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_spec1_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:07,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:07,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:07,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:07,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:07,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:07,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:07,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:07,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:07,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:07,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:07,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:07,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:07,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:07,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:07,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:07,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:08,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:08,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:08,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:08,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:08,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:08,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:08,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:08,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:08,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:08,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:08,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:08,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:08,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:08,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:08,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:08,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:08,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:08,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:08,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:08,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:08,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:08,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:08,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:08,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:08,054 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 03:07:08,080 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:08,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:08,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:08,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:08,084 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:08,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:08,085 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:08,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:08,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:08,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:08,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:08,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:08,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:08,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:08,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:08,088 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:08,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:08,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:08,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:08,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:08,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:08,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:08,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:08,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:08,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:08,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:08,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:08,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:08,092 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 03:07:08,604 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:08,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:08,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:08,639 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:08,639 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:08,640 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product21.cil.c [2019-10-15 03:07:08,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2f8975/b09e3fbb25cb438cb462fa6bec4aaf4d/FLAG047210bd2 [2019-10-15 03:07:09,517 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:09,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product21.cil.c [2019-10-15 03:07:09,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2f8975/b09e3fbb25cb438cb462fa6bec4aaf4d/FLAG047210bd2 [2019-10-15 03:07:09,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2f8975/b09e3fbb25cb438cb462fa6bec4aaf4d [2019-10-15 03:07:09,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:09,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:09,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:09,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:09,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:09,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09, skipping insertion in model container [2019-10-15 03:07:09,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,657 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:09,754 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:10,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:10,782 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:10,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:11,058 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:11,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11 WrapperNode [2019-10-15 03:07:11,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:11,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:11,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:11,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:11,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:11,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:11,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:11,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:11,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (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 03:07:11,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:07:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:07:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:07:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:07:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:18,042 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:18,042 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:18,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:18 BoogieIcfgContainer [2019-10-15 03:07:18,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:18,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:18,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:18,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:18,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:09" (1/3) ... [2019-10-15 03:07:18,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6b3a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:18, skipping insertion in model container [2019-10-15 03:07:18,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11" (2/3) ... [2019-10-15 03:07:18,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6b3a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:18, skipping insertion in model container [2019-10-15 03:07:18,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:18" (3/3) ... [2019-10-15 03:07:18,053 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2019-10-15 03:07:18,064 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:18,075 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:18,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:18,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:18,120 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:18,120 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:18,120 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:18,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:18,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:18,121 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:18,121 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states. [2019-10-15 03:07:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 03:07:18,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:18,183 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:18,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:18,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1489499019, now seen corresponding path program 1 times [2019-10-15 03:07:18,205 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:18,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590153968] [2019-10-15 03:07:18,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:18,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:18,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:19,069 