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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:20,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:20,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:20,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:20,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:20,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:20,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:20,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:20,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:20,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:20,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:20,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:20,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:20,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:20,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:20,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:20,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:20,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:20,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:20,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:20,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:20,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:20,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:20,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:20,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:20,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:20,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:20,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:20,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:20,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:20,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:20,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:20,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:20,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:20,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:20,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:20,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:20,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:20,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:20,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:20,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:20,412 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 03:09:20,437 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:20,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:20,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:20,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:20,442 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:20,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:20,443 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:20,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:20,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:20,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:20,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:20,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:20,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:20,446 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:20,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:20,446 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:20,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:20,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:20,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:20,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:20,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:20,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:20,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:20,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:20,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:20,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:20,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:20,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:20,449 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 03:09:20,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:20,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:20,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:20,856 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:20,857 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:20,859 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-15 03:09:20,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920dd9829/d8d95a5d093b4ea4a300785383e69050/FLAG9a15dc578 [2019-10-15 03:09:21,816 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:21,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-15 03:09:21,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920dd9829/d8d95a5d093b4ea4a300785383e69050/FLAG9a15dc578 [2019-10-15 03:09:21,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920dd9829/d8d95a5d093b4ea4a300785383e69050 [2019-10-15 03:09:21,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:21,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:21,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:21,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:21,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:21,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:21" (1/1) ... [2019-10-15 03:09:21,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4668097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:21, skipping insertion in model container [2019-10-15 03:09:21,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:21" (1/1) ... [2019-10-15 03:09:22,002 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:22,092 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:22,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:23,013 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:23,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:23,263 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:23,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23 WrapperNode [2019-10-15 03:09:23,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:23,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:23,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:23,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:23,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:23,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:23,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:23,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:23,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (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 03:09:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:09:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:09:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:23,653 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:23,653 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:23,654 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:23,654 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:23,654 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:23,654 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:09:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:09:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:31,091 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:31,091 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:31,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:31 BoogieIcfgContainer [2019-10-15 03:09:31,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:31,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:31,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:31,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:31,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:21" (1/3) ... [2019-10-15 03:09:31,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3487dcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:31, skipping insertion in model container [2019-10-15 03:09:31,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (2/3) ... [2019-10-15 03:09:31,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3487dcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:31, skipping insertion in model container [2019-10-15 03:09:31,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:31" (3/3) ... [2019-10-15 03:09:31,103 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-10-15 03:09:31,115 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:31,128 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:31,145 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:31,198 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:31,198 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:31,199 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:31,199 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:31,199 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:31,199 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:31,200 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:31,200 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states. [2019-10-15 03:09:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:09:31,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:31,284 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:31,287 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:31,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:31,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1324391613, now seen corresponding path program 1 times [2019-10-15 03:09:31,317 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:31,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452579555] [2019-10-15 03:09:31,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,318 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:32,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452579555] [2019-10-15 03:09:32,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644916846] [2019-10-15 03:09:32,498 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 03:09:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:33,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:33,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:33,277 