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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:08:40,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:40,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:40,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:40,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:40,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:40,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:40,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:40,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:40,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:40,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:40,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:40,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:40,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:40,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:40,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:40,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:40,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:40,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:40,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:40,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:40,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:40,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:40,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:40,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:40,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:40,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:40,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:40,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:40,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:40,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:40,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:40,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:40,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:40,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:40,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:40,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:40,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:40,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:40,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:40,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:40,620 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 03:08:40,646 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:40,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:40,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:40,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:40,648 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:40,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:40,648 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:40,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:40,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:40,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:40,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:40,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:40,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:40,649 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:40,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:40,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:40,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:40,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:40,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:40,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:40,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:40,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:40,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:40,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:40,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:40,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:40,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:40,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:40,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:08:40,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:41,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:41,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:41,006 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:41,007 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:41,007 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c [2019-10-15 03:08:41,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff00f40b/c49a6288b2ae43319297b3ec883e9b1c/FLAG99b05f281 [2019-10-15 03:08:41,881 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:41,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c [2019-10-15 03:08:41,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff00f40b/c49a6288b2ae43319297b3ec883e9b1c/FLAG99b05f281 [2019-10-15 03:08:42,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff00f40b/c49a6288b2ae43319297b3ec883e9b1c [2019-10-15 03:08:42,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:42,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:42,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:42,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:42,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:42,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7189696a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42, skipping insertion in model container [2019-10-15 03:08:42,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:42,197 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:42,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:43,021 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:43,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:43,285 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:43,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43 WrapperNode [2019-10-15 03:08:43,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:43,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:43,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:43,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:43,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (1/1) ... [2019-10-15 03:08:43,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:43,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:43,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:43,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:43,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (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 03:08:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:43,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:43,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:43,606 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:43,606 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:43,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:08:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:08:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:43,611 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-10-15 03:08:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-15 03:08:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:08:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:08:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:43,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:08:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:08:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:08:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:08:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-10-15 03:08:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-15 03:08:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:49,880 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:49,880 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:49,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:49 BoogieIcfgContainer [2019-10-15 03:08:49,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:49,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:49,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:49,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:49,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:42" (1/3) ... [2019-10-15 03:08:49,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d90bea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:49, skipping insertion in model container [2019-10-15 03:08:49,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:43" (2/3) ... [2019-10-15 03:08:49,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d90bea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:49, skipping insertion in model container [2019-10-15 03:08:49,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:49" (3/3) ... [2019-10-15 03:08:49,890 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2019-10-15 03:08:49,901 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:49,911 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:49,929 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:49,973 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:49,974 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:49,974 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:49,974 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:49,974 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:49,974 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:49,974 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:49,975 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states. [2019-10-15 