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 03:07:19,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590153968] [2019-10-15 03:07:19,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:19,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:07:19,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329423010] [2019-10-15 03:07:19,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:07:19,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:19,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:07:19,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:19,099 INFO L87 Difference]: Start difference. First operand 568 states. Second operand 2 states. [2019-10-15 03:07:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:19,181 INFO L93 Difference]: Finished difference Result 477 states and 709 transitions. [2019-10-15 03:07:19,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:07:19,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 129 [2019-10-15 03:07:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:19,209 INFO L225 Difference]: With dead ends: 477 [2019-10-15 03:07:19,209 INFO L226 Difference]: Without dead ends: 443 [2019-10-15 03:07:19,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-10-15 03:07:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2019-10-15 03:07:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-15 03:07:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 658 transitions. [2019-10-15 03:07:19,359 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 658 transitions. Word has length 129 [2019-10-15 03:07:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:19,362 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 658 transitions. [2019-10-15 03:07:19,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:07:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 658 transitions. [2019-10-15 03:07:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 03:07:19,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:19,372 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:19,372 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash -879383074, now seen corresponding path program 1 times [2019-10-15 03:07:19,373 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:19,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992251366] [2019-10-15 03:07:19,373 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:19,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:19,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:19,999 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 03:07:19,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992251366] [2019-10-15 03:07:20,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:20,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:20,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360143012] [2019-10-15 03:07:20,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:20,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:20,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:20,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:20,007 INFO L87 Difference]: Start difference. First operand 443 states and 658 transitions. Second operand 9 states. [2019-10-15 03:07:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:27,189 INFO L93 Difference]: Finished difference Result 1368 states and 2097 transitions. [2019-10-15 03:07:27,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 03:07:27,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2019-10-15 03:07:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:27,203 INFO L225 Difference]: With dead ends: 1368 [2019-10-15 03:07:27,203 INFO L226 Difference]: Without dead ends: 978 [2019-10-15 03:07:27,210 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-15 03:07:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2019-10-15 03:07:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 946. [2019-10-15 03:07:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2019-10-15 03:07:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1451 transitions. [2019-10-15 03:07:27,354 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1451 transitions. Word has length 130 [2019-10-15 03:07:27,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:27,355 INFO L462 AbstractCegarLoop]: Abstraction has 946 states and 1451 transitions. [2019-10-15 03:07:27,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1451 transitions. [2019-10-15 03:07:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:07:27,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:27,366 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:27,367 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:27,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:27,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1221597036, now seen corresponding path program 1 times [2019-10-15 03:07:27,369 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:27,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105530406] [2019-10-15 03:07:27,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:27,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:27,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:27,656 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 03:07:27,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105530406] [2019-10-15 03:07:27,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:27,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:27,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732447419] [2019-10-15 03:07:27,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:27,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:27,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:27,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:27,661 INFO L87 Difference]: Start difference. First operand 946 states and 1451 transitions. Second operand 7 states. [2019-10-15 03:07:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:27,855 INFO L93 Difference]: Finished difference Result 1508 states and 2329 transitions. [2019-10-15 03:07:27,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:27,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-15 03:07:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:27,866 INFO L225 Difference]: With dead ends: 1508 [2019-10-15 03:07:27,867 INFO L226 Difference]: Without dead ends: 983 [2019-10-15 03:07:27,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2019-10-15 03:07:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 967. [2019-10-15 03:07:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-15 03:07:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1481 transitions. [2019-10-15 03:07:27,979 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1481 transitions. Word has length 135 [2019-10-15 03:07:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:27,980 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1481 transitions. [2019-10-15 03:07:27,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1481 transitions. [2019-10-15 03:07:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 03:07:27,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:27,986 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:27,986 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:27,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1927403097, now seen corresponding path program 1 times [2019-10-15 03:07:27,987 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:27,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100280259] [2019-10-15 03:07:27,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:27,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:27,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:28,440 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 03:07:28,441 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100280259] [2019-10-15 03:07:28,441 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:28,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:28,442 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245825642] [2019-10-15 03:07:28,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:28,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:28,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:28,444 INFO L87 Difference]: Start difference. First operand 967 states and 1481 transitions. Second operand 7 states. [2019-10-15 03:07:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:28,567 INFO L93 Difference]: Finished difference Result 1537 states and 2367 transitions. [2019-10-15 03:07:28,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:28,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-15 03:07:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:28,577 INFO L225 Difference]: With dead ends: 1537 [2019-10-15 03:07:28,577 INFO L226 Difference]: Without dead ends: 998 [2019-10-15 03:07:28,582 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2019-10-15 03:07:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 970. [2019-10-15 03:07:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-15 03:07:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1484 transitions. [2019-10-15 03:07:28,663 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1484 