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:33,470 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:33,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:33,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198919755] [2019-10-15 03:09:33,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:33,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:33,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:33,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:33,498 INFO L87 Difference]: Start difference. First operand 617 states. Second operand 3 states. [2019-10-15 03:09:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:33,726 INFO L93 Difference]: Finished difference Result 1355 states and 2052 transitions. [2019-10-15 03:09:33,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:33,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-10-15 03:09:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:33,764 INFO L225 Difference]: With dead ends: 1355 [2019-10-15 03:09:33,765 INFO L226 Difference]: Without dead ends: 876 [2019-10-15 03:09:33,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-10-15 03:09:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 863. [2019-10-15 03:09:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-10-15 03:09:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1290 transitions. [2019-10-15 03:09:33,978 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1290 transitions. Word has length 80 [2019-10-15 03:09:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,979 INFO L462 AbstractCegarLoop]: Abstraction has 863 states and 1290 transitions. [2019-10-15 03:09:33,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1290 transitions. [2019-10-15 03:09:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:33,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,985 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:34,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:34,196 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1390861368, now seen corresponding path program 1 times [2019-10-15 03:09:34,197 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:34,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140877210] [2019-10-15 03:09:34,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:34,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:34,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:34,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140877210] [2019-10-15 03:09:34,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:34,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:09:34,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539971126] [2019-10-15 03:09:34,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:34,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:34,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:34,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:34,650 INFO L87 Difference]: Start difference. First operand 863 states and 1290 transitions. Second operand 3 states. [2019-10-15 03:09:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:34,956 INFO L93 Difference]: Finished difference Result 2513 states and 3820 transitions. [2019-10-15 03:09:34,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:34,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:09:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:34,978 INFO L225 Difference]: With dead ends: 2513 [2019-10-15 03:09:34,978 INFO L226 Difference]: Without dead ends: 1681 [2019-10-15 03:09:34,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2019-10-15 03:09:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1576. [2019-10-15 03:09:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2019-10-15 03:09:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2410 transitions. [2019-10-15 03:09:35,238 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2410 transitions. Word has length 81 [2019-10-15 03:09:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:35,242 INFO L462 AbstractCegarLoop]: Abstraction has 1576 states and 2410 transitions. [2019-10-15 03:09:35,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2410 transitions. [2019-10-15 03:09:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:09:35,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:35,266 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:35,266 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:35,267 INFO L82 PathProgramCache]: Analyzing trace with hash -607992935, now seen corresponding path program 1 times [2019-10-15 03:09:35,268 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:35,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521882521] [2019-10-15 03:09:35,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:35,818 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 03:09:35,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521882521] [2019-10-15 03:09:35,818 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:35,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:35,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384506582] [2019-10-15 03:09:35,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:35,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:35,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:35,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:35,822 INFO L87 Difference]: Start difference. First operand 1576 states and 2410 transitions. Second operand 10 states. [2019-10-15 03:09:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:38,663 INFO L93 Difference]: Finished difference Result 3683 states and 5633 transitions. [2019-10-15 03:09:38,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:09:38,664 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2019-10-15 03:09:38,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:38,679 INFO L225 Difference]: With dead ends: 3683 [2019-10-15 03:09:38,680 INFO L226 Difference]: Without dead ends: 2138 [2019-10-15 03:09:38,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:09:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2019-10-15 03:09:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2109. [2019-10-15 03:09:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2019-10-15 03:09:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 3195 transitions. [2019-10-15 03:09:38,855 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 3195 transitions. Word has length 128 [2019-10-15 03:09:38,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:38,856 INFO L462 AbstractCegarLoop]: Abstraction has 2109 states and 3195 transitions. [2019-10-15 03:09:38,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 3195 transitions. [2019-10-15 03:09:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 03:09:38,863 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:38,863 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:38,864 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1384021838, now seen corresponding path program 1 times [2019-10-15 03:09:38,865 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:38,865 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479658987] [2019-10-15 03:09:38,865 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:39,357 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 03:09:39,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479658987] [2019-10-15 03:09:39,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:39,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:39,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525138058] [2019-10-15 03:09:39,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:39,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:39,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:39,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:39,359 INFO L87 Difference]: Start difference. First operand 2109 states and 3195 transitions. Second operand 7 states. [2019-10-15 03:09:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:44,587 INFO L93 Difference]: Finished difference Result 6282 states and 9904 transitions. [2019-10-15 03:09:44,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:44,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-10-15 03:09:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:44,620 INFO L225 Difference]: With dead ends: 6282 [2019-10-15 03:09:44,621 INFO L226 Difference]: Without dead ends: 4204 [2019-10-15 03:09:44,633 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 03:09:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2019-10-15 03:09:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 4112. [2019-10-15 03:09:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4112 states. [2019-10-15 03:09:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 6343 transitions. [2019-10-15 03:09:44,855 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 6343 transitions. Word has length 129 [2019-10-15 03:09:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:44,855 INFO L462 AbstractCegarLoop]: Abstraction has 4112 states and 6343 transitions. [2019-10-15 03:09:44,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 6343 transitions. [2019-10-15 03:09:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:09:44,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:44,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:44,862 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:44,862 INFO L82 PathProgramCache]: Analyzing trace with hash -486245671, now seen corresponding path program 1 times [2019-10-15 03:09:44,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:44,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639640065] [2019-10-15 03:09:44,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:44,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:44,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:45,192 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 03:09:45,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639640065] [2019-10-15 