03:08:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:50,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:50,033 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:50,035 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:50,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2099438583, now seen corresponding path program 1 times [2019-10-15 03:08:50,052 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:50,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972520016] [2019-10-15 03:08:50,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:50,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:50,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:51,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972520016] [2019-10-15 03:08:51,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687237181] [2019-10-15 03:08:51,076 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 03:08:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:51,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:08:51,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:51,793 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:52,221 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:08:52,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:08:52,222 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505781941] [2019-10-15 03:08:52,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:08:52,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:52,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:08:52,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:52,246 INFO L87 Difference]: Start difference. First operand 581 states. Second operand 3 states. [2019-10-15 03:08:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:52,507 INFO L93 Difference]: Finished difference Result 1265 states and 1950 transitions. [2019-10-15 03:08:52,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:08:52,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:08:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:52,540 INFO L225 Difference]: With dead ends: 1265 [2019-10-15 03:08:52,540 INFO L226 Difference]: Without dead ends: 816 [2019-10-15 03:08:52,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:52,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2019-10-15 03:08:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 803. [2019-10-15 03:08:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-15 03:08:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1222 transitions. [2019-10-15 03:08:52,732 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1222 transitions. Word has length 118 [2019-10-15 03:08:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:52,734 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1222 transitions. [2019-10-15 03:08:52,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:08:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1222 transitions. [2019-10-15 03:08:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:52,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:52,758 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:52,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:52,975 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1494326674, now seen corresponding path program 1 times [2019-10-15 03:08:52,976 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:52,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457130915] [2019-10-15 03:08:52,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:52,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:52,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:53,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457130915] [2019-10-15 03:08:53,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:53,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:53,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443471653] [2019-10-15 03:08:53,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:53,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:53,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:53,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:53,281 INFO L87 Difference]: Start difference. First operand 803 states and 1222 transitions. Second operand 7 states. [2019-10-15 03:08:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:57,692 INFO L93 Difference]: Finished difference Result 3066 states and 4800 transitions. [2019-10-15 03:08:57,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:08:57,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-15 03:08:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:57,727 INFO L225 Difference]: With dead ends: 3066 [2019-10-15 03:08:57,727 INFO L226 Difference]: Without dead ends: 2294 [2019-10-15 03:08:57,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:08:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2019-10-15 03:08:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2219. [2019-10-15 03:08:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2019-10-15 03:08:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3464 transitions. [2019-10-15 03:08:57,947 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3464 transitions. Word has length 119 [2019-10-15 03:08:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:57,951 INFO L462 AbstractCegarLoop]: Abstraction has 2219 states and 3464 transitions. [2019-10-15 03:08:57,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3464 transitions. [2019-10-15 03:08:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:08:57,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:57,964 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:57,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:57,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash 746786505, now seen corresponding path program 1 times [2019-10-15 03:08:57,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:57,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394086575] [2019-10-15 03:08:57,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:58,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394086575] [2019-10-15 03:08:58,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199019165] [2019-10-15 03:08:58,363 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 03:08:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:58,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:08:59,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:08:59,137 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:59,400 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:08:59,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:08:59,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252618822] [2019-10-15 03:08:59,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:59,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:59,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:59,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:08:59,403 INFO L87 Difference]: Start difference. First operand 2219 states and 3464 transitions. Second operand 4 states. [2019-10-15 03:08:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:59,578 INFO L93 Difference]: Finished difference Result 4254 states and 6711 transitions. [2019-10-15 03:08:59,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:08:59,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-15 03:08:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:59,596 INFO L225 Difference]: With dead ends: 4254 [2019-10-15 03:08:59,596 INFO L226 Difference]: Without dead ends: 2066 [2019-10-15 03:08:59,612 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:08:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2019-10-15 03:08:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2016. [2019-10-15 03:08:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2016 states. [2019-10-15 03:08:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3115 transitions. [2019-10-15 03:08:59,716 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3115 transitions. Word has length 121 [2019-10-15 03:08:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:59,716 INFO L462 AbstractCegarLoop]: Abstraction has 2016 states and 3115 transitions. [2019-10-15 03:08:59,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3115 transitions. [2019-10-15 03:08:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:59,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:59,721 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:59,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:59,931 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1903198849, now seen corresponding path program 1 times [2019-10-15 03:08:59,931 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:59,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100637615] [2019-10-15 03:08:59,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:59,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:59,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:00,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100637615] [2019-10-15 03:09:00,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045177850] [2019-10-15 03:09:00,263 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 03:09:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:00,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:00,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:00,953 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:01,174 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:01,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:01,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042665271] [2019-10-15 03:09:01,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:01,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:01,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:01,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:01,177 INFO L87 Difference]: Start difference. First operand 2016 states and 3115 transitions. Second operand 3 states. [2019-10-15 03:09:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:01,355 INFO L93 Difference]: Finished difference Result 5044 states and 7944 transitions. [2019-10-15 03:09:01,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:01,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:09:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:01,383 INFO L225 Difference]: With dead ends: 5044 [2019-10-15 03:09:01,384 INFO L226 Difference]: Without dead ends: 3059 [2019-10-15 03:09:01,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2019-10-15 03:09:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2974. [2019-10-15 03:09:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2974 states. [2019-10-15 03:09:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4625 transitions. [2019-10-15 03:09:01,547 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4625 transitions. Word has length 119 [2019-10-15 03:09:01,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:01,548 INFO L462 AbstractCegarLoop]: Abstraction has 2974 states and 4625 transitions. [2019-10-15 03:09:01,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4625 transitions. [2019-10-15 03:09:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:01,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:01,554 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:01,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:01,772 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:01,773 INFO L82 PathProgramCache]: Analyzing trace with hash -104889300, now seen corresponding path program 1 times [2019-10-15 03:09:01,773 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:01,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257732639] [2019-10-15 03:09:01,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:01,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:01,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:02,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257732639] [2019-10-15 03:09:02,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747638669] [2019-10-15 03:09:02,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:02,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:09:02,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:02,885 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:03,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:03,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:03,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:09:03,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306515598] [2019-10-15 03:09:03,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:09:03,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:03,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:09:03,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:03,379 INFO L87 Difference]: Start difference. First operand 2974 states and 4625 transitions. Second operand 6 states. [2019-10-15 03:09:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:05,055 INFO L93 Difference]: Finished difference Result 7797 states and 12341 transitions. [2019-10-15 03:09:05,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:09:05,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 03:09:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:05,096 INFO L225 Difference]: With dead ends: 7797 [2019-10-15 03:09:05,096 INFO L226 Difference]: Without dead ends: 4854 [2019-10-15 03:09:05,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2019-10-15 03:09:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 4818. [2019-10-15 03:09:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2019-10-15 03:09:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7367 transitions. [2019-10-15 03:09:05,398 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7367 transitions. Word has length 120 [2019-10-15 03:09:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:05,398 INFO L462 AbstractCegarLoop]: Abstraction has 4818 states and 7367 transitions. [2019-10-15 03:09:05,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:09:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7367 transitions. [2019-10-15 03:09:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:09:05,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:05,402 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:05,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:05,617 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:05,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1646523800, now seen corresponding path program 1 times [2019-10-15 03:09:05,617 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:05,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659201289] [2019-10-15 03:09:05,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:05,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:05,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:09:05,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659201289] [2019-10-15 03:09:05,921 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:05,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:05,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866157030] [2019-10-15 03:09:05,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:05,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:05,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:05,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:05,923 INFO L87 Difference]: Start difference. First operand 4818 states and 7367 transitions. Second operand 10 states. [2019-10-15 03:09:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:10,532 INFO L93 Difference]: Finished difference Result 17022 states and 26706 transitions. [2019-10-15 03:09:10,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:09:10,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-15 03:09:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:10,634 INFO L225 Difference]: With dead ends: 17022 [2019-10-15 03:09:10,634 INFO L226 Difference]: Without dead ends: 12235 [2019-10-15 03:09:10,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:09:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2019-10-15 03:09:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12080. [2019-10-15 03:09:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12080 states. [2019-10-15 03:09:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 18752 transitions. [2019-10-15 03:09:11,295 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 18752 transitions. Word has length 125 [2019-10-15 03:09:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:11,296 INFO L462 AbstractCegarLoop]: Abstraction has 12080 states and 18752 transitions. [2019-10-15 03:09:11,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 18752 transitions. [2019-10-15 03:09:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:09:11,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:11,301 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:11,301 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:11,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1902884276, now seen corresponding path program 1 times [2019-10-15 03:09:11,302 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:11,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894095588] [2019-10-15 03:09:11,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:11,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:11,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:11,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894095588] [2019-10-15 03:09:11,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024243402] [2019-10-15 03:09:11,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:12,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:09:12,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:09:12,582 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:12,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:12,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-15 03:09:12,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643973000] [2019-10-15 03:09:12,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:12,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:12,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:09:12,963 INFO L87 Difference]: Start difference. First operand 12080 states and 18752 transitions. Second operand 7 states. [2019-10-15 03:09:16,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:16,133 INFO L93 Difference]: Finished difference Result 25422 states and 39436 transitions. [2019-10-15 03:09:16,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:09:16,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 03:09:16,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:16,242 INFO L225 Difference]: With dead ends: 25422 [2019-10-15 03:09:16,242 INFO L226 Difference]: Without dead ends: 13373 [2019-10-15 03:09:16,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:09:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states.