transitions. Word has length 134 [2019-10-15 03:07:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:28,665 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1484 transitions. [2019-10-15 03:07:28,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1484 transitions. [2019-10-15 03:07:28,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:07:28,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:28,673 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:28,673 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:28,674 INFO L82 PathProgramCache]: Analyzing trace with hash -245024436, now seen corresponding path program 1 times [2019-10-15 03:07:28,674 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:28,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887694516] [2019-10-15 03:07:28,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:28,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:28,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:28,934 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 03:07:28,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887694516] [2019-10-15 03:07:28,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:28,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:28,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509514141] [2019-10-15 03:07:28,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:28,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:28,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:28,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:28,938 INFO L87 Difference]: Start difference. First operand 970 states and 1484 transitions. Second operand 7 states. [2019-10-15 03:07:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:29,050 INFO L93 Difference]: Finished difference Result 1542 states and 2372 transitions. [2019-10-15 03:07:29,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:29,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-15 03:07:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:29,059 INFO L225 Difference]: With dead ends: 1542 [2019-10-15 03:07:29,060 INFO L226 Difference]: Without dead ends: 1001 [2019-10-15 03:07:29,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-15 03:07:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 973. [2019-10-15 03:07:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2019-10-15 03:07:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1487 transitions. [2019-10-15 03:07:29,139 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1487 transitions. Word has length 135 [2019-10-15 03:07:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:29,140 INFO L462 AbstractCegarLoop]: Abstraction has 973 states and 1487 transitions. [2019-10-15 03:07:29,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1487 transitions. [2019-10-15 03:07:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 03:07:29,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:29,144 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:29,145 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:29,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:29,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1247424113, now seen corresponding path program 1 times [2019-10-15 03:07:29,145 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:29,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714945932] [2019-10-15 03:07:29,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:29,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:29,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:29,648 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 03:07:29,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714945932] [2019-10-15 03:07:29,649 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:29,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:29,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199239499] [2019-10-15 03:07:29,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:29,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:29,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:29,652 INFO L87 Difference]: Start difference. First operand 973 states and 1487 transitions. Second operand 8 states. [2019-10-15 03:07:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:36,304 INFO L93 Difference]: Finished difference Result 2075 states and 3194 transitions. [2019-10-15 03:07:36,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:36,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2019-10-15 03:07:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:36,318 INFO L225 Difference]: With dead ends: 2075 [2019-10-15 03:07:36,318 INFO L226 Difference]: Without dead ends: 1407 [2019-10-15 03:07:36,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2019-10-15 03:07:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1357. [2019-10-15 03:07:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2019-10-15 03:07:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2037 transitions. [2019-10-15 03:07:36,412 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2037 transitions. Word has length 138 [2019-10-15 03:07:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:36,412 INFO L462 AbstractCegarLoop]: Abstraction has 1357 states and 2037 transitions. [2019-10-15 03:07:36,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2037 transitions. [2019-10-15 03:07:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 03:07:36,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:36,416 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:36,417 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1987904052, now seen corresponding path program 1 times [2019-10-15 03:07:36,418 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:36,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278225058] [2019-10-15 03:07:36,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:36,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:36,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:36,725 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 03:07:36,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278225058] [2019-10-15 03:07:36,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:36,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:07:36,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801751615] [2019-10-15 03:07:36,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:07:36,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:07:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:07:36,728 INFO L87 Difference]: Start difference. First operand 1357 states and 2037 transitions. Second operand 6 states. [2019-10-15 03:07:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:42,031 INFO L93 Difference]: Finished difference Result 5384 states and 8416 transitions. [2019-10-15 03:07:42,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:07:42,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-15 03:07:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:42,071 INFO L225 Difference]: With dead ends: 5384 [2019-10-15 03:07:42,071 INFO L226 Difference]: Without dead ends: 4081 [2019-10-15 03:07:42,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2019-10-15 03:07:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3796. [2019-10-15 03:07:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3796 states. [2019-10-15 03:07:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 5842 transitions. [2019-10-15 03:07:42,338 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 5842 transitions. Word has length 142 [2019-10-15 03:07:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:42,339 INFO L462 AbstractCegarLoop]: Abstraction has 3796 states and 5842 transitions. [2019-10-15 03:07:42,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:07:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 5842 transitions. [2019-10-15 03:07:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 03:07:42,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:42,343 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:42,343 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1850121621, now seen corresponding path program 1 times [2019-10-15 03:07:42,344 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:42,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576738814] [2019-10-15 03:07:42,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:42,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:42,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:42,593 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 03:07:42,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576738814] [2019-10-15 03:07:42,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:42,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:42,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502969951] [2019-10-15 03:07:42,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:42,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:42,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:42,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:42,595 INFO L87 Difference]: Start difference. First operand 3796 states and 5842 transitions. Second operand 7 states.