03:09:45,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668169698] [2019-10-15 03:09:45,194 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 03:09:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:46,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:46,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:46,117 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 03:09:46,117 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:46,336 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 03:09:46,337 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:46,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:09:46,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596234347] [2019-10-15 03:09:46,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:46,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:46,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:46,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:46,341 INFO L87 Difference]: Start difference. First operand 4112 states and 6343 transitions. Second operand 4 states. [2019-10-15 03:09:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:46,744 INFO L93 Difference]: Finished difference Result 8081 states and 12821 transitions. [2019-10-15 03:09:46,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:46,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2019-10-15 03:09:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:46,783 INFO L225 Difference]: With dead ends: 8081 [2019-10-15 03:09:46,783 INFO L226 Difference]: Without dead ends: 4000 [2019-10-15 03:09:46,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2019-10-15 03:09:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3862. [2019-10-15 03:09:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3862 states. [2019-10-15 03:09:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5908 transitions. [2019-10-15 03:09:47,217 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5908 transitions. Word has length 131 [2019-10-15 03:09:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:47,218 INFO L462 AbstractCegarLoop]: Abstraction has 3862 states and 5908 transitions. [2019-10-15 03:09:47,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5908 transitions. [2019-10-15 03:09:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 03:09:47,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:47,226 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:47,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:47,441 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1685858294, now seen corresponding path program 1 times [2019-10-15 03:09:47,443 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:47,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000616445] [2019-10-15 03:09:47,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:47,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:47,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:47,776 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 03:09:47,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000616445] [2019-10-15 03:09:47,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652372516] [2019-10-15 03:09:47,776 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 03:09:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:48,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 3277 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:48,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:48,413 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 03:09:48,414 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:48,716 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 03:09:48,717 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:48,717 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:48,717 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719563895] [2019-10-15 03:09:48,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:48,718 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:48,719 INFO L87 Difference]: Start difference. First operand 3862 states and 5908 transitions. Second operand 3 states. [2019-10-15 03:09:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:49,157 INFO L93 Difference]: Finished difference Result 9617 states and 15408 transitions. [2019-10-15 03:09:49,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:49,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-10-15 03:09:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:49,213 INFO L225 Difference]: With dead ends: 9617 [2019-10-15 03:09:49,213 INFO L226 Difference]: Without dead ends: 5786 [2019-10-15 03:09:49,240 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 260 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 03:09:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2019-10-15 03:09:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5565. [2019-10-15 03:09:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5565 states. [2019-10-15 03:09:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 8518 transitions. [2019-10-15 03:09:49,571 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 8518 transitions. Word has length 129 [2019-10-15 03:09:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:49,572 INFO L462 AbstractCegarLoop]: Abstraction has 5565 states and 8518 transitions. [2019-10-15 03:09:49,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 8518 transitions. [2019-10-15 03:09:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 03:09:49,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:49,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:49,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:49,787 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -74748577, now seen corresponding path program 1 times [2019-10-15 03:09:49,788 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:49,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041803908] [2019-10-15 03:09:49,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:49,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:49,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:50,107 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 03:09:50,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041803908] [2019-10-15 03:09:50,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432699271] [2019-10-15 03:09:50,108 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 03:09:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:50,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:09:50,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:51,182 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 03:09:51,182 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:51,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:51,680 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 03:09:51,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:51,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:09:51,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518906696] [2019-10-15 03:09:51,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:09:51,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:09:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:51,683 INFO L87 Difference]: Start difference. First operand 5565 states and 8518 transitions. Second operand 6 states. [2019-10-15 03:09:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:54,316 INFO L93 Difference]: Finished difference Result 13985 states and 21821 transitions. [2019-10-15 03:09:54,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:09:54,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-15 03:09:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:54,380 INFO L225 Difference]: With dead ends: 13985 [2019-10-15 03:09:54,380 INFO L226 Difference]: Without dead ends: 8451 [2019-10-15 03:09:54,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 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 03:09:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2019-10-15 03:09:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 8409. [2019-10-15 03:09:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8409 states. [2019-10-15 03:09:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 12608 transitions. [2019-10-15 03:09:54,978 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 12608 transitions. Word has length 130 [2019-10-15 03:09:54,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:54,979 INFO L462 AbstractCegarLoop]: Abstraction has 8409 states and 12608 transitions. [2019-10-15 03:09:54,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:09:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 12608 transitions. [2019-10-15 03:09:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:09:54,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:54,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:55,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:55,202 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:55,203 INFO L82 PathProgramCache]: Analyzing trace with hash 399590605, now seen corresponding path program 1 times [2019-10-15 03:09:55,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:55,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723260072] [2019-10-15 03:09:55,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:55,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:55,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:55,591 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 03:09:55,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723260072] [2019-10-15 03:09:55,592 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:55,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:55,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013424514] [2019-10-15 03:09:55,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:55,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:55,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:55,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:55,594 INFO L87 Difference]: Start difference. First operand 8409 states and 12608 transitions. Second operand 10 states.