01:10:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:52,835 INFO L462 AbstractCegarLoop]: Abstraction has 3565 states and 5611 transitions. [2019-10-15 01:10:52,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:52,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 5611 transitions. [2019-10-15 01:10:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-15 01:10:52,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:52,836 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:53,045 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:53,046 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:53,046 INFO L82 PathProgramCache]: Analyzing trace with hash -128546951, now seen corresponding path program 1 times [2019-10-15 01:10:53,047 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:53,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268992088] [2019-10-15 01:10:53,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:53,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:53,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:53,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268992088] [2019-10-15 01:10:53,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:53,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:53,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838784815] [2019-10-15 01:10:53,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:53,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:53,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:53,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:53,227 INFO L87 Difference]: Start difference. First operand 3565 states and 5611 transitions. Second operand 7 states. [2019-10-15 01:10:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:56,242 INFO L93 Difference]: Finished difference Result 10571 states and 17005 transitions. [2019-10-15 01:10:56,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:56,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-15 01:10:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:56,307 INFO L225 Difference]: With dead ends: 10571 [2019-10-15 01:10:56,307 INFO L226 Difference]: Without dead ends: 7040 [2019-10-15 01:10:56,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:10:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2019-10-15 01:10:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 6952. [2019-10-15 01:10:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6952 states. [2019-10-15 01:10:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6952 states to 6952 states and 11073 transitions. [2019-10-15 01:10:56,679 INFO L78 Accepts]: Start accepts. Automaton has 6952 states and 11073 transitions. Word has length 104 [2019-10-15 01:10:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:56,680 INFO L462 AbstractCegarLoop]: Abstraction has 6952 states and 11073 transitions. [2019-10-15 01:10:56,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 6952 states and 11073 transitions. [2019-10-15 01:10:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:10:56,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:56,682 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:56,683 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash 422139196, now seen corresponding path program 1 times [2019-10-15 01:10:56,683 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:56,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601634968] [2019-10-15 01:10:56,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:56,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:56,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:56,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601634968] [2019-10-15 01:10:56,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:56,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:56,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140744566] [2019-10-15 01:10:56,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:56,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:56,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:56,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:56,831 INFO L87 Difference]: Start difference. First operand 6952 states and 11073 transitions. Second operand 4 states. [2019-10-15 01:10:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:57,139 INFO L93 Difference]: Finished difference Result 13862 states and 22283 transitions. [2019-10-15 01:10:57,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:57,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-15 01:10:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:57,221 INFO L225 Difference]: With dead ends: 13862 [2019-10-15 01:10:57,221 INFO L226 Difference]: Without dead ends: 6944 [2019-10-15 01:10:57,267 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 01:10:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2019-10-15 01:10:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6922. [2019-10-15 01:10:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6922 states. [2019-10-15 01:10:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6922 states to 6922 states and 10985 transitions. [2019-10-15 01:10:57,706 INFO L78 Accepts]: Start accepts. Automaton has 6922 states and 10985 transitions. Word has length 105 [2019-10-15 01:10:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:57,708 INFO L462 AbstractCegarLoop]: Abstraction has 6922 states and 10985 transitions. [2019-10-15 01:10:57,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6922 states and 10985 transitions. [2019-10-15 01:10:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:10:57,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:57,711 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] [2019-10-15 01:10:57,712 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:57,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:57,712 INFO L82 PathProgramCache]: Analyzing trace with hash 53496904, now seen corresponding path program 1 times [2019-10-15 01:10:57,712 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:57,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002610183] [2019-10-15 01:10:57,713 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:57,713 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:57,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:10:57,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002610183] [2019-10-15 01:10:57,901 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:57,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:57,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204632700] [2019-10-15 01:10:57,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:57,902 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:57,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:57,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:57,903 INFO L87 Difference]: Start difference. First operand 6922 states and 10985 transitions. Second operand 7 states. [2019-10-15 01:11:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:01,905 INFO L93 Difference]: Finished difference Result 20720 states and 33722 transitions. [2019-10-15 01:11:01,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:01,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 01:11:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:01,987 INFO L225 Difference]: With dead ends: 20720 [2019-10-15 01:11:01,988 INFO L226 Difference]: Without dead ends: 13832 [2019-10-15 01:11:02,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13832 states. [2019-10-15 01:11:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13832 to 13704. [2019-10-15 01:11:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13704 states. [2019-10-15 01:11:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13704 states to 13704 states and 22139 transitions. [2019-10-15 01:11:02,686 INFO L78 Accepts]: Start accepts. Automaton has 13704 states and 22139 transitions. Word has length 113 [2019-10-15 01:11:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:02,686 INFO L462 AbstractCegarLoop]: Abstraction has 13704 states and 22139 transitions. [2019-10-15 01:11:02,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13704 states and 22139 transitions. [2019-10-15 01:11:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 01:11:02,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:02,690 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] [2019-10-15 01:11:02,690 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:02,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1202684267, now seen corresponding path program 1 times [2019-10-15 01:11:02,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:02,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941567411] [2019-10-15 01:11:02,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:02,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:02,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:11:02,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941567411] [2019-10-15 01:11:02,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:02,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:02,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720202559] [2019-10-15 01:11:02,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:02,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:02,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:02,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:02,873 INFO L87 Difference]: Start difference. First operand 13704 states and 22139 transitions. Second operand 4 states. [2019-10-15 01:11:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:03,513 INFO L93 Difference]: Finished difference Result 27436 states and 44785 transitions. [2019-10-15 01:11:03,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:03,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-10-15 01:11:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:03,616 INFO L225 Difference]: With dead ends: 27436 [2019-10-15 01:11:03,617 INFO L226 Difference]: Without dead ends: 13760 [2019-10-15 01:11:03,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13760 states. [2019-10-15 01:11:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13760 to 13712. [2019-10-15 01:11:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13712 states. [2019-10-15 01:11:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13712 states to 13712 states and 22090 transitions. [2019-10-15 01:11:04,325 INFO L78 Accepts]: Start accepts. Automaton has 13712 states and 22090 transitions. Word has length 114 [2019-10-15 01:11:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:04,325 INFO L462 AbstractCegarLoop]: Abstraction has 13712 states and 22090 transitions. [2019-10-15 01:11:04,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13712 states and 22090 transitions. [2019-10-15 01:11:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 01:11:04,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:04,328 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:04,328 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:04,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1653596973, now seen corresponding path program 1 times [2019-10-15 01:11:04,329 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:04,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649877092] [2019-10-15 01:11:04,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:04,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:04,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:11:04,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649877092] [2019-10-15 01:11:04,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989494781] [2019-10-15 01:11:04,551 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 01:11:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:05,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 3305 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:11:05,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:11:05,560 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:05,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:11:06,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:11:06,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-15 01:11:06,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083862076] [2019-10-15 01:11:06,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:11:06,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:11:06,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:11:06,026 INFO L87 Difference]: Start difference. First operand 13712 states and 22090 transitions. Second operand